config:
    dataroot: /home/mrshannon/Scratch/rads/tracks
    config_files:
        /home/mrshannon/Scratch/rads/tracks/conf/rads.xml
        /home/mrshannon/.config/pyrads/settings.xml
    satellite:
        id: 2a
        id3: h2a
        name: HY-2A
        names: hy-2a hy2a
        dt1hz: 1.0
        inclination: 99.34
        frequency: 13.58 5.25
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 116 to 120
            repeat:
                days: 14.0
                passes: 386
            reference_pass:
                time: 2016-03-01 21:00:11 UTC
                longitude: -41.18
                cycle_number: 116
                pass_number: 105
            start_time: 2013-01-01 00:00:00 UTC
        aliases:
            alt: alt_gdrd
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb1: tb_187
            tb2: tb_238
            tb3: tb_370
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 900000.0
        variable:
            id: alt_gdrd
            name: CNES GDR-D orbital altitude
            data: alt_gdrd
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-D standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 900000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 950000.0 to 1050000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 900000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got00
            name: GOT00.2 ocean tide
            data: tide_ocean_got00
            units: m
            source: GOT00.2
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_got00
            name: GOT00.2 load tide
            data: tide_load_got00
            units: m
            source: GOT00.2
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: CLS non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_c
            name: CLS non-parametric sea state bias (C-band)
            data: ssb_cls_c
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: This sea state bias correction is added to C-band range when determining ionospheric correction.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_rad
            name: radiometer wind speed
            data: wind_speed_rad
            units: m/s
            standard_name: wind_speed
            source: radiometer
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_c
            name: std dev of C-band range
            data: range_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: range_numval_c
            name: number of valid C-band measurements
            data: range_numval_c
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_187
            name: radiometer brightness temperature (18.7 GHz)
            data: tb_187
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_370
            name: radiometer brightness temperature (37.0 GHz)
            data: tb_370
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: alt_side_B attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_tb2_bad tb2_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Ku-band range bias
            data: drange_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_c
            name: net instrument correction to C-band range
            data: drange_c
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: off_nadir_angle2_pf SQRT
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: off_nadir_angle2_pf
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dswh_ku
            name: net instrument correction to Ku-band significant wave height
            data: dswh_ku
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: dswh_c
            name: net instrument correction to C-band significant wave height
            data: dswh_c
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: dsig0_ku
            name: Ku-band backscatter coefficient bias
            data: dsig0_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: dsig0_c
            name: C-band backscatter coefficient bias
            data: dsig0_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: 3a
        id3: s3a
        name: SNTNL-3A
        names: sentinel3a sntnl-3a sentinel-3a
        dt1hz: 1.0
        inclination: 98.65
        frequency: 13.575 5.41
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 0 to 99
            repeat:
                days: 27.0
                passes: 770
            reference_pass:
                time: 2016-06-28 21:57:26 UTC
                longitude: 0.627
                cycle_number: 6
                pass_number: 1
                absolute_orbit_number: 1899
            start_time: 2016-03-01 00:00:00 UTC
        aliases:
            alt: alt_gdrf alt_gdre
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            wet_tropo_plrm: wet_tropo_rad_plrm wet_tropo_rad
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_238
            tb3: tb_365
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms sig0_rms
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: sla_plrm
            name: sea level anomaly (PLRM)
            data: alt range_ku_plrm SUB dry_tropo SUB wet_tropo_plrm SUB iono_alt_plrm SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb_cls_plrm SUB mss SUB ref_frame_offset_plrm SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - PLRM range - all (PLRM) altimetric corrections
            limits: -3 to 3
            plot_range: -0.3 to 0.5
            quality_flag: swh_ku_plrm sig0_ku_plrm range_rms_ku_plrm range_numval_ku_plrm flags swh_rms_ku_plrm sig0_rms_ku_plrm attitude
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha_plrm
            name: sea surface height anomaly (PLRM)
            data: ssha_plrm
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - PLRM range - all (PLRM) altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla_plrm variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_gdrf
            name: CNES GDR-F orbital altitude
            data: alt_gdrf
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-F standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_ku_plrm
            name: Ku-band range corrected for instr. effects (PLRM)
            data: range_ku_plrm
            units: m
            standard_name: altimeter_range
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad_plrm
            name: radiometer wet tropospheric correction (PLRM)
            data: wet_tropo_rad_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad_sst_gam
            name: radiometer wet tropospheric correction (using 5-parameter algorithm)
            data: wet_tropo_rad_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_comp
            name: composite wet tropospheric correction
            data: wet_tropo_comp
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer and external model and radiometer data
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_plrm
            name: dual-frequency ionospheric correction (PLRM)
            data: iono_alt_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth_plrm
            name: smoothed dual-frequency ionospheric correction (PLRM)
            data: iono_alt_smooth_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: Tran et al. 2012 non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al., 2012
            comment: A sea state bias correction must be added to range to correct for sea state delays. This model is actually based on Jason-2 data and not Sentinel-3, and will be replaced later.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_c
            name: Tran et al. 2012 non-parametric sea state bias (C-band)
            data: ssb_cls_c
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al., 2012
            comment: This sea state bias correction is added to C-band range when determining ionospheric correction.. This model is actually based on Jason-2 data and not Sentinel-3, and will be replaced later.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_plrm
            name: Tran et al. 2012 non-parametric sea state bias (PLRM)
            data: ssb_cls_plrm
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al. 2012
            comment: A sea state bias correction must be added to range to correct for sea state delays. This model is actually based on Jason-2 data and not Sentinel-3, and will be replaced later.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm96
            name: EGM96 geoid height
            data: geoid_egm96
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM96
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ku_plrm
            name: Ku-band significant wave height (PLRM)
            data: swh_ku_plrm
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku_plrm
            name: Ku-band backscatter coefficient (PLRM)
            data: sig0_ku_plrm
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt_plrm
            name: altimeter wind speed (PLRM)
            data: wind_speed_alt_plrm
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_c
            name: std dev of C-band range
            data: range_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku_plrm
            name: std dev of Ku-band range (PLRM)
            data: range_rms_ku_plrm
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 21.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: range_numval_ku_plrm
            name: number of valid Ku-band measurements (PLRM)
            data: range_numval_ku_plrm
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: range_numval_c
            name: number of valid C-band measurements
            data: range_numval_c
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_365
            name: radiometer brightness temperature (36.5 GHz)
            data: tb_365
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 140 to 200
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: LRM SAR
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_238 bad_tb_365
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: sar_mode attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65448 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: flags_plrm
            name: flag word (PLRM)
            data: flags_plrm
            units: no_unit
            flag_masks: hardware_bad attitude_bad flag_rad_oper_mode alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_bad tb2_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku_plrm
            name: std dev of Ku-band significant wave height (PLRM)
            data: swh_rms_ku_plrm
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku_plrm
            name: std dev of Ku-band backscatter coefficient (PLRM)
            data: sig0_rms_ku_plrm
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: attitude_pitch attitude_roll HYPOT
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: attitude_pitch attitude_roll R2
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle2_wf_rms_ku
            name: std dev of off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_rms_ku
            units: degrees^2
            plot_range: 0.0 to 0.04
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_pitch
            name: platform pitch angle
            data: attitude_pitch
            units: degrees
            plot_range: -0.16 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_roll
            name: platform roll angle
            data: attitude_roll
            units: degrees
            plot_range: -0.16 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_yaw
            name: platform yaw angle
            data: attitude_yaw
            units: degrees
            plot_range: -0.12 to 0.12
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: ref_frame_offset_plrm
            name: reference frame offset (PLRM)
            data: ref_frame_offset_plrm
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: orbit_type
            name: type of orbit solution used
            data: orbit_type
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            comment: Indication about which orbit solution was used for alt_gdre
            flag_values: osf fos navatt doris_nav gnss_roe pod_moe salp_moe pod_poe salp_poe
            plot_range: 0 to 8
            format: 1x
            compress:
                type: int8
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: 3b
        id3: s3b
        name: SNTNL-3B
        names: sntnl-3b sentinel3b sentinel-3b
        dt1hz: 1.0
        inclination: 98.65
        frequency: 13.575 5.41
        phase:
            id: 1
            mission: Initial Drift Phase
            cycles: 3 to 5
            repeat:
                days: 30.9996
                passes: 882
            reference_pass:
                time: 2018-05-08 12:22:29 UTC
                longitude: 144.35
                cycle_number: 3
                pass_number: 75
                absolute_orbit_number: 182
            start_time: 2018-05-08 00:00:00 UTC
        phase:
            id: 1
            mission: Initial Drift Phase
            cycles: 6 to 8
            repeat:
                days: 31.0
                passes: 884
            reference_pass:
                time: 2018-05-30 13:57:33 UTC
                longitude: 120.51
                cycle_number: 7
                pass_number: 847
                absolute_orbit_number: 496
            start_time: 2018-05-29 04:02:29 UTC
        phase:
            id: a
            mission: Tandem Phase
            cycles: 9 to 14
            repeat:
                days: 27.0
                passes: 770
            reference_pass:
                time: 2018-05-31 21:57:35 UTC
                longitude: 0.627
                cycle_number: 9
                pass_number: 1
                absolute_orbit_number: 515
            start_time: 2018-06-06 02:14:50 UTC
        phase:
            id: 2
            mission: Drift Phase
            cycles: 15 to 15
            repeat:
                days: 80.0
                passes: 2282
                longitude_drift: 0.0933
            reference_pass:
                time: 2018-10-16 10:32:35 UTC
                longitude: 171.742
                cycle_number: 15
                pass_number: 73
                absolute_orbit_number: 2476
            start_time: 2018-10-16 10:07:20 UTC
        phase:
            id: 2
            mission: Drift Phase
            cycles: 16 to 16
            repeat:
                days: 400.0
                passes: 11418
                longitude_drift: 1.0833
            reference_pass:
                time: 2018-10-24 10:22:27 UTC
                longitude: 174.266
                cycle_number: 16
                pass_number: 301
                absolute_orbit_number: 2590
            start_time: 2018-10-24 09:57:30 UTC
        phase:
            id: 2
            mission: Drift Phase
            cycles: 17 to 17
            repeat:
                days: 400.0
                passes: 11418
                longitude_drift: 1.0833
            reference_pass:
                time: 2018-11-09 21:32:40 UTC
                longitude: 6.783
                cycle_number: 17
                pass_number: 1
                absolute_orbit_number: 2825
            start_time: 2018-11-09 21:07:40 UTC
        phase:
            id: 2
            mission: Drift Phase
            cycles: 18 to 18
            repeat:
                days: 242.0
                passes: 6902
                longitude_drift: 0.2017
            reference_pass:
                time: 2018-11-20 14:49:28 UTC
                longitude: 107.613
                cycle_number: 18
                pass_number: 21
                absolute_orbit_number: 2978
            start_time: 2018-11-20 14:24:40 UTC
        phase:
            id: b
            mission: Exact Repeat Mission
            cycles: 19 to 99
            repeat:
                days: 27.0
                passes: 770
            reference_pass:
                time: 2018-11-23 10:08:38 UTC
                longitude: 177.82
                cycle_number: 19
                pass_number: 101
                absolute_orbit_number: 3018
            start_time: 2018-11-23 09:46:00 UTC
        aliases:
            alt: alt_gdrf alt_gdre
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            wet_tropo_plrm: wet_tropo_rad_plrm wet_tropo_rad
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_238
            tb3: tb_365
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms sig0_rms
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: sla_plrm
            name: sea level anomaly (PLRM)
            data: alt range_ku_plrm SUB dry_tropo SUB wet_tropo_plrm SUB iono_alt_plrm SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb_cls_plrm SUB mss SUB ref_frame_offset_plrm SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - PLRM range - all (PLRM) altimetric corrections
            limits: -3 to 3
            plot_range: -0.8 to 0.0
            quality_flag: swh_ku_plrm sig0_ku_plrm range_rms_ku_plrm range_numval_ku_plrm flags swh_rms_ku_plrm sig0_rms_ku_plrm attitude
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha_plrm
            name: sea surface height anomaly (PLRM)
            data: ssha_plrm
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - PLRM range - all (PLRM) altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla_plrm variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_gdrf
            name: CNES GDR-F orbital altitude
            data: alt_gdrf
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-F standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_ku_plrm
            name: Ku-band range corrected for instr. effects (PLRM)
            data: range_ku_plrm
            units: m
            standard_name: altimeter_range
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad_plrm
            name: radiometer wet tropospheric correction (PLRM)
            data: wet_tropo_rad_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad_sst_gam
            name: radiometer wet tropospheric correction (using 5-parameter algorithm)
            data: wet_tropo_rad_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_comp
            name: composite wet tropospheric correction
            data: wet_tropo_comp
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer and external model and radiometer data
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_plrm
            name: dual-frequency ionospheric correction (PLRM)
            data: iono_alt_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth_plrm
            name: smoothed dual-frequency ionospheric correction (PLRM)
            data: iono_alt_smooth_plrm
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: Tran et al. 2012 non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al., 2012
            comment: A sea state bias correction must be added to range to correct for sea state delays. This model is actually based on Jason-2 data and not Sentinel-3, and will be replaced later.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_c
