{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "797cbf3b-adab-4bbc-b1f4-6af5f87c8033",
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import xarray as xr\n",
    "import matplotlib.pyplot as plt\n",
    "\n",
    "import dlmhelper.tools\n",
    "import dlmhelper.data"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5f7aa73e-7115-4764-bd95-969b554cc5f7",
   "metadata": {},
   "source": [
    "The TCCON data is available from [https://data.caltech.edu/records/3t5by-f7e05](https://data.caltech.edu/records/3t5by-f7e05)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 69,
   "id": "89654fa7-9266-4dcb-baa6-5df59e0cb9d6",
   "metadata": {},
   "outputs": [],
   "source": [
    "path_in = \"/path/to/ny20050314_20210919.public.qc.nc\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "c661b280-8d40-4053-8cc7-b0654847f6b0",
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       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
       "Dimensions:                                       (time: 108615,\n",
       "                                                   prior_altitude: 51,\n",
       "                                                   ak_altitude: 51)\n",
       "Coordinates:\n",
       "  * time                                          (time) datetime64[ns] 2005-...\n",
       "  * prior_altitude                                (prior_altitude) float32 0....\n",
       "  * ak_altitude                                   (ak_altitude) float32 0.0 ....\n",
       "Data variables: (12/75)\n",
       "    prior_time                                    (time) datetime64[ns] ...\n",
       "    ak_pressure                                   (ak_altitude) float32 ...\n",
       "    ak_xco2                                       (time, ak_altitude) float32 ...\n",
       "    extrapolation_flags_ak_xco2                   (time) int8 ...\n",
       "    ak_xwco2                                      (time, ak_altitude) float32 ...\n",
       "    extrapolation_flags_ak_xwco2                  (time) int8 ...\n",
       "    ...                                            ...\n",
       "    xlco2_error_experimental                      (time) float32 ...\n",
       "    xwco2_experimental                            (time) float32 ...\n",
       "    xwco2_error_experimental                      (time) float32 ...\n",
       "    xco2                                          (time) float32 ...\n",
       "    xco2_error                                    (time) float32 ...\n",
       "    airmass                                       (time) float32 ...\n",
       "Attributes: (12/16)\n",
       "    source:                      Products retrieved from solar absorption spe...\n",
       "    description:                 \\nCarbon Dioxide Dry Column-Averaged Mixing ...\n",
       "    file_creation:               Created with Python 3.7.3; the library netCD...\n",
       "    title:                       Atmospheric trace gas column-average dry-air...\n",
       "    data_use_policy:             https://tccon-wiki.caltech.edu/Network_Polic...\n",
       "    auxiliary_data_description:  https://tccon-wiki.caltech.edu/Network_Polic...\n",
       "    ...                          ...\n",
       "    location:                    Ny-Ålesund, Svalbard, Norway\n",
       "    contact:                     Matthias Buschmann &lt;m_buschmann@iup.physik.u...\n",
       "    site_reference:              \n",
       "    data_doi:                    10.14291/tccon.ggg2020.nyalesund01.R0\n",
       "    data_reference:              M. Buschmann, C. Petri, M. Palm, T. Warneke,...\n",
       "    data_revision:               R0</pre><div class='xr-wrap' style='display:none'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-b15cc208-a5c2-46c1-a2d1-363dbaf9a00d' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-b15cc208-a5c2-46c1-a2d1-363dbaf9a00d' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>time</span>: 108615</li><li><span class='xr-has-index'>prior_altitude</span>: 51</li><li><span class='xr-has-index'>ak_altitude</span>: 51</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-761a200d-838a-4d0f-967f-9cc3eb381137' class='xr-section-summary-in' type='checkbox'  checked><label for='section-761a200d-838a-4d0f-967f-9cc3eb381137' class='xr-section-summary' >Coordinates: <span>(3)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>time</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>datetime64[ns]</div><div class='xr-var-preview xr-preview'>2005-03-16T07:49:11.711999872 .....</div><input id='attrs-40bbc1c3-8ce1-4352-b8d9-23d991909331' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-40bbc1c3-8ce1-4352-b8d9-23d991909331' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1a3ea543-3cf2-4824-888d-4ff818b51994' class='xr-var-data-in' type='checkbox'><label for='data-1a3ea543-3cf2-4824-888d-4ff818b51994' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>standard_name :</span></dt><dd>time</dd><dt><span>long_name :</span></dt><dd>time</dd><dt><span>description :</span></dt><dd>UTC time</dd></dl></div><div class='xr-var-data'><pre>array([&#x27;2005-03-16T07:49:11.711999872&#x27;, &#x27;2005-03-16T07:49:36.767999872&#x27;,\n",