            name: Tran et al. 2012 non-parametric sea state bias (C-band)
            data: ssb_cls_c
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al., 2012
            comment: This sea state bias correction is added to C-band range when determining ionospheric correction.. This model is actually based on Jason-2 data and not Sentinel-3, and will be replaced later.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_plrm
            name: Tran et al. 2012 non-parametric sea state bias (PLRM)
            data: ssb_cls_plrm
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al. 2012
            comment: A sea state bias correction must be added to range to correct for sea state delays. This model is actually based on Jason-2 data and not Sentinel-3, and will be replaced later.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm96
            name: EGM96 geoid height
            data: geoid_egm96
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM96
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ku_plrm
            name: Ku-band significant wave height (PLRM)
            data: swh_ku_plrm
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku_plrm
            name: Ku-band backscatter coefficient (PLRM)
            data: sig0_ku_plrm
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt_plrm
            name: altimeter wind speed (PLRM)
            data: wind_speed_alt_plrm
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_c
            name: std dev of C-band range
            data: range_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku_plrm
            name: std dev of Ku-band range (PLRM)
            data: range_rms_ku_plrm
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 21.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: range_numval_ku_plrm
            name: number of valid Ku-band measurements (PLRM)
            data: range_numval_ku_plrm
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: range_numval_c
            name: number of valid C-band measurements
            data: range_numval_c
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_365
            name: radiometer brightness temperature (36.5 GHz)
            data: tb_365
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 140 to 200
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: LRM SAR
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_238 bad_tb_365
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: sar_mode attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65448 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: flags_plrm
            name: flag word (PLRM)
            data: flags_plrm
            units: no_unit
            flag_masks: hardware_bad attitude_bad flag_rad_oper_mode alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_bad tb2_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku_plrm
            name: std dev of Ku-band significant wave height (PLRM)
            data: swh_rms_ku_plrm
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku_plrm
            name: std dev of Ku-band backscatter coefficient (PLRM)
            data: sig0_rms_ku_plrm
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: attitude_pitch attitude_roll HYPOT
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: attitude_pitch attitude_roll R2
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle2_wf_rms_ku
            name: std dev of off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_rms_ku
            units: degrees^2
            plot_range: 0.0 to 0.04
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_pitch
            name: platform pitch angle
            data: attitude_pitch
            units: degrees
            plot_range: -0.16 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_roll
            name: platform roll angle
            data: attitude_roll
            units: degrees
            plot_range: -0.16 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_yaw
            name: platform yaw angle
            data: attitude_yaw
            units: degrees
            plot_range: -0.12 to 0.12
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: ref_frame_offset_plrm
            name: reference frame offset (PLRM)
            data: ref_frame_offset_plrm
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: orbit_type
            name: type of orbit solution used
            data: orbit_type
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            comment: Indication about which orbit solution was used for alt_gdre
            flag_values: osf fos navatt doris_nav gnss_roe pod_moe salp_moe pod_poe salp_poe
            plot_range: 0 to 8
            format: 1x
            compress:
                type: int8
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: c2
        id3: cs2
        name: CRYOSAT2
        names: cryosat-2 cryosat2
        dt1hz: 0.980469
        inclination: 92.0
        frequency: 13.575
        phase:
            id: a
            mission: Multi-disciplinary Phase
            cycles: 4 to 199
            repeat:
                days: 368.239641
                passes: 10688
            reference_pass:
                time: 2011-04-12 11:40:14 UTC
                longitude: 0.731073
                cycle_number: 2
                pass_number: 1
            start_time: 2010-07-14 00:00:00 UTC
            subcycles:
                lengths: 840 840 782 840 840 782 840 840 782 840 840 782 840
        aliases:
            alt: alt_gdre alt_cnes
            alt_20hz: alt_cnes_20hz
            range: range_ku
            range_20hz: range_20hz_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_ecmwf
            iono: iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_hyb
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            peakiness: peakiness_ku
            drange: drange_ku
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags peakiness
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: sla_20hz
            name: 20-Hz sea level anomaly
            data: alt_20hz range_20hz SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite 20-Hz altitude - 20-Hz range - all altimetric corrections
            limits: -3 to 3
            quality_flag: swh sig0 range_rms range_numval flags peakiness
            dimensions: 2
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha_20hz
            name: 20-Hz sea surface height anomaly
            data: ssha_20hz
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite 20-Hz altitude - 20-Hz range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla_20hz variable.
            limits: -3 to 3
            dimensions: 2
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: time_20hz
            name: 20-Hz time
            data: time_20hz
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of 20-Hz measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            dimensions: 2
            format: 17.6f
        variable:
            id: meas_ind
            name: elementary measurement index
            data: meas_ind
            units: 1
            standard_name: dimension
            comment: Added to be CF-compliant
            dimensions: 2
            compress:
                type: int8
        variable:
            id: wvf_ind
            name: waveform index
            data: wnf_ind
            units: 1
            standard_name: dimension
            comment: Added to be CF-compliant
            dimensions: 3
            compress:
                type: int16
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-07
        variable:
            id: lat_20hz
            name: 20-Hz latitude
            data: lat_20hz
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            dimensions: 2
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-07
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-07
        variable:
            id: lon_20hz
            name: 20-Hz longitude
            data: lon_20hz
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: -180 to 180
            dimensions: 2
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-07
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_eig6c
            name: ESOC EIGEN-6C orbital altitude
            data: alt_eig6c
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESOC, EIGEN-6C
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrd
            name: CNES GDR-D orbital altitude
            data: alt_gdrd
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-D standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_gdrf
            name: CNES GDR-F orbital altitude
            data: alt_gdrf
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-F standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_cnes_20hz
            name: 20-Hz CNES orbital altitude
            data: alt_cnes_20hz
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            dimensions: 2
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -40 to 40
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.002
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 700000.0 to 800000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_20hz_ku
            name: 20-Hz Ku-band range corrected for instr. effects
            data: range_20hz_ku
            units: m
            standard_name: altimeter_range
            limits: 700000.0 to 800000.0
            dimensions: 2
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_tracker_20hz_ku
            name: 20-Hz Ku-band tracker range corrected for instr. effects
            data: range_tracker_20hz_ku
            units: m
            standard_name: altimeter_range
            comment: Position of the range window according to on-board tracker, corrected for internal delays and variations of USO
            limits: 700000.0 to 800000.0
            dimensions: 2
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_used_20hz_ku
            name: 20-Hz flag for utilization in the computation of 1-Hz Ku-band range
            data: range_used_20hz_ku
            units: no_unit
            standard_name: altimeter_range status_flag
            comment: Map of valid points used to compute the 1-Hz Ku-band altimeter range, SWH, and sigma0
            flag_values: yes no
            dimensions: 2
            format: 11.3f
            compress:
                type: int8
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_bent
            name: Bent ionospheric correction
            data: iono_bent
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: Bent climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got00
            name: GOT00.2 ocean tide
            data: tide_ocean_got00
            units: m
            source: GOT00.2
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_got00
            name: GOT00.2 load tide
            data: tide_load_got00
            units: m
            source: GOT00.2
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM3 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_hyb
            name: hybrid sea state bias
            data: ssb_hyb
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: NOAA/EUMETSAT hybrid model
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_ucl04
            name: UCL04 mean sea surface height
            data: mss_ucl04
            units: m
            source: UCL
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: -0.5 to 8.0
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: swh_20hz_ku
            name: 20-Hz Ku-band significant wave height
            data: swh_20hz_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: -0.5 to 8.0
            dimensions: 2
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: agc_ku
            name: Ku-band automatic gain control
            data: agc_ku
            units: no_unit
            comment: AGC setting corrected for individual biases, but not for drift
            limits: 0 to 70
            plot_range: 20 to 35
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: agc_20hz_ku
            name: 20-Hz Ku-band automatic gain control
            data: agc_20hz_ku
            units: no_unit
            comment: AGC setting corrected for individual biases, but not for drift
            limits: 0 to 70
            dimensions: 2
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_20hz_ku
            name: 20-Hz Ku-band backscatter coefficient
            data: sig0_20hz_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            dimensions: 2
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.18
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: peakiness_ku
            name: Ku-band peakiness
            data: peakiness_ku
            units: 1
            limits: 1.1 to 1.6
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: peakiness_20hz_ku
            name: 20-Hz Ku-band peakiness
            data: peakiness_20hz_ku
            units: 1
            limits: 1.1 to 1.6
            dimensions: 2
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: LRM SAR
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: sar_mode not_used continental_ice not_used alt_land alt_non_ocean not_used not_used not_used not_used not_used range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 32 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Ku-band retracker range (relative to window delay)
            data: drange_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_cal
            name: internal calibration correction to range
            data: drange_cal
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_fm
            name: Doppler correction to range
            data: drange_fm
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: attitude_pitch attitude_roll HYPOT
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: attitude_pitch attitude_roll R2
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle2_wf_rms_ku
            name: std dev of off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_rms_ku
            units: degrees^2
            plot_range: 0.0 to 0.04
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_pitch
            name: platform pitch angle
            data: attitude_pitch
            units: degrees
            plot_range: -0.16 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_pitch_20hz
            name: 20-Hz platform pitch angle
            data: attitude_pitch_20hz
            units: degrees
            dimensions: 2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_roll
            name: platform roll angle
            data: attitude_roll
            units: degrees
            plot_range: -0.16 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_roll_20hz
            name: 20-Hz platform roll angle
            data: attitude_roll_20hz
            units: degrees
            dimensions: 2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_yaw
            name: platform yaw angle
            data: attitude_yaw
            units: degrees
            plot_range: -0.12 to 0.12
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: attitude_yaw_20hz
            name: 20-Hz platform yaw angle
            data: attitude_yaw_20hz
            units: degrees
            dimensions: 2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_swh_att
            name: backscatter coefficient correction due to SWH/attitude
            data: dsig0_swh_att
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: dsig0_range
            name: backscatter coefficient correction due to range
            data: dsig0_range
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: dsig0_temp
            name: backscatter coefficient correction due to temperature
            data: dsig0_temp
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_gfs
            name: NOAA/GFS liquid water content
            data: liquid_water_gfs
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            source: NOAA Global Forecast System
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_content_gfs
            name: NOAA/GFS water vapor content
            data: water_vapor_content_gfs
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            source: NOAA Global Forecast System
            plot_range: 0 to 70
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: flags_retrack
            name: retracking flags
            data: flags_retrack
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: mqe
            name: mean quadratic error of waveform fit
            data: mqe
            units: no_unit
            plot_range: 0.1 to 0.7
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: mqe_20hz_ku
            name: 20-Hz mean quadratic error of Ku-band waveform fit
            data: mqe_20hz_ku
            units: no_unit
            dimensions: 2
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: nr_iter
            name: number of iterations of retracking
            data: nr_iter
            units: no_unit
            plot_range: 0 to 25
            format: 3.0f
            compress:
                type: int8
        variable:
            id: noise_floor_ku
            name: Ku-band noise floor of waveforms
            data: noise_floor_ku
            units: no_unit
            plot_range: -40 to -20
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
                add_offset: -20.0
        variable:
            id: noise_floor_rms_ku
            name: std dev of Ku-band noise floor of waveforms
            data: noise_floor_rms_ku
            units: no_unit
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: noise_floor_20hz_ku
            name: 20-Hz Ku-band noise floor of waveforms
            data: noise_floor_20hz_ku
            units: no_unit
            dimensions: 2
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
                add_offset: -20.0
        variable:
            id: flags_star_tracker
            name: star tracker flags
            data: flags_star_tracker
            units: no_unit
            flag_masks: str1_on str2_on str3_on
            plot_range: 0 to 8
            format: 1x
            compress:
                type: int8
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: waveform_20hz
            name: waveform data
            data: waveform_20hz
            units: no_unit
            dimensions: 3
            format: 6.0f
            compress:
                type: int16
                add_offset: 32768.0
        variable:
            id: waveform_scale_20hz
            name: waveform scale factor
            data: waveform_scale_20hz
            units: no_unit
            comment: scale factor (received/transmitted) power, converted to dB, including instrumental effects
            dimensions: 2
            format: 8.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: e1
        id3: er1
        name: ERS-1
        names: ers1 ers-1
        dt1hz: 0.980469
        inclination: 98.54
        frequency: 13.8
        phase:
            id: a
            mission: Calibration Phase
            cycles: 1 to 46
            repeat:
                days: 3.0
                passes: 86
            reference_pass:
                time: 1991-08-01 21:59:30 UTC
                longitude: 7.62
                cycle_number: 2
                pass_number: 1
            start_time: 1991-08-01 00:00:00 UTC
        phase:
            id: b
            mission: Ice Phase 1
            cycles: 47 to 82
            repeat:
                days: 3.0
                passes: 86
            reference_pass:
                time: 1991-12-23 22:06:50 UTC
                longitude: 5.75
                cycle_number: 50
                pass_number: 1
            start_time: 1991-12-14 21:40:00 UTC
        phase:
            id: c
            mission: Multi-disciplinary Phase 1
            cycles: 83 to 101
            repeat:
                days: 35.0
                passes: 1002
            reference_pass:
                time: 1992-05-01 22:29:30 UTC
                longitude: 0.13
                cycle_number: 84
                pass_number: 1
            start_time: 1992-04-14 00:00:00 UTC
        phase:
            id: d
            mission: Ice phase 2
            cycles: 102 to 138
            repeat:
                days: 3.0
                passes: 86
            reference_pass:
                time: 1993-12-24 22:06:50 UTC
                longitude: 5.75
                cycle_number: 103
                pass_number: 1
            start_time: 1993-12-24 00:00:00 UTC
        phase:
            id: e
            mission: Geodetic Phase 1
            cycles: 139 to 140
            repeat:
                days: 168.0
                passes: 4822
            reference_pass:
                time: 1994-05-23 22:29:50 UTC
                longitude: 0.02
                cycle_number: 140
                pass_number: 1
            start_time: 1994-04-10 18:00:00 UTC
        phase:
            id: f
            mission: Geodetic Phase 2
            cycles: 141 to 143
            repeat:
                days: 168.0
                passes: 4822
            reference_pass:
                time: 1994-10-01 22:29:40 UTC
                longitude: 0.1
                cycle_number: 142
                pass_number: 1
            start_time: 1994-09-28 02:00:00 UTC
        phase:
            id: g
            mission: Multi-disciplinary Phase 2
            cycles: 144 to 156
            repeat:
                days: 35.0
                passes: 1002
            reference_pass:
                time: 1995-04-09 22:29:40 UTC
                longitude: 0.13
                cycle_number: 145
                pass_number: 1
            start_time: 1995-03-24 00:00:00 UTC
            end_time: 1996-06-03 00:00:00 UTC
        aliases:
            alt: alt_reaper alt_gfz
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_bm3
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_238
            tb3: tb_365
            peakiness: peakiness_ku
            drange: drange_ku
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0: dsig0_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_dgme04
            name: DGM-E04 orbital altitude
            data: alt_dgme04
            units: m
            standard_name: height_above_reference_ellipsoid
            source: DEOS, DGM-E04
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gfz
            name: GFZ orbital altitude
            data: alt_gfz
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GFZ/D-PAF
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_reaper
            name: REAPER/COMBI orbital altitude
            data: alt_reaper
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, combined solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_reaper_deos
            name: REAPER/DEOS orbital altitude
            data: alt_reaper_deos
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, DEOS solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_reaper_gfz
            name: REAPER/GFZ orbital altitude
            data: alt_reaper_gfz
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, GFZ solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_reaper_esoc
            name: REAPER/ESOC orbital altitude
            data: alt_reaper_esoc
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, ESOC solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_bent
            name: Bent ionospheric correction
            data: iono_bent
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: Bent climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9555 MUL 0.0028 ADD
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM3 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_ucl04
            name: UCL04 mean sea surface height
            data: mss_ucl04
            units: m
            source: UCL
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_365
            name: radiometer brightness temperature (36.5 GHz)
            data: tb_365
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 140 to 200
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: peakiness_ku
            name: Ku-band peakiness
            data: peakiness_ku
            units: 1
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: sptr_available sptr_not_available
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sptr
            name: SPTR availability
            data: bit 0
            units: no_unit
            flag_values: yes no
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_238 bad_tb_365
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_alt_track_mode
            name: altimeter tracking mode
            data: bit 14
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ocean_mode ice_mode
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: sptr_availability not_used not_used not_used alt_land alt_non_ocean rad_land not_used rad_rain_or_ice tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Ku-band range bias
            data: drange_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_cal
            name: internal calibration correction to range
            data: drange_cal
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_uso
            name: USO correction to Ku-band range
            data: drange_uso
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_fm
            name: Doppler correction to range
            data: drange_fm
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_sptr
            name: SPTR correction to range
            data: drange_sptr
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_ku
            name: Ku-band backscatter coefficient bias
            data: dsig0_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: mqe
            name: mean quadratic error of waveform fit
            data: mqe
            units: no_unit
            plot_range: 0.1 to 0.7
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: seaice_class
            name: sea ice classification
            data: seaice_class
            units: no_unit
            standard_name: sea_ice_classification
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: e2
        id3: er2
        name: ERS-2
        names: ers-2 ers2
        dt1hz: 0.980469
        inclination: 98.54
        frequency: 13.8
        phase:
            id: a
            mission: Multi-disciplinary Phase
            cycles: 0 to 169
            repeat:
                days: 35.0
                passes: 1002
            reference_pass:
                time: 1995-05-15 22:29:30 UTC
                longitude: 0.13
                cycle_number: 1
                pass_number: 1
            start_time: 1995-04-29 00:00:00 UTC
            end_time: 2011-07-05 00:00:00 UTC
        aliases:
            alt: alt_reaper alt_gfz
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_bm3
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_238
            tb3: tb_365
            peakiness: peakiness_ku
            drange: drange_ku
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0: dsig0_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms attitude
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_dgme04
            name: DGM-E04 orbital altitude
            data: alt_dgme04
            units: m
            standard_name: height_above_reference_ellipsoid
            source: DEOS, DGM-E04
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gfz
            name: GFZ orbital altitude
            data: alt_gfz
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GFZ/D-PAF
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_reaper
            name: REAPER/COMBI orbital altitude
            data: alt_reaper
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, combined solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_reaper_deos
            name: REAPER/DEOS orbital altitude
            data: alt_reaper_deos
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, DEOS solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_reaper_gfz
            name: REAPER/GFZ orbital altitude
            data: alt_reaper_gfz
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, GFZ solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_reaper_esoc
            name: REAPER/ESOC orbital altitude
            data: alt_reaper_esoc
            units: m
            standard_name: height_above_reference_ellipsoid
            source: REAPER project, ESOC solution
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_bent
            name: Bent ionospheric correction
            data: iono_bent
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: Bent climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9555 MUL 0.0028 ADD
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM3 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_ucl04
            name: UCL04 mean sea surface height
            data: mss_ucl04
            units: m
            source: UCL
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_365
            name: radiometer brightness temperature (36.5 GHz)
            data: tb_365
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 140 to 200
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: peakiness_ku
            name: Ku-band peakiness
            data: peakiness_ku
            units: 1
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: qual_sptr
            name: SPTR availability
            data: bit 0
            units: no_unit
            flag_values: yes no
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_238 bad_tb_365
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_alt_track_mode
            name: altimeter tracking mode
            data: bit 14
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ocean_mode ice_mode
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: not_used attitude_bad not_used not_used alt_land alt_non_ocean rad_land not_used rad_rain_or_ice tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Ku-band range bias
            data: drange_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_cal
            name: internal calibration correction to range
            data: drange_cal
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_uso
            name: USO correction to Ku-band range
            data: drange_uso
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_fm
            name: Doppler correction to range
            data: drange_fm
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_sptr
            name: SPTR correction to range
            data: drange_sptr
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir angle squared from waveform (smoothed)
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            limits: -0.05 to 0.05
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_ku
            name: Ku-band backscatter coefficient bias
            data: dsig0_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: mqe
            name: mean quadratic error of waveform fit
            data: mqe
            units: no_unit
            plot_range: 0.1 to 0.7
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: seaice_class
            name: sea ice classification
            data: seaice_class
            units: no_unit
            standard_name: sea_ice_classification
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: g1
        id3: gfo
        name: GFO-1
        names: gfo1 gfo-1
        dt1hz: 0.979922
        inclination: 108.05
        frequency: 13.495
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 37 to 223
            repeat:
                days: 17.05057808
                passes: 488
            reference_pass:
                time: 2000-01-07 17:53:30 UTC
                longitude: 1.0
                cycle_number: 37
                pass_number: 1
            start_time: 2000-01-07 00:00:00 UTC
            end_time: 2008-09-18 00:00:00 UTC
        aliases:
            alt: alt_pgs7777
            range: range_ku
            dry_tropo: dry_tropo_era
            wet_tropo: wet_tropo_rad wet_tropo_era
            iono: iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_hyb
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_222
            tb3: tb_370
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_pgs7777
            name: PGS7777 orbital altitude
            data: alt_pgs7777
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC, PGS7777
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.974 MUL 0.0022 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM3 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_hyb
            name: hybrid sea state bias
            data: ssb_hyb
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: NOAA/EUMETSAT hybrid model
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.25
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 8.5 to 10.5
            plot_range: 0 to 11
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_222
            name: radiometer brightness temperature (22.2 GHz)
            data: tb_222
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_370
            name: radiometer brightness temperature (37.0 GHz)
            data: tb_370
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_220 bad_tb_370
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: not_used attitude_bad not_used not_used alt_land alt_non_ocean rad_land alt_rain_or_ice not_used tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65384 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: gs
        id3: geo
        name: GEOSAT
        names: geosat
        dt1hz: 0.979922
        inclination: 108.05
        frequency: 13.5
        phase:
            id: a
            mission: Geodetic Mission
            cycles: 1 to 25
            repeat:
                days: 23.06888431
                passes: 660
                longitude_drift: -0.206
            reference_pass:
                time: 1985-04-13 07:22:04 UTC
                longitude: 0.25
                cycle_number: 2
                pass_number: 1
            start_time: 1985-03-31 00:00:00 UTC
        phase:
            id: b
            mission: Exact Repeat Mission
            cycles: 26 to 93
            repeat:
                days: 17.05057808
                passes: 488
            reference_pass:
                time: 1986-11-17 00:42:22 UTC
                longitude: 1.0
                cycle_number: 27
                pass_number: 1
            start_time: 1986-11-08 00:00:00 UTC
            end_time: 1989-12-31 00:00:00 UTC
        aliases:
            alt: alt_gdrcp
            range: range_ku
            dry_tropo: dry_tropo_era
            wet_tropo: wet_tropo_era
            iono: iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_hyb
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            drange: drange_ku
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_jgm3
            name: JGM-3 orbital altitude
            data: alt_jgm3
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC, JGM-3
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -60 to 60
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.002
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_corrected
            name: corrected altimeter range
            data: range_corrected
            units: m
            standard_name: altimeter_range
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_nvap
            name: NVAP wet tropospheric correction
            data: wet_tropo_nvap
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NVAP
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_tovs_ssmi
            name: TOVS/SSMI wet tropospheric correction
            data: wet_tropo_tovs_ssmi
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: TOVS and SSMI
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_tovs_ncep
            name: TOVS/NCEP wet tropospheric correction
            data: wet_tropo_tovs_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: TOVS and NOAA/NCEP
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.974 MUL 0.0022 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM3 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_hyb
            name: hybrid sea state bias
            data: ssb_hyb
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: NOAA/EUMETSAT hybrid model
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_sdr
            name: Ku-band backscatter coefficient (SDR)
            data: sig0_sdr
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.25
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 8.5 to 10.5
            plot_range: 0 to 11
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_dh
            name: quality dH
            data: bit 2
            units: no_unit
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok some_10Hz_measurements_invalid
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of sea state bias
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of wind speed estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_alt_track_mode
            name: altimeter tracking mode
            data: bit 14
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: nominal coarse_or_acquisition
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: not_used attitude_bad range_suspect not_used alt_land alt_non_ocean not_used not_used not_used not_used not_used range_suspect ssb_suspect wind_speed_suspect tracking_acquisition orbit_degraded
            limits: 51176 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Ku-band range bias
            data: drange_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_cal
            name: internal calibration correction to range
            data: drange_cal
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_uso
            name: USO correction to Ku-band range
            data: drange_uso
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle_wf_ku
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle_wf_ku SQR