       "       &#x27;2005-03-16T07:50:13.920000128&#x27;, ..., &#x27;2021-04-26T13:22:05.664000000&#x27;,\n",
       "       &#x27;2021-04-26T13:25:31.296000000&#x27;, &#x27;2021-04-26T13:29:18.528000000&#x27;],\n",
       "      dtype=&#x27;datetime64[ns]&#x27;)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>prior_altitude</span></div><div class='xr-var-dims'>(prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>0.0 0.42 0.88 ... 65.28 67.62 70.0</div><input id='attrs-b0bcb93c-58c9-42f5-ac9a-1a569d4b1cfa' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b0bcb93c-58c9-42f5-ac9a-1a569d4b1cfa' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-4e2947c2-ce85-4fb7-b0b4-c4e30d3fbe7f' class='xr-var-data-in' type='checkbox'><label for='data-4e2947c2-ce85-4fb7-b0b4-c4e30d3fbe7f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior altitude profile</dd><dt><span>units :</span></dt><dd>km</dd><dt><span>description :</span></dt><dd>altitude levels for the prior profiles, these are the same for all the priors</dd><dt><span>standard_name :</span></dt><dd>altitude</dd></dl></div><div class='xr-var-data'><pre>array([ 0.  ,  0.42,  0.88,  1.38,  1.92,  2.5 ,  3.12,  3.78,  4.48,  5.22,\n",
       "        6.  ,  6.82,  7.68,  8.58,  9.52, 10.5 , 11.52, 12.58, 13.68, 14.82,\n",
       "       16.  , 17.22, 18.48, 19.78, 21.12, 22.5 , 23.92, 25.38, 26.88, 28.42,\n",
       "       30.  , 31.62, 33.28, 34.98, 36.72, 38.5 , 40.32, 42.18, 44.08, 46.02,\n",
       "       48.  , 50.02, 52.08, 54.18, 56.32, 58.5 , 60.72, 62.98, 65.28, 67.62,\n",
       "       70.  ], dtype=float32)</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>ak_altitude</span></div><div class='xr-var-dims'>(ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>0.0 0.42 0.88 ... 65.28 67.62 70.0</div><input id='attrs-314aa976-4059-43b1-ac1f-b7f71b76a08e' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-314aa976-4059-43b1-ac1f-b7f71b76a08e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-347db7ec-1dfe-4722-9024-3afb4989c2fc' class='xr-var-data-in' type='checkbox'><label for='data-347db7ec-1dfe-4722-9024-3afb4989c2fc' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>averaging kernel altitude levels</dd><dt><span>description :</span></dt><dd>Altitude levels for column averaging kernels</dd><dt><span>units :</span></dt><dd>km</dd><dt><span>standard_name :</span></dt><dd>altitude</dd></dl></div><div class='xr-var-data'><pre>array([ 0.  ,  0.42,  0.88,  1.38,  1.92,  2.5 ,  3.12,  3.78,  4.48,  5.22,\n",
       "        6.  ,  6.82,  7.68,  8.58,  9.52, 10.5 , 11.52, 12.58, 13.68, 14.82,\n",
       "       16.  , 17.22, 18.48, 19.78, 21.12, 22.5 , 23.92, 25.38, 26.88, 28.42,\n",
       "       30.  , 31.62, 33.28, 34.98, 36.72, 38.5 , 40.32, 42.18, 44.08, 46.02,\n",
       "       48.  , 50.02, 52.08, 54.18, 56.32, 58.5 , 60.72, 62.98, 65.28, 67.62,\n",
       "       70.  ], dtype=float32)</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-bd5aa0ca-ef93-4dd9-b15a-a2792a2bb6c6' class='xr-section-summary-in' type='checkbox'  ><label for='section-bd5aa0ca-ef93-4dd9-b15a-a2792a2bb6c6' class='xr-section-summary' >Data variables: <span>(75)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>prior_time</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>datetime64[ns]</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-88f2cd32-f721-4fcf-9ed2-2e71016bed81' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-88f2cd32-f721-4fcf-9ed2-2e71016bed81' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-cac68fd2-358d-4b25-9500-d7e472b9733e' class='xr-var-data-in' type='checkbox'><label for='data-cac68fd2-358d-4b25-9500-d7e472b9733e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior time</dd><dt><span>description :</span></dt><dd>UTC time for the prior profiles, corresponds to GEOS5 times every 3 hours from 0 to 21</dd><dt><span>standard_name :</span></dt><dd>time</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=datetime64[ns]]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_pressure</span></div><div class='xr-var-dims'>(ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-1ddb07a1-90ce-432f-b002-0b543b0d71de' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1ddb07a1-90ce-432f-b002-0b543b0d71de' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b1de68fa-07d7-404d-b9a2-f6577650f51e' class='xr-var-data-in' type='checkbox'><label for='data-b1de68fa-07d7-404d-b9a2-f6577650f51e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>averaging kernel pressure levels</dd><dt><span>description :</span></dt><dd>Median pressure for the column averaging kernels vertical grid</dd><dt><span>units :</span></dt><dd>hPa</dd><dt><span>standard_name :</span></dt><dd>air_pressure</dd></dl></div><div class='xr-var-data'><pre>[51 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xco2</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-1b17661e-93e2-4058-b12b-ca4696128d51' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1b17661e-93e2-4058-b12b-ca4696128d51' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1aaf5037-20e1-487c-b31a-7d45beabf4bd' class='xr-var-data-in' type='checkbox'><label for='data-1aaf5037-20e1-487c-b31a-7d45beabf4bd' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xco2 column averaging kernel</dd><dt><span>description :</span></dt><dd>xco2 column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xco2</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xco2</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-901ed3e0-80a5-474a-9976-2ff563a62d95' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-901ed3e0-80a5-474a-9976-2ff563a62d95' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2392a6a0-2f5f-4298-8e59-09537d96e1f8' class='xr-var-data-in' type='checkbox'><label for='data-2392a6a0-2f5f-4298-8e59-09537d96e1f8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xwco2</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-ddf0d5ed-e086-4848-91a8-0add00989d35' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ddf0d5ed-e086-4848-91a8-0add00989d35' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d0d1226a-e56d-4066-a00a-bf368b97eafe' class='xr-var-data-in' type='checkbox'><label for='data-d0d1226a-e56d-4066-a00a-bf368b97eafe' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xwco2 column averaging kernel</dd><dt><span>description :</span></dt><dd>xwco2 column averaging kernels.  wco2 is the weak CO2 band centered at 6073.5 and does not contribute to the xco2 calculation.</dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xwco2</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xwco2</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-f72935ca-0228-4a53-a2f3-ea0f2a559c41' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f72935ca-0228-4a53-a2f3-ea0f2a559c41' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c417ca97-3d40-400c-a364-258ef791c017' class='xr-var-data-in' type='checkbox'><label for='data-c417ca97-3d40-400c-a364-258ef791c017' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xlco2</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-ba9c0f5f-3a49-4651-ada6-d45a1659697a' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ba9c0f5f-3a49-4651-ada6-d45a1659697a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ab7a7fda-5acf-4b26-a9c4-7ee8beb5425c' class='xr-var-data-in' type='checkbox'><label for='data-ab7a7fda-5acf-4b26-a9c4-7ee8beb5425c' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xlco2 column averaging kernel</dd><dt><span>description :</span></dt><dd>xlco2 column averaging kernels.  lco2 is the strong CO2 band centered at 4852.87 cm-1 and does not contribute to the xco2 calculation.</dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xlco2</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xlco2</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-f5d6dd64-e2ba-40f2-a309-73d3f8190012' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f5d6dd64-e2ba-40f2-a309-73d3f8190012' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-469ec098-0c7e-4c95-a7cd-bfb6b6dc3a71' class='xr-var-data-in' type='checkbox'><label for='data-469ec098-0c7e-4c95-a7cd-bfb6b6dc3a71' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xch4</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-47749b2a-9d82-42d6-ba0e-2e70318f9742' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-47749b2a-9d82-42d6-ba0e-2e70318f9742' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-dcfa1f04-c81b-4b26-80b8-ee44b3a73444' class='xr-var-data-in' type='checkbox'><label for='data-dcfa1f04-c81b-4b26-80b8-ee44b3a73444' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xch4 column averaging kernel</dd><dt><span>description :</span></dt><dd>xch4 column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xch4</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xch4</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-feedd32c-8d59-4226-acb5-a45279a00772' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-feedd32c-8d59-4226-acb5-a45279a00772' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2d5e2f32-6e8a-488c-83a5-7f8a05d7d3c5' class='xr-var-data-in' type='checkbox'><label for='data-2d5e2f32-6e8a-488c-83a5-7f8a05d7d3c5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xhf</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-573adb8f-89ef-424a-820a-206a32d83903' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-573adb8f-89ef-424a-820a-206a32d83903' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-bff6b5dc-8d99-4251-953c-e1e89bea159b' class='xr-var-data-in' type='checkbox'><label for='data-bff6b5dc-8d99-4251-953c-e1e89bea159b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xhf