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: flags_sdr_status
            name: SDR status flags
            data: flags_sdr_status
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: flags_sdr_qual
            name: SDR quality flags
            data: flags_sdr_qual
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: track_mode
            name: tracking mode
            data: track_mode
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: seq_nr
            name: 10-Hz sequence number
            data: seq_nr
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: j1
        id3: ja1
        name: JASON-1
        names: jason-1 jason1
        dt1hz: 1.019577
        inclination: 66.04
        frequency: 13.575 5.3
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 1 to 260
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 2002-02-04 01:35:59 UTC
                longitude: 99.92
                cycle_number: 3
                pass_number: 1
            start_time: 2002-01-15 00:00:00 UTC
        phase:
            id: b
            mission: Interleaved Mission
            cycles: 262 to 374
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 2009-02-20 04:19:04 UTC
                longitude: 98.5
                cycle_number: 263
                pass_number: 1
            start_time: 2009-02-10 00:00:00 UTC
        phase:
            id: c
            mission: Geodetic Mission
            cycles: 382 to 425
            repeat:
                days: 406.528444
                passes: 10438
            reference_pass:
                time: 2012-05-07 14:57:08 UTC
                longitude: 308.15
                cycle_number: 1
                pass_number: 1
            start_time: 2012-05-07 00:00:00 UTC
            end_time: 2013-06-22 00:00:00 UTC
            subcycles:
                start: 382
                lengths: 280 280 280 280 102 280 280 280 280 102 280 280 280 280 102 280 280 280 102 280 280 280 280 102 280 280 280 280 102 280 280 280 280 102 280 280 280 102 280 280 280 280 102
        aliases:
            alt: alt_gdre
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb1: tb_187
            tb2: tb_238
            tb3: tb_340
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms sig0_rms attitude
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_eiggl04s
            name: EIGEN-GL04c orbital altitude
            data: alt_eiggl04s
            units: m
            standard_name: height_above_reference_ellipsoid
            source: EIGEN-GL04c
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gps
            name: GPS orbital altitude
            data: alt_gps
            units: m
            standard_name: height_above_reference_ellipsoid
            source: JPL GPS orbits (jas1_gps/rlse11a)
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_eig6s2
            name: ESOC EIGEN-6S2 orbital altitude
            data: alt_eig6s2
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESOC, EIGEN-6S2
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdrd
            name: CNES GDR-D orbital altitude
            data: alt_gdrd
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-D standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_std1204
            name: GSFC/Std1204 orbital altitude
            data: alt_std1204
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC/Std1204
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 8.2f
            compress:
                type: int32
                scale_factor: 0.01
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad_enh
            name: original radiometer wet tropospheric correction
            data: wet_tropo_rad_enh
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer with coastal correction
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim_c
            name: JPL GIM ionospheric correction (C-band)
            data: iono_gim 6.56036 MUL
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -3 to 0.3
            plot_range: -1 to 0.15
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: CLS non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_c
            name: CLS non-parametric sea state bias (C-band)
            data: ssb_cls_c
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: This sea state bias correction is added to C-band range when determining ionospheric correction.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_tran2012
            name: Tran et al. 2012 non-parametric sea state bias
            data: ssb_tran2012
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al. 2012 (ssb_col_J1_1_111_v2012ostst.rs)
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_rad
            name: radiometer wind speed
            data: wind_speed_rad
            units: m/s
            standard_name: wind_speed
            source: radiometer
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_c
            name: std dev of C-band range
            data: range_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: range_numval_c
            name: number of valid C-band measurements
            data: range_numval_c
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_187
            name: radiometer brightness temperature (18.7 GHz)
            data: tb_187
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_340
            name: radiometer brightness temperature (34.0 GHz)
            data: tb_340
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: side_A side_B
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_187_or_238 bad_tb_340
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_alt_track_mode
            name: altimeter tracking mode
            data: bit 14
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: nominal c_band_coarse
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: alt_side_B attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_tb2_bad tb2_bad range_suspect swh_suspect backscatter_suspect c_band_coarse orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: flags_orig
            name: original flag word (before enhancement)
            data: flags_orig
            units: no_unit
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_dat
            name: datation correction to range
            data: drange_dat
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            limits: -0.2 to 0.64
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: off_nadir_angle2_pf
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: j2
        id3: ja2
        name: JASON-2
        names: jason-2 jason2
        dt1hz: 1.020152
        inclination: 66.04
        frequency: 13.575 5.3
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 0 to 303
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 2008-07-12 01:48:13 UTC
                longitude: 99.92
                cycle_number: 1
                pass_number: 1
                absolute_orbit_number: 102
            start_time: 2008-07-04 00:00:00 UTC
        phase:
            id: b
            mission: Interleaved Mission
            cycles: 305 to 327
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 2016-10-17 09:24:22 UTC
                longitude: 98.51
                cycle_number: 306
                pass_number: 1
                absolute_orbit_number: 38774
            start_time: 2016-10-14 00:00:00 UTC
        phase:
            id: c
            mission: Geodetic Mission 1
            cycles: 332 to 355
            repeat:
                days: 367.8446
                passes: 9472
            reference_pass:
                time: 2017-07-11 11:00:37 UTC
                longitude: 336.37
                cycle_number: 1
                pass_number: 33
            start_time: 2017-07-11 00:00:00 UTC
            subcycles:
                start: 332
                lengths: 434 434 434 434 332 434 434 434 332 434 434 434 434 332 434 434 434 332 434 434 434 434 332
        phase:
            id: d
            mission: Geodetic Mission 2
            cycles: 356 to 369
            repeat:
                days: 367.8446
                passes: 9472
            reference_pass:
                time: 2018-07-14 07:16:43 UTC
                longitude: 336.39
                cycle_number: 1
                pass_number: 33
            start_time: 2018-07-25 00:00:00 UTC
            subcycles:
                start: 356
                lengths: 434 434 434 434 332 434 434 434 332 434 434 434 434 332 434 434 434 332 434 434 434 434 332
        phase:
            id: d
            mission: Geodetic Mission 2
            cycles: 375 to 499
            repeat:
                days: 367.8446
                passes: 9472
            reference_pass:
                time: 2018-10-02 14:46:08 UTC
                longitude: 336.39
                cycle_number: 1
                pass_number: 33
            start_time: 2019-05-22 00:00:00 UTC
            subcycles:
                start: 361
                lengths: 434 434 434 434 332 434 434 434 332 434 434 434 434 332 434 434 434 332 434 434 434 434 332
        aliases:
            alt: alt_gdre alt_gdrd
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb1: tb_187
            tb2: tb_238
            tb3: tb_340
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms sig0_rms attitude
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: sla_mle3
            name: sea level anomaly (MLE3)
            data: alt range_ku_mle3 SUB dry_tropo SUB wet_tropo SUB iono_alt_smooth_mle3 SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb_cls_mle3 SUB mss SUB ref_frame_offset_mle3 SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - MLE3 range - all (MLE3) altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh_ku_mle3 sig0_ku_mle3 range_rms_ku_mle3 range_numval_ku_mle3 flags_mle3 swh_rms_ku_mle3 sig0_rms_ku_mle3
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha_mle3
            name: sea surface height anomaly (MLE3)
            data: ssha_mle3
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - MLE3 range - all (MLE3) altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla_mle3 variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gps
            name: GPS orbital altitude
            data: alt_gps
            units: m
            standard_name: height_above_reference_ellipsoid
            source: JPL GPS orbits (jas2_gps/rlse14a)
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_eig6s2
            name: ESOC EIGEN-6S2 orbital altitude
            data: alt_eig6s2
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESOC, EIGEN-6S2
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdrd
            name: CNES GDR-D orbital altitude
            data: alt_gdrd
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-D standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_std1204
            name: GSFC/Std1204 orbital altitude
            data: alt_std1204
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC/Std1204
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_std1404
            name: GSFC/Std1404 orbital altitude
            data: alt_std1404
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC/Std1404
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 8.2f
            compress:
                type: int32
                scale_factor: 0.01
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: range_ku_mle3
            name: Ku-band range corrected for instr. effects (MLE3)
            data: range_ku_mle3
            units: m
            standard_name: altimeter_range
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim_c
            name: JPL GIM ionospheric correction (C-band)
            data: iono_gim 6.56036 MUL
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -3 to 0.3
            plot_range: -1 to 0.15
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_mle3
            name: dual-frequency ionospheric correction (MLE3)
            data: iono_alt_mle3
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth_mle3
            name: smoothed dual-frequency ionospheric correction (MLE3)
            data: iono_alt_smooth_mle3
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: CLS non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_c
            name: CLS non-parametric sea state bias (C-band)
            data: ssb_cls_c
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: This sea state bias correction is added to C-band range when determining ionospheric correction.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_mle3
            name: CLS non-parametric sea state bias (MLE3)
            data: ssb_cls_mle3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_tran2012
            name: Tran et al. 2012 non-parametric sea state bias
            data: ssb_tran2012
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al. 2012 (ssb_col_J2_Ku_mle4_1_36_v2012ostst.rs)
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm96
            name: EGM96 geoid height
            data: geoid_egm96
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM96
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ku_mle3
            name: Ku-band significant wave height (MLE3)
            data: swh_ku_mle3
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku_mle3
            name: Ku-band backscatter coefficient (MLE3)
            data: sig0_ku_mle3
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_rad
            name: radiometer wind speed
            data: wind_speed_rad
            units: m/s
            standard_name: wind_speed
            source: radiometer
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt_mle3
            name: altimeter wind speed (MLE3)
            data: wind_speed_alt_mle3
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_c
            name: std dev of C-band range
            data: range_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku_mle3
            name: std dev of Ku-band range (MLE3)
            data: range_rms_ku_mle3
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: range_numval_ku_mle3
            name: number of valid Ku-band measurements (MLE3)
            data: range_numval_ku_mle3
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: range_numval_c
            name: number of valid C-band measurements
            data: range_numval_c
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_187
            name: radiometer brightness temperature (18.7 GHz)
            data: tb_187
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_340
            name: radiometer brightness temperature (34.0 GHz)
            data: tb_340
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: side_A side_B
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_187_or_238 bad_tb_340
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: alt_side_B attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_tb2_bad tb2_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: flags_mle3
            name: flag word (MLE3)
            data: flags_mle3
            units: no_unit
            flag_masks: hardware_bad attitude_bad flag_rad_oper_mode alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_bad tb2_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku_mle3
            name: std dev of Ku-band significant wave height (MLE3)
            data: swh_rms_ku_mle3
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku_mle3
            name: std dev of Ku-band backscatter coefficient (MLE3)
            data: sig0_rms_ku_mle3
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            limits: -0.2 to 0.64
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: off_nadir_angle2_pf SQRT
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: off_nadir_angle2_pf
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: ref_frame_offset_mle3
            name: reference frame offset (MLE3)
            data: ref_frame_offset_mle3
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: j3
        id3: ja3
        name: JASON-3
        names: jason3 jason-3
        dt1hz: 1.020152
        inclination: 66.04
        frequency: 13.575 5.3
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 0 to 999
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 2016-02-17 10:56:52 UTC
                longitude: 99.92
                cycle_number: 1
                pass_number: 1
                absolute_orbit_number: 385
            start_time: 2016-02-12 00:00:00 UTC
        aliases:
            alt: alt_gdre
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb1: tb_187
            tb2: tb_238
            tb3: tb_340
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms sig0_rms attitude
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: sla_mle3
            name: sea level anomaly (MLE3)
            data: alt range_ku_mle3 SUB dry_tropo SUB wet_tropo SUB iono_alt_smooth_mle3 SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb_cls_mle3 SUB mss SUB ref_frame_offset_mle3 SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - MLE3 range - all (MLE3) altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh_ku_mle3 sig0_ku_mle3 range_rms_ku_mle3 range_numval_ku_mle3 flags_mle3 swh_rms_ku_mle3 sig0_rms_ku_mle3
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha_mle3
            name: sea surface height anomaly (MLE3)
            data: ssha_mle3
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - MLE3 range - all (MLE3) altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla_mle3 variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_gdrf
            name: CNES GDR-F orbital altitude
            data: alt_gdrf
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-F standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 8.2f
            compress:
                type: int32
                scale_factor: 0.01
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: range_ku_mle3
            name: Ku-band range corrected for instr. effects (MLE3)
            data: range_ku_mle3
            units: m
            standard_name: altimeter_range
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim_c
            name: JPL GIM ionospheric correction (C-band)
            data: iono_gim 6.56036 MUL
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -3 to 0.3
            plot_range: -1 to 0.15
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_mle3
            name: dual-frequency ionospheric correction (MLE3)
            data: iono_alt_mle3
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth_mle3
            name: smoothed dual-frequency ionospheric correction (MLE3)
            data: iono_alt_smooth_mle3
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: CLS non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_c
            name: CLS non-parametric sea state bias (C-band)
            data: ssb_cls_c
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: This sea state bias correction is added to C-band range when determining ionospheric correction.