column averaging kernel</dd><dt><span>description :</span></dt><dd>xhf column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xhf</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xhf</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-d9c1dcda-faea-4273-b432-2767ecd868ba' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d9c1dcda-faea-4273-b432-2767ecd868ba' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d2d4f183-7d37-44db-ba76-0ec4e88b3bc5' class='xr-var-data-in' type='checkbox'><label for='data-d2d4f183-7d37-44db-ba76-0ec4e88b3bc5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xo2</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-a0ef0386-48ec-4f76-ab2f-32c43d994533' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a0ef0386-48ec-4f76-ab2f-32c43d994533' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a675ccaa-c88a-4e8b-a897-47989d74b37c' class='xr-var-data-in' type='checkbox'><label for='data-a675ccaa-c88a-4e8b-a897-47989d74b37c' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xo2 column averaging kernel</dd><dt><span>description :</span></dt><dd>xo2 column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xo2</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xo2</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-a62e5c8b-9d4c-453b-9dd3-ed5e0a89557f' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a62e5c8b-9d4c-453b-9dd3-ed5e0a89557f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-22df66bc-1693-4ae8-860d-03d9b7d8cd12' class='xr-var-data-in' type='checkbox'><label for='data-22df66bc-1693-4ae8-860d-03d9b7d8cd12' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xn2o</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-c5e9ad1b-8771-447b-a6de-58806cd0a996' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-c5e9ad1b-8771-447b-a6de-58806cd0a996' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7e0fb36d-6957-434f-b7f0-2ee9440536b9' class='xr-var-data-in' type='checkbox'><label for='data-7e0fb36d-6957-434f-b7f0-2ee9440536b9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xn2o column averaging kernel</dd><dt><span>description :</span></dt><dd>xn2o column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xn2o</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xn2o</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-51906c7e-bc5d-4db9-9150-f996a4ef82f1' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-51906c7e-bc5d-4db9-9150-f996a4ef82f1' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-cbae7d9e-f1f2-4443-b365-b48129345cdd' class='xr-var-data-in' type='checkbox'><label for='data-cbae7d9e-f1f2-4443-b365-b48129345cdd' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xco</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-d5c23b3a-5c76-4144-9d51-7afd9623ba96' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d5c23b3a-5c76-4144-9d51-7afd9623ba96' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-58c19259-2818-4dcb-8f2f-4460d0cb3138' class='xr-var-data-in' type='checkbox'><label for='data-58c19259-2818-4dcb-8f2f-4460d0cb3138' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xco column averaging kernel</dd><dt><span>description :</span></dt><dd>xco column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xco</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xco</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-ac714d71-b2fb-4485-a7af-00b0d80d8743' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ac714d71-b2fb-4485-a7af-00b0d80d8743' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ef07f60d-7e64-4c3b-a21d-13f23e81ce98' class='xr-var-data-in' type='checkbox'><label for='data-ef07f60d-7e64-4c3b-a21d-13f23e81ce98' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>ak_xh2o</span></div><div class='xr-var-dims'>(time, ak_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-26d8d3e9-3aad-4eb5-a483-b186f705c570' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-26d8d3e9-3aad-4eb5-a483-b186f705c570' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8b95d661-57f2-4451-9fd7-5870417c5977' class='xr-var-data-in' type='checkbox'><label for='data-8b95d661-57f2-4451-9fd7-5870417c5977' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xh2o column averaging kernel</dd><dt><span>description :</span></dt><dd>xh2o column averaging kernels. </dd><dt><span>units :</span></dt><dd>1</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for instructions on how to use the AK variables.</dd><dt><span>ancillary_variables :</span></dt><dd>extrapolation_flags_ak_xh2o</dd><dt><span>standard_name :</span></dt><dd>averaging_kernel</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>extrapolation_flags_ak_xh2o</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int8</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-6db35d41-6394-4350-a753-2ed56896a646' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6db35d41-6394-4350-a753-2ed56896a646' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9256e6af-ddf6-4a75-9d0f-9ce63abd091a' class='xr-var-data-in' type='checkbox'><label for='data-9256e6af-ddf6-4a75-9d0f-9ce63abd091a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>flag_values :</span></dt><dd>[-2 -1  0  1  2]</dd><dt><span>flag_meanings :</span></dt><dd>clamped_to_min_slant_xgas\n",