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls_mle3
            name: CLS non-parametric sea state bias (MLE3)
            data: ssb_cls_mle3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_tran2012
            name: Tran et al. 2012 non-parametric sea state bias
            data: ssb_tran2012
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: Tran et al. 2012 (ssb_col_J2_Ku_mle4_1_36_v2012ostst.rs)
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm96
            name: EGM96 geoid height
            data: geoid_egm96
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM96
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ku_mle3
            name: Ku-band significant wave height (MLE3)
            data: swh_ku_mle3
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ku_mle3
            name: Ku-band backscatter coefficient (MLE3)
            data: sig0_ku_mle3
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_rad
            name: radiometer wind speed
            data: wind_speed_rad
            units: m/s
            standard_name: wind_speed
            source: radiometer
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt_mle3
            name: altimeter wind speed (MLE3)
            data: wind_speed_alt_mle3
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_c
            name: std dev of C-band range
            data: range_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku_mle3
            name: std dev of Ku-band range (MLE3)
            data: range_rms_ku_mle3
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: range_numval_ku_mle3
            name: number of valid Ku-band measurements (MLE3)
            data: range_numval_ku_mle3
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 15.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: range_numval_c
            name: number of valid C-band measurements
            data: range_numval_c
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_187
            name: radiometer brightness temperature (18.7 GHz)
            data: tb_187
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_340
            name: radiometer brightness temperature (34.0 GHz)
            data: tb_340
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: side_A side_B
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_187_or_238 bad_tb_340
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: alt_side_B attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_tb2_bad tb2_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65384 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: flags_mle3
            name: flag word (MLE3)
            data: flags_mle3
            units: no_unit
            flag_masks: hardware_bad attitude_bad flag_rad_oper_mode alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_bad tb2_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku_mle3
            name: std dev of Ku-band significant wave height (MLE3)
            data: swh_rms_ku_mle3
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.5
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku_mle3
            name: std dev of Ku-band backscatter coefficient (MLE3)
            data: sig0_rms_ku_mle3
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle2_wf_ku SQRT
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            limits: -0.2 to 0.64
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: off_nadir_angle2_pf SQRT
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: off_nadir_angle2_pf
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: ref_frame_offset_mle3
            name: reference frame offset (MLE3)
            data: ref_frame_offset_mle3
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: n1
        id3: en1
        name: ENVISAT1
        names: envisat
        dt1hz: 1.114
        inclination: 98.54
        frequency: 13.575 3.2
        phase:
            id: b
            mission: Multi-disciplinary Phase
            cycles: 6 to 94
            repeat:
                days: 35.0
                passes: 1002
            reference_pass:
                time: 2002-09-30 21:59:30 UTC
                longitude: 0.13
                cycle_number: 10
                pass_number: 1
            start_time: 2002-05-14 00:00:00 UTC
        phase:
            id: c
            mission: Extension Phase
            cycles: 95 to 113
            repeat:
                days: 30.0
                passes: 862
            reference_pass:
                time: 2010-10-27 21:57:36 UTC
                longitude: 0.55
                cycle_number: 96
                pass_number: 1
            start_time: 2010-10-24 07:05:26 UTC
            end_time: 2012-04-09 00:00:00 UTC
        aliases:
            alt: alt_gdrd alt_gdrcp
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_238
            tb3: tb_365
            peakiness: peakiness_ku
            drange: drange_ku
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms peakiness
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_eig6c
            name: ESOC EIGEN-6C orbital altitude
            data: alt_eig6c
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESOC, EIGEN-6C
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrd
            name: CNES GDR-D orbital altitude
            data: alt_gdrd
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-D standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: range_s
            name: S-band range corrected for instr. effects
            data: range_s
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.05
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_doris
            name: DORIS ionospheric correction
            data: iono_doris
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: DORIS
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: CLS non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_hyb
            name: hybrid sea state bias
            data: ssb_hyb
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: NOAA/EUMETSAT hybrid model
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: -0.5 to 8.0
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_s
            name: S-band significant wave height
            data: swh_s
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: -0.5 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_s
            name: S-band backscatter coefficient
            data: sig0_s
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 8 to 18
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_cls
            name: altimeter wind speed (CLS algo)
            data: wind_speed_cls
            units: m/s
            standard_name: wind_speed
            source: altimeter, CLS algorithm
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_rms_s
            name: std dev of S-band range
            data: range_rms_s
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_365
            name: radiometer brightness temperature (36.5 GHz)
            data: tb_365
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 140 to 200
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: peakiness_ku
            name: Ku-band peakiness
            data: peakiness_ku
            units: 1
            limits: 1.4 to 1.9
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: peakiness_s
            name: S-band peakiness
            data: peakiness_s
            units: 1
            limits: 1.4 to 1.9
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: side_A side_B
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (rain/ice)
            data: bit 7
            units: no_unit
            flag_values: no_rain_ice rain_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_238 bad_tb_365
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: alt_side_B attitude_bad continental_ice alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect tracking_preset orbit_degraded
            limits: 36712 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Ku-band range bias
            data: drange_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_uso
            name: USO correction to Ku-band range
            data: drange_uso
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_s
            name: std dev of S-band significant wave height
            data: swh_rms_s
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_s
            name: std dev of S-band backscatter coefficient
            data: sig0_rms_s
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ku
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_s
            name: S-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_s
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: rain_ice_index
            name: rain/ice index
            data: rain_ice_index
            units: no_unit
            format: 4.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_class
            name: sea ice classification
            data: seaice_class
            units: no_unit
            standard_name: sea_ice_classification
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: pn
        id3: pos
        name: POSEIDON
        names: poseidon
        dt1hz: 1.00104
        inclination: 66.04
        frequency: 13.65
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 1 to 361
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 1992-10-03 02:04:51 UTC
                longitude: 99.92
                cycle_number: 2
                pass_number: 1
            start_time: 1992-10-01 00:00:00 UTC
            end_time: 2002-07-13 00:00:00 UTC
        aliases:
            alt: alt_gdrcp alt_jgm3
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_bm3
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb1: tb_180
            tb2: tb_210
            tb3: tb_370
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_jgm3
            name: JGM-3 orbital altitude
            data: alt_jgm3
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC, JGM-3
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_std1204
            name: GSFC/Std1204 orbital altitude
            data: alt_std1204
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC/Std1204
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to -0.001
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_bent
            name: Bent ionospheric correction
            data: iono_bent
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: Bent climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_doris
            name: DORIS ionospheric correction
            data: iono_doris
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: DORIS
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM4 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_hyb
            name: hybrid sea state bias
            data: ssb_hyb
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: NOAA/EUMETSAT hybrid model
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_rad
            name: radiometer wind speed
            data: wind_speed_rad
            units: m/s
            standard_name: wind_speed
            source: radiometer
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.4
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 16.5 to 20.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_180
            name: radiometer brightness temperature (18.0 GHz)
            data: tb_180
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_210
            name: radiometer brightness temperature (21.0 GHz)
            data: tb_210
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_370
            name: radiometer brightness temperature (37.0 GHz)
            data: tb_370
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: nominal bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_rad_oper_mode
            name: TMR 21 GHz Channel status
            data: bit 2
            units: no_unit
            flag_values: A B
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_values: ok interpolation_near_land extrapolation interpolation_failed
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_alt_track_mode
            name: altimeter tracking mode
            data: bit 14
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: nominal acquisition
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: hardware_bad attitude_bad flag_rad_oper_mode not_used alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect tracking_acquisition orbit_degraded
            limits: 480 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_swh_att_ku
            name: Ku-band range correction due to SWH/attitude
            data: drange_swh_att_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_cg
            name: center-of-gravity correction to range
            data: drange_cg
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle_wf_ku
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle_wf_ku SQR
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: off_nadir_angle_pf
            name: off-nadir pointing angle from platform
            data: off_nadir_angle_pf
            units: degrees
            plot_range: 0.0 to 0.01
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_pf
            name: off-nadir pointing angle squared from platform
            data: off_nadir_angle_pf SQR
            units: degrees^2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dswh_swh_att_ku
            name: Ku-band significant wave height correction due to SWH/attitude
            data: dswh_swh_att_ku
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: tx
        id3: top
        name: TOPEX
        names: topex
        dt1hz: 1.072414
        inclination: 66.04
        frequency: 13.6 5.3
        phase:
            id: a
            mission: Exact Repeat Mission
            cycles: 1 to 364
            repeat:
                days: 9.9156428
                passes: 254
            reference_pass:
                time: 1992-10-03 02:04:51 UTC
                longitude: 99.92
                cycle_number: 2
                pass_number: 1
            start_time: 1992-09-25 00:00:00 UTC
        phase:
            id: n
            mission: Drift Phase
            cycles: 365 to 368
            repeat:
                days: 9.917089
                passes: 254
                longitude_drift: -0.355
            reference_pass:
                time: 2002-08-11 11:09:08 UTC
                longitude: 99.92
                cycle_number: 365
                pass_number: 1
            start_time: 2002-08-11 10:41:00 UTC
        phase:
            id: b
            mission: Interleaved Mission
            cycles: 369 to 481
            repeat:
                days: 9.915642
                passes: 254
            reference_pass:
                time: 2002-09-20 03:08:57 UTC
                longitude: 98.5
                cycle_number: 369
                pass_number: 1
            start_time: 2002-09-20 02:40:50 UTC
            end_time: 2005-10-09 00:00:00 UTC
        aliases:
            alt: alt_gdrcp alt_jgm3
            range: range_ku
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_alt_smooth iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_cls
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ku
            sig0: sig0_ku
            wind_speed: wind_speed_alt
            range_rms: range_rms_ku
            range_numval: range_numval_ku
            topo: topo_srtm30plus topo_srtm15plus
            tb1: tb_180
            tb2: tb_210
            tb3: tb_370
            swh_rms: swh_rms_ku
            sig0_rms: sig0_rms_ku
            attitude: off_nadir_angle2_wf_ku
            dswh: dswh_ku
            dsig0: dsig0_ku
            dsig0_atmos: dsig0_atmos_ku
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags swh_rms
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_jgm3
            name: JGM-3 orbital altitude
            data: alt_jgm3
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC, JGM-3
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_cnes
            name: CNES orbital altitude
            data: alt_cnes
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_gdrcp
            name: GDR-C' orbital altitude
            data: alt_gdrcp
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GDR-C' standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 11.3f
            compress:
                type: int32
                scale_factor: 0.001
        variable:
            id: alt_std1204
            name: GSFC/Std1204 orbital altitude
            data: alt_std1204
            units: m
            standard_name: height_above_reference_ellipsoid
            source: GSFC/Std1204
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_slcci
            name: GFZ/SLCCI/VER11 orbital altitude
            data: alt_slcci
            units: m
            standard_name: height_above_reference_ellipsoid
            source: ESA SLCCI project
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ku
            name: Ku-band range corrected for instr. effects
            data: range_ku
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: range_c
            name: C-band range corrected for instr. effects
            data: range_c
            units: m
            standard_name: altimeter_range
            limits: 1300000.0 to 1400000.0
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 1300000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to -0.001
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt
            name: dual-frequency ionospheric correction
            data: iono_alt
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_bent
            name: Bent ionospheric correction
            data: iono_bent
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: Bent climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_alt_smooth
            name: smoothed dual-frequency ionospheric correction
            data: iono_alt_smooth
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: dual-frequency altimeter after smoothing
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_doris
            name: DORIS ionospheric correction
            data: iono_doris
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: DORIS
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM4 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_cls
            name: CLS non-parametric sea state bias
            data: ssb_cls
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CLS
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_csr
            name: CSR sea state bias
            data: ssb_csr
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: CSR
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ku
            name: Ku-band significant wave height
            data: swh_ku
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_c
            name: C-band significant wave height
            data: swh_c
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_ku
            name: Ku-band backscatter coefficient
            data: sig0_ku
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_c
            name: C-band backscatter coefficient
            data: sig0_c
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 10 to 20
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_rad
            name: radiometer wind speed
            data: wind_speed_rad
            units: m/s
            standard_name: wind_speed
            source: radiometer
            limits: 0 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ku
            name: std dev of Ku-band range
            data: range_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.15
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ku
            name: number of valid Ku-band measurements
            data: range_numval_ku
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 8.5 to 10.5
            plot_range: 0 to 11
            format: 3.0f
            compress:
                type: int8
            default: 20
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_180
            name: radiometer brightness temperature (18.0 GHz)
            data: tb_180
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_210
            name: radiometer brightness temperature (21.0 GHz)
            data: tb_210
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_370
            name: radiometer brightness temperature (37.0 GHz)
            data: tb_370
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: flag_alt_oper_mode
            name: altimeter operating mode
            data: bit 0
            units: no_unit
            flag_values: nominal bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_rad_oper_mode
            name: TMR 21 GHz Channel status
            data: bit 2
            units: no_unit
            flag_values: A B
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_iono_alt
            name: quality of dual-frequency ionospheric correction
            data: bit 3
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_rain_ice
            name: corruption of radiometer measurement (rain or ice)
            data: bit 8
            units: no_unit
            flag_values: ok rain_or_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_values: ok interpolation_near_land extrapolation interpolation_failed
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_alt_track_mode
            name: altimeter tracking mode
            data: bit 14
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: nominal coarse_or_acquisition
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: hardware_bad attitude_bad flag_rad_oper_mode alt_iono_bad alt_land alt_non_ocean rad_land alt_rain_or_ice rad_rain_or_ice tb1_tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect tracking_acquisition orbit_degraded
            limits: 49640 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: drange_ku
            name: Cal1 range correction
            data: drange_ku
            units: m
            comment: This correction was added back to the Ku-band range
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: drange_swh_att_ku
            name: Ku-band range correction due to SWH/attitude
            data: drange_swh_att_ku
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_swh_att_c
            name: C-band range correction due to SWH/attitude
            data: drange_swh_att_c
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: drange_cg
            name: center-of-gravity correction to range
            data: drange_cg
            units: m
            comment: Range correction already added to range
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ku
            name: std dev of Ku-band significant wave height
            data: swh_rms_ku
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.9
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: swh_rms_c
            name: std dev of C-band significant wave height
            data: swh_rms_c
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ku
            name: std dev of Ku-band backscatter coefficient
            data: sig0_rms_ku
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_c
            name: std dev of C-band backscatter coefficient
            data: sig0_rms_c
            units: no_unit
            comment: Based on valid high-rate measurements
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle_wf_ku
            name: off-nadir pointing angle from waveform
            data: off_nadir_angle_wf_ku
            units: degrees
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: off_nadir_angle2_wf_ku
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle_wf_ku SQR
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dswh_ku
            name: net instrument correction to Ku-band significant wave height
            data: dswh_ku
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: dswh_c
            name: net instrument correction to C-band significant wave height
            data: dswh_c
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: dswh_swh_att_ku
            name: Ku-band significant wave height correction due to SWH/attitude
            data: dswh_swh_att_ku
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dswh_swh_att_c
            name: C-band significant wave height correction due to SWH/attitude
            data: dswh_swh_att_c
            units: m
            comment: Correction already added to significant wave height
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dsig0_ku
            name: Ku-band backscatter coefficient bias
            data: dsig0_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: dsig0_c
            name: C-band backscatter coefficient bias
            data: dsig0_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: dsig0_atmos_ku
            name: Ku-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ku
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 0.5
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
            default: 0.22
        variable:
            id: dsig0_atmos_c
            name: C-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_c
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: gate_index_ku
            name: Ku-band gate index
            data: gate_index_ku
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: gate_index_c
            name: C-band gate index
            data: gate_index_c
            units: no_unit
            format: 6.0f
            compress:
                type: int16
        variable:
            id: rain_ice_index
            name: rain/ice index
            data: rain_ice_index
            units: no_unit
            format: 4.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16
    satellite:
        id: sa
        id3: srl
        name: SARAL
        names: saral
        dt1hz: 1.033824
        inclination: 98.54
        frequency: 35.75
        phase:
            id: a
            mission: Multi-disciplinary Phase
            cycles: 0 to 35
            repeat:
                days: 35.0
                passes: 1002
            reference_pass:
                time: 2013-03-14 06:04:39 UTC
                longitude: 0.13
                cycle_number: 1
                pass_number: 1
                absolute_orbit_number: 240
            start_time: 2013-02-25 00:00:00 UTC
        phase:
            id: b
            mission: Drifting Phase
            cycles: 36 to 40
            repeat:
                days: 35.00654
                passes: 1002
                longitude_drift: -2.4
            reference_pass:
                time: 2016-07-04 13:18:19 UTC
                longitude: 251.07
                cycle_number: 36
                pass_number: 1
                absolute_orbit_number: 17536
            start_time: 2016-07-04 12:00:00 UTC
        phase:
            id: b
            mission: Drifting Phase
            cycles: 41 to 47
            repeat:
                days: 35.0061
                passes: 1002
                longitude_drift: -2.24
            reference_pass:
                time: 2016-12-26 14:05:24 UTC
                longitude: 239.08
                cycle_number: 41
                pass_number: 1
                absolute_orbit_number: 20041
            start_time: 2016-12-26 13:40:15 UTC
        phase:
            id: b
            mission: Drifting Phase
            cycles: 48 to 57
            repeat:
                days: 35.00578
                passes: 1002
                longitude_drift: -2.13
            reference_pass:
                time: 2017-08-28 15:06:53 UTC
                longitude: 223.42
                cycle_number: 48
                pass_number: 1
                absolute_orbit_number: 23548
            start_time: 2017-08-28 14:41:44 UTC
        phase:
            id: b
            mission: Drifting Phase
            cycles: 58 to 99
            repeat:
                days: 35.0054
                passes: 1002
                longitude_drift: -1.99
            reference_pass:
                time: 2018-08-13 16:30:07 UTC
                longitude: 202.15
                cycle_number: 58
                pass_number: 1
                absolute_orbit_number: 28558
            start_time: 2018-08-13 16:04:58 UTC
        aliases:
            alt: alt_gdre
            range: range_ka
            dry_tropo: dry_tropo_ecmwf
            wet_tropo: wet_tropo_rad wet_tropo_ecmwf
            iono: iono_gim iono_nic09
            inv_bar: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            dac: inv_bar_mog2d_era inv_bar_mog2d inv_bar_mok2d
            tide_ocean: tide_ocean_fes14
            tide_load: tide_load_fes14
            ssb: ssb_hyb
            geoid: geoid_egm2008
            mss: mss_dtu15
            swh: swh_ka
            sig0: sig0_ka
            wind_speed: wind_speed_alt
            range_rms: range_rms_ka
            range_numval: range_numval_ka
            topo: topo_srtm30plus topo_srtm15plus
            tb2: tb_238
            tb3: tb_370
            peakiness: peakiness_ka
            swh_rms: swh_rms_ka
            sig0_rms: sig0_rms_ka
            attitude: off_nadir_angle2_wf_ka
            dsig0_atmos: dsig0_atmos_ka
        variable:
            id: sla
            name: sea level anomaly
            data: alt range SUB dry_tropo SUB wet_tropo SUB iono SUB dac SUB tide_solid SUB tide_ocean SUB tide_load SUB tide_pole SUB ssb SUB mss SUB ref_frame_offset SUB
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            quality_flag: swh sig0 range_rms range_numval flags peakiness
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssha
            name: sea surface height anomaly
            data: ssha
            units: m
            standard_name: sea_surface_height_above_sea_level
            comment: Sea level determined from satellite altitude - range - all altimetric corrections.
            		These values were computed when the data set was created, in contrast to the sla variable.
            limits: -3 to 3
            plot_range: -0.4 to 0.4
            format: 8.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: adt
            name: absolute dynamic topography
            data: sla mss ADD geoid SUB
            units: m
            standard_name: absolute_dynamic_topography
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: time
            name: time
            data: time
            units: seconds since 1985-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement. Attribute leap_second gives time of leap second if any occurs
            	during the data set
            format: 17.6f
        variable:
            id: time_rel_eq
            name: time relative to equator crossing
            data: time eqtime SUB
            units: s
            standard_name: time
            comment: UTC time relative to the equator crossing (negative is before, positive is after)
            format: 12.6f
        variable:
            id: time_local_solar
            name: local solar time of day
            data: time lon 240 MUL ADD 86400 FMOD
            units: s
            standard_name: time
            comment: Local solar time (in seconds) since start of the solar day
            format: 12.6f
        variable:
            id: time_ymdhms
            name: time
            data: time YMDHMS
            units: unknown
            standard_name: time
            comment: UTC time formatted as yymmddhhmmss
            format: 19.6f
        variable:
            id: time_mjd
            name: Modified Julian Days
            data: time 86400 DIV 46066 ADD
            units: days since 1858-11-17 00:00:00
            standard_name: time
            comment: UTC time of measurement expressed in Modified Julian Days
            format: 12.6f
        variable:
            id: time_2000
            name: time
            data: time 473299200 SUB
            units: seconds since 2000-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 16.6f
        variable:
            id: time_1950
            name: time
            data: time 86400 DIV 12784 ADD
            units: days since 1950-01-01 00:00:00
            standard_name: time
            comment: UTC time of measurement
            format: 12.6f
        variable:
            id: lat
            name: latitude
            data: lat
            units: degrees_north
            standard_name: latitude
            comment: Positive latitude is North latitude, negative latitude is South latitude
            limits: -90 to 90
            format: 10.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: lon
            name: longitude
            data: lon
            units: degrees_east
            standard_name: longitude
            comment: East longitude relative to Greenwich meridian
            limits: 0 to 360
            format: 11.6f
            compress:
                type: int32
                scale_factor: 1e-06
        variable:
            id: alt_gdrd
            name: CNES GDR-D orbital altitude
            data: alt_gdrd
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-D standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_gdre
            name: CNES GDR-E orbital altitude
            data: alt_gdre
            units: m
            standard_name: height_above_reference_ellipsoid
            source: CNES, GDR-E standards
            comment: Altitude of satellite above the TOPEX reference ellipsoid
            format: 12.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: alt_rate
            name: orbital altitude rate
            data: alt_rate
            units: m/s
            comment: The reference surface for the orbital altitude rate is MSS
            limits: -30 to 30
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: range_ka
            name: Ka-band range corrected for instr. effects
            data: range_ka
            units: m
            standard_name: altimeter_range
            limits: 750000.0 to 850000.0
            format: 11.4f
            compress:
                type: int32
                scale_factor: 0.0001
                add_offset: 700000.0
        variable:
            id: dry_tropo_ecmwf
            name: ECMWF dry tropospheric correction
            data: dry_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_ncep
            name: NCEP dry tropospheric correction
            data: dry_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA/NCEP reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_gfs
            name: NOAA GFS dry tropospheric correction
            data: dry_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: NOAA Global Forecast System
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: dry_tropo_era
            name: ERA dry tropospheric correction
            data: dry_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_dry_troposphere
            source: ECMWF interim reanalysis
            comment: A dry tropospheric correction must be added to range to correct for dry troposphere delays
            limits: -2.4 to -2.1
            plot_range: -2.4 to -2.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_rad
            name: radiometer wet tropospheric correction
            data: wet_tropo_rad
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: radiometer
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ecmwf
            name: ECMWF wet tropospheric correction
            data: wet_tropo_ecmwf
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_ncep
            name: NCEP wet tropospheric correction
            data: wet_tropo_ncep
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA/NCEP reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_gfs
            name: NOAA/GFS wet tropospheric correction
            data: wet_tropo_gfs
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: NOAA Global Forecast System
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_era
            name: ERA wet tropospheric correction
            data: wet_tropo_era
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            source: ECMWF interim reanalysis
            comment: A wet tropospheric correction must be added to range to correct for wet troposphere delays
            limits: -0.6 to 0.0
            plot_range: -0.4 to 0.0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wet_tropo_diff
            name: difference between radiometer and ECMWF wet tropospheric correction
            data: wet_tropo_rad wet_tropo_ecmwf SUB
            units: m
            standard_name: altimeter_range_correction_due_to_wet_troposphere
            comment: Determined by subtracting wet_tropo_ecmwf from wet_tropo_rad
            limits: -0.6 to 0.6
            plot_range: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_gim
            name: JPL GIM ionospheric correction
            data: iono_gim
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: JPL GIM 2-hourly maps
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_iri2007
            name: IRI2007 ionospheric correction
            data: iono_iri2007
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: IRI2007 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: iono_nic09
            name: NIC09 ionospheric correction
            data: iono_nic09
            units: m
            standard_name: altimeter_range_correction_due_to_ionosphere
            source: NIC09 climatology
            comment: An ionospheric correction must be added to range to correct for ionosphere delays
            limits: -0.4 to 0.04
            plot_range: -0.15 to 0.02
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_static
            name: static inverse barometer correction
            data: inv_bar_static
            units: m
            standard_name: sea_surface_height_correction_due_to_air_pressure_at_low_frequency
            source: ECMWF
            comment: Effect of the static atmospheric pressure on sea surface, subtracting global mean
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_global
            name: global mean inverse barometer correction
            data: inv_bar_global
            units: m
            source: ECMWF
            comment: Global mean effect of the static atmospheric pressure on sea surface height
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d
            name: MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ECMWF forcing
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_era
            name: MOG2D dynamic atmospheric correction (ERA Interim forcing)
            data: inv_bar_mog2d_era
            units: m
            source: CNES/CNRS-LEGOS/CLS MOG2D-G HR barotropic model with ERA-Interim forcing, ESA SLCCI project
            comment: Combined low and high frequency effect of atmospheric pressure and wind on sea surface height
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mok2d
            name: MOK2D inverse barometer correction
            data: inv_bar_static 0.9603 MUL 0.0025 SUB
            units: m
            comment: Scaled version of static IB to match MOG2D
            limits: -1 to 1
            plot_range: -0.4 to 0.6
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: inv_bar_mog2d_mean
            name: local mean MOG2D dynamic atmospheric correction
            data: inv_bar_mog2d_mean
            units: m
            source: MOG2D
            comment: Long-term temporal mean of the MOG2D dynamic atmospheric correction at measurement location
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_solid
            name: solid earth tide
            data: tide_solid
            units: m
            standard_name: sea_surface_height_amplitude_due_to_earth_tide
            source: Cartwright, Taylor, Edden
            comment: Calculated using second and third degree constituents, excluding permanent tide
            limits: -1 to 1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes04
            name: FES2004 ocean tide
            data: tide_ocean_fes04
            units: m
            source: FES2004
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_webtide
            name: WebTide ocean tide
            data: tide_ocean_webtide
            units: m
            source: WebTide
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
            default: nan
        variable:
            id: tide_ocean_got48
            name: GOT4.8 ocean tide
            data: tide_ocean_got48
            units: m
            source: GOT4.8
            comment: Ocean tide variation including long-period equilibrium tides
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_got410
            name: GOT4.10c ocean tide (extrapolated)
            data: tide_ocean_got410
            units: m
            source: GOT4.10c (extrapolated)
            comment: Ocean tide variation including long-period equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_ocean_fes14
            name: FES2014b ocean tide
            data: tide_ocean_fes14
            units: m
            source: FES2014b (extrapolated)
            comment: Ocean tide variation including long-period equilibrium and non-equilibrium tides, extrapolated into the coast
            limits: -5 to 5
            plot_range: -2 to 2
            format: 7.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: tide_load_fes04
            name: FES2004 load tide
            data: tide_load_fes04
            units: m
            source: FES2004
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got48
            name: GOT4.8 load tide
            data: tide_load_got48
            units: m
            source: GOT4.8
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_got410
            name: GOT4.10 load tide
            data: tide_load_got410
            units: m
            source: GOT4.10
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_load_fes14
            name: FES2014a load tide
            data: tide_load_fes14
            units: m
            source: FES2014a
            comment: Load tide variation to be added to ocean tide
            limits: -0.5 to 0.5
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_pole
            name: pole tide
            data: tide_pole
            units: m
            standard_name: sea_surface_height_amplitude_due_to_pole_tide
            source: Wahr [1985]
            comment: Variation of absolute sea level due to polar motion
            limits: -0.1 to 0.1
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_internal
            name: HRET v8.1 internal tide
            data: tide_internal
            units: m
            source: HRET v8.1
            comment: Only includes the so-called static harmonic components. It is not included as a correction to the sea surface height, but users can use it to remove the internal tide from the sea surface height anomaly
            limits: -0.2 to 0.2
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_bm3
            name: BM3 sea state bias
            data: ssb_bm3
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: BM3 model
            comment: A sea state bias correction must be added to range to correct for sea state delays
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: ssb_hyb
            name: hybrid sea state bias
            data: ssb_hyb
            units: m
            standard_name: sea_surface_height_bias_due_to_sea_surface_roughness
            source: NOAA/EUMETSAT hybrid model
            limits: -1 to 1
            plot_range: -0.3 to 0.05
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: geoid_egm96
            name: EGM96 geoid height
            data: geoid_egm96
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM96
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_egm2008
            name: EGM2008 geoid height
            data: geoid_egm2008
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EGM2008
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls11
            name: CNES-CLS11 mean sea surface height
            data: mss_cnescls11
            units: m
            source: CNES-CLS11
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu13
            name: DTU13 mean sea surface height
            data: mss_dtu13
            units: m
            source: DTU13
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_eigen6
            name: EIGEN6 geoid height
            data: geoid_eigen6
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: EIGEN6c3stat
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu15
            name: DTU15 mean sea surface height
            data: mss_dtu15
            units: m
            source: DTU15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_cnescls15
            name: CNES-CLS15 mean sea surface height
            data: mss_cnescls15
            units: m
            source: CNES-CLS15
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: geoid_xgm2016
            name: XGM2016 geoid height
            data: geoid_xgm2016
            units: m
            standard_name: geoid_height_above_reference_ellipsoid
            source: XGM2016
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: mss_dtu18
            name: DTU18 mean sea surface height
            data: mss_dtu18
            units: m
            source: DTU18
            format: 10.4f
            compress:
                type: int32
                scale_factor: 0.0001
        variable:
            id: latency
            name: source product latency flag
            data: latency
            units: no_unit
            flag_values: NRT_OGDR STC_IGDR NTC_GDR REP_001 REP_002 REP_003 REP_004 REP_005 REP_006 REP_007 REP_008
            plot_range: 0 to 10
            dimensions: 0
            format: 1x
            compress:
                type: int8
            default: 2
        variable:
            id: swh_ka
            name: Ka-band significant wave height
            data: swh_ka
            units: m
            standard_name: sea_surface_wave_significant_height
            limits: 0 to 8
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_ww3
            name: WaveWatch3 significant wave height
            data: swh_ww3
            units: m
            standard_name: sea_surface_wave_significant_height
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sig0_ka
            name: Ka-band backscatter coefficient
            data: sig0_ka
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave
            limits: 6 to 27
            plot_range: 7 to 17
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wind_speed_alt
            name: altimeter wind speed
            data: wind_speed_alt
            units: m/s
            standard_name: wind_speed
            source: altimeter
            limits: -1 to 30
            plot_range: 0 to 16
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_u
            name: ECMWF model zonal wind speed
            data: wind_speed_ecmwf_u
            units: m/s
            standard_name: eastward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf_v
            name: ECMWF model meridional wind speed
            data: wind_speed_ecmwf_v
            units: m/s
            standard_name: northward_wind
            source: ECMWF
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_ecmwf
            name: ECMWF model wind speed
            data: wind_speed_ecmwf_u wind_speed_ecmwf_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: ECMWF
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_gfs_u
            name: NOAA/GFS model zonal wind speed
            data: wind_speed_gfs_u
            units: m/s
            standard_name: eastward_wind
            source: NOAA Global Forecast System
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_gfs_v
            name: NOAA/GFS model meridional wind speed
            data: wind_speed_gfs_v
            units: m/s
            standard_name: northward_wind
            source: NOAA Global Forecast System
            limits: -30 to 30
            plot_range: -16 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: wind_speed_gfs
            name: NOAA/GFS model wind speed
            data: wind_speed_gfs_u wind_speed_gfs_v HYPOT
            units: m/s
            standard_name: wind_speed
            source: NOAA Global Forecast System
            limits: 0 to 30
            plot_range: 0 to 16
            format: 7.3f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: range_rms_norm
            name: normalized std dev of range
            data: range_rms range_numval 2 SUB SQRT DIV
            units: m
            limits: 0.0 to 0.4
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: range_rms_ka
            name: std dev of Ka-band range
            data: range_rms_ka
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 0.17
            plot_range: 0.0 to 0.2
            format: 6.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: range_numval_ka
            name: number of valid Ka-band measurements
            data: range_numval_ka
            units: 1
            standard_name: altimeter_range number_of_observations
            limits: 32.5 to 40.5
            plot_range: 0 to 21
            format: 3.0f
            compress:
                type: int8
            default: 40
        variable:
            id: topo_dtm2000
            name: DTM2000 topography
            data: topo_dtm2000
            units: m
            source: DTM2000
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm30plus
            name: SRTM30_PLUS topography
            data: topo_srtm30plus
            units: m
            source: SRTM30_PLUS V10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_dtu10
            name: DTU10 topography
            data: topo_dtu10
            units: m
            source: DTU10
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_macess
            name: MACESS topography
            data: topo_macess
            units: m
            source: MACCESS
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_ace2
            name: ACE2 topography
            data: topo_ace2
            units: m
            source: ACE2
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_etopo1
            name: ETOPO1 topography
            data: topo_etopo1
            units: m
            source: ETOPO1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: topo_srtm15plus
            name: SRTM15_PLUS topography
            data: topo_srtm15plus
            units: m
            source: SRTM15_PLUS V1
            format: 7.0f
            compress:
                type: int16
        variable:
            id: tb_238
            name: radiometer brightness temperature (23.8 GHz)
            data: tb_238
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            plot_range: 120 to 260
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: tb_370
            name: radiometer brightness temperature (37.0 GHz)
            data: tb_370
            units: K
            standard_name: surface_brightness_temperature
            source: radiometer
            comment: Brightness temperatures are unsmoothed
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: peakiness_ka
            name: Ka-band peakiness
            data: peakiness_ka
            units: 1
            limits: 3.2 to 6.0
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: qual_attitude
            name: quality of attitude
            data: bit 1
            units: no_unit
            flag_values: ok bad
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_continental_ice
            name: continental ice flag
            data: bit 2
            units: no_unit
            flag_values: no_continental_ice continental_ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_water
            name: altimeter water/dry flag
            data: bit 4
            units: no_unit
            flag_values: open_ocean_or_enclosed_sea_or_lake land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: flag_ocean
            name: altimeter ocean/land flag
            data: bit 5
            units: no_unit
            flag_values: open_ocean land_or_enclosed_sea_or_lake
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type_rad
            name: radiometer land flag
            data: bit 6
            units: no_unit
            flag_values: water land
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_alt_rain_ice
            name: corruption of altimeter measurement (ice)
            data: bit 7
            units: no_unit
            flag_values: no_ice ice
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_rad_tb
            name: quality of radiometer brightness temperatures
            data: bits 9-10
            units: no_unit
            flag_masks: bad_tb_238 bad_tb_370
            plot_range: 0 to 3
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_range
            name: quality of the range estimate
            data: bit 11
            units: no_unit
            standard_name: altimeter_range status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_swh
            name: quality of the wave height estimate
            data: bit 12
            units: no_unit
            standard_name: sea_surface_wave_significant_height status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_sig0
            name: quality of the backscatter coefficient estimate
            data: bit 13
            units: no_unit
            standard_name: surface_backwards_scattering_coefficient_of_radar_wave status_flag
            flag_values: ok suspect
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: qual_orbit
            name: quality of the orbit determination
            data: bit 15
            units: no_unit
            standard_name: height_above_reference_ellipsoid status_flag
            flag_values: ok degraded
            plot_range: 0 to 1
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_type
            name: surface type
            data: surface_type
            units: no_unit
            source: GSHHG 2.3.7 coastlines
            flag_values: open_ocean unused enclosed_sea_or_lake land continental_ice
            plot_range: 0 to 4
            format: 1x
            compress:
                type: int8
        variable:
            id: surface_class
            name: surface classification
            data: surface_class
            units: no_unit
            comment: Computed from a mask built with MODIS and GlobCover data
            flag_values: open_ocean land continental_water aquatic_vegetation continental_ice_snow floating_ice salted_basin
            plot_range: 0 to 6
            format: 1x
            compress:
                type: int8
        variable:
            id: flags
            name: flag word
            data: flags
            units: no_unit
            flag_masks: not_used not_used continental_ice not_used alt_land alt_non_ocean rad_land alt_rain_or_ice not_used tb2_bad tb3_bad range_suspect swh_suspect backscatter_suspect not_used orbit_degraded
            limits: 65512 to 0
            format: 016b
            compress:
                type: int16
        variable:
            id: swh_rms_norm
            name: normalized std dev of significant wave height
            data: swh_rms range_numval 1 SUB SQRT DIV
            units: m
            limits: 0.0 to 2.1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: swh_rms_ka
            name: std dev of Ka-band significant wave height
            data: swh_rms_ka
            units: m
            comment: Based on valid high-rate measurements
            limits: 0.0 to 2.1
            plot_range: 0.2 to 1.0
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: sig0_rms_norm
            name: normalized std dev of backscatter coefficient
            data: sig0_rms range_numval 1 SUB SQRT DIV
            units: no_unit
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: sig0_rms_ka
            name: std dev of Ka-band backscatter coefficient
            data: sig0_rms_ka
            units: no_unit
            comment: Based on valid high-rate measurements
            limits: 0.0 to 1.0
            plot_range: 0.0 to 0.5
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 0
        variable:
            id: off_nadir_angle2_wf_ka
            name: off-nadir pointing angle squared from waveform
            data: off_nadir_angle2_wf_ka
            units: degrees^2
            plot_range: -0.04 to 0.08
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: dsig0_atmos_ka
            name: Ka-band backscatter coefficient correction due to atmosphere/attitude
            data: dsig0_atmos_ka
            units: no_unit
            comment: Correction already added to backscatter coefficient
            plot_range: 0 to 1
            format: 5.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dsig0_atmos_nn_ka
            name: Ka-band backscatter coefficient correction due to atmosphere/attitude (NN)
            data: dsig0_atmos_nn_ka
            units: no_unit
            comment: Alternative to dsig0_atmos_ka which is already applied
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dsig0_atmos_gfs_ka
            name: Ka-band backscatter coefficient correction due to atmosphere/attitude (GFS)
            data: dsig0_atmos_gfs_ka
            units: no_unit
            comment: Alternative to dsig0_atmos_ka which is already applied
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
            default: 1.01
        variable:
            id: liquid_water_rad
            name: radiometer liquid water content
            data: liquid_water_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: liquid_water_gfs
            name: NOAA/GFS liquid water content
            data: liquid_water_gfs
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_cloud_liquid_water
            source: NOAA Global Forecast System
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: water_vapor_rad
            name: radiometer water vapor content
            data: water_vapor_rad
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            plot_range: 0 to 70
            format: 6.1f
            compress:
                type: int16
                scale_factor: 0.1
            default: 0
        variable:
            id: water_vapor_content_gfs
            name: NOAA/GFS water vapor content
            data: water_vapor_content_gfs
            units: kg/m^2
            standard_name: atmosphere_mass_content_of_water_vapor
            source: NOAA Global Forecast System
            plot_range: 0 to 70
            format: 6.2f
            compress:
                type: int16
                scale_factor: 0.01
            default: 0
        variable:
            id: basin
            name: basin code
            data: basin
            units: 1
            format: 3.0f
            compress:
                type: int8
        variable:
            id: ref_frame_offset
            name: reference frame offset
            data: ref_frame_offset
            units: m
            dimensions: 0
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
            default: 0
        variable:
            id: tide_equil
            name: long-period equilibrium ocean tide
            data: tide_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_equilibrium_ocean_tide
            comment: The long-period equilibrium ocean tide is included in the ocean tide values of the GOT and FES tide models
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_non_equil
            name: long-period non-equilibrium ocean tide
            data: tide_non_equil
            units: m
            standard_name: sea_surface_height_amplitude_due_to_non_equilibrium_ocean_tide
            comment: The long-period non-equilibrium ocean tide results from the corresponding FES tide model and is included in the FES ocean tide value
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: tide_lunar_nodal
            name: nodal lunar ocean tide
            data: time 6.128907968287e-07 MUL 55.151702881 SUB 360 FMOD COSD lat SIND SQR 1.5 MUL 0.5 SUB MUL 0.01220911657 MUL
            units: m
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: wave_m0
            name: WaveWatch3 wave height variance
            data: wave_m0
            units: m^2
            source: WaveWatch3
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_m1
            name: WaveWatch3 first moment of wave height
            data: wave_m1
            units: m^2/s
            source: WaveWatch3
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: wave_m2
            name: WaveWatch3 wave velocity variance
            data: wave_m2
            units: m^2/s^2
            source: WaveWatch3
            format: 8.5f
            compress:
                type: int16
                scale_factor: 1e-05
        variable:
            id: wave_m4
            name: WaveWatch3 wave slope variance
            data: wave_m4
            units: radian^2
            source: WaveWatch3
            format: 9.6f
            compress:
                type: int16
                scale_factor: 1e-06
        variable:
            id: wave_shs
            name: WaveWatch3 wave swell height
            data: wave_shs
            units: m
            standard_name: sea_surface_swell_wave_significant_height
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wu
            name: WaveWatch3 zonal wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_wv
            name: WaveWatch3 meridional wind speed
            data: wave_wu
            units: m/s
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_spr
            name: WaveWatch3 wave swell period
            data: wave_spr
            units: s
            standard_name: sea_surface_swell_wave_period
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: wave_sdr
            name: WaveWatch3 wave swell direction
            data: wave_sdr
            units: radian
            standard_name: sea_surface_swell_wave_to_direction
            source: WaveWatch3
            format: 6.3f
            compress:
                type: int16
                scale_factor: 0.001
        variable:
            id: dist_coast
            name: distance to coast
            data: dist_coast
            units: km
            source: GMT/GSHHS
            comment: Negative numbers are inland, positive numbers are offshore
            format: 6.0f
            compress:
                type: int16
        variable:
            id: prox_coast
            name: coastal proximity parameter
            data: prox_coast
            units: no_unit
            source: NOC Southampton
            comment: Dimensionless measure of the effect of land over altimetric waveforms, where -1 means unaffected by land (open-ocean) and 1 means totally affected by land (inland); can be used for screening purposes in place of distance from coast
            format: 4.2f
            compress:
                type: int8
                scale_factor: 0.01
        variable:
            id: seaice_conc
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 3.0f
            compress:
                type: int8
        variable:
            id: seaice_conc_osiaf
            name: sea ice concentration
            data: seaice_conc
            units: %
            standard_name: sea_ice_area_fraction
            source: OSIAF sea ice concentration
            format: 3.0f
            compress:
                type: int8
        variable:
            id: sst
            name: sea surface temperature
            data: sst
            units: degC
            standard_name: sea_surface_temperature
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: sst_mean
            name: local mean sea surface temperature
            data: sst_mean
            units: degC
            source: NOAA Optimal Interpolation Sea Surface Temperature v2
            format: 5.2f
            compress:
                type: int16
                scale_factor: 0.01
        variable:
            id: dry_tropo_airtide
            name: air tide correction to the dry tropospheric correction
            data: dry_tropo_airtide
            units: m
            comment: Add to dry tropospheric correction to account for missing S1 and S2 tidal signal
            format: 7.4f
            compress:
                type: int8
                scale_factor: 0.0001
        variable:
            id: mss_annual
            name: annual variation of mean sea level
            data: mss_annual
            units: m
            source: DTU10
            comment: Annual variation of sea level with respect to long-term mean sea level
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: gia
            name: GIA correction
            data: gia
            units: m
            source: ICE5G v1.3 VM2 L90 2012
            comment: Change of land elevation relative to geoid due to GIA since 1 Jan 2000
            format: 7.4f
            compress:
                type: int16
                scale_factor: 0.0001
        variable:
            id: first_meas_time
            name: time of first measurement in pass
            data: :first_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: last_meas_time
            name: time of last measurement in pass
            data: :last_meas_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqtime
            name: time of equator crossing
            data: :equator_time
            units: seconds since 1985-01-01
            format: 17.6f
        variable:
            id: eqlon
            name: longitude of equator crossing
            data: :equator_longitude
            units: degrees_east
            format: 11.6f
        variable:
            id: cycle
            name: cycle number
            data: :cycle_number
            units: no_unit
            format: 4.0f
            compress:
                type: int16
        variable:
            id: pass
            name: pass number
            data: :pass_number
            units: no_unit
            format: 5.0f
            compress:
                type: int16