       "extrapolated_below_lowest_slant_xgas_bin\n",
       "interpolated_normally\n",
       "extrapolated_above_largest_slant_xgas_bin\n",
       "clamped_to_max_slant_xgas</dd><dt><span>usage :</span></dt><dd>Please see https://tccon-wiki.caltech.edu/Main/GGG2020DataChanges for more information</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int8]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_temperature</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-49dc38a4-b574-4628-ba84-24754c33ca60' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-49dc38a4-b574-4628-ba84-24754c33ca60' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b2b4d1b7-8776-4cc4-b752-0e78b2b15474' class='xr-var-data-in' type='checkbox'><label for='data-b2b4d1b7-8776-4cc4-b752-0e78b2b15474' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior temperature profile</dd><dt><span>description :</span></dt><dd>prior temperature profile</dd><dt><span>units :</span></dt><dd>degrees_Kelvin</dd><dt><span>standard_name :</span></dt><dd>air_temperature</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_pressure</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-6f0b07ac-49e1-4f69-acf3-b7727be95139' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6f0b07ac-49e1-4f69-acf3-b7727be95139' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-656cba1e-a5f9-4259-ac50-9f4e7e6c4077' class='xr-var-data-in' type='checkbox'><label for='data-656cba1e-a5f9-4259-ac50-9f4e7e6c4077' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior pressure profile</dd><dt><span>description :</span></dt><dd>prior pressure profile</dd><dt><span>units :</span></dt><dd>atm</dd><dt><span>standard_name :</span></dt><dd>air_pressure</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_density</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-d7d26632-ad90-40f0-9d61-600465519a9c' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d7d26632-ad90-40f0-9d61-600465519a9c' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-fd462d6b-c26a-4922-9cef-b334ffc570f1' class='xr-var-data-in' type='checkbox'><label for='data-fd462d6b-c26a-4922-9cef-b334ffc570f1' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior density profile</dd><dt><span>description :</span></dt><dd>prior density profile</dd><dt><span>units :</span></dt><dd>molecules.cm-3</dd><dt><span>note :</span></dt><dd>This is the ideal number density for the temperature and pressure at each model level. GGG assumes that this includes water, and so multiplies this by wet mole fractions of trace gases to get those gases&#x27; number densities.</dd><dt><span>standard_name :</span></dt><dd>number_concentration_of_air</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_h2o</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-4f017df0-39d0-47b6-8a2c-49d0b24c074a' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-4f017df0-39d0-47b6-8a2c-49d0b24c074a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-608fc439-65ba-460a-8f74-c8293735c6e1' class='xr-var-data-in' type='checkbox'><label for='data-608fc439-65ba-460a-8f74-c8293735c6e1' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1h2o profile</dd><dt><span>description :</span></dt><dd>a priori profile of h2o</dd><dt><span>units :</span></dt><dd></dd><dt><span>long_units :</span></dt><dd>parts (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet).</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_water</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_co2</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-a8a24d0e-158c-4aeb-bafa-b25ad3543596' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a8a24d0e-158c-4aeb-bafa-b25ad3543596' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e9b1ff59-2e57-4946-a9d2-436a41a6fd4b' class='xr-var-data-in' type='checkbox'><label for='data-e9b1ff59-2e57-4946-a9d2-436a41a6fd4b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1co2 profile</dd><dt><span>description :</span></dt><dd>a priori profile of co2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>long_units :</span></dt><dd>parts per million (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_carbon_dioxide</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_n2o</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-f1a63de2-4cae-4964-a338-e8e2fc7c1b76' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f1a63de2-4cae-4964-a338-e8e2fc7c1b76' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c679aef3-239b-4a88-ae31-84fa66c58245' class='xr-var-data-in' type='checkbox'><label for='data-c679aef3-239b-4a88-ae31-84fa66c58245' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1n2o profile</dd><dt><span>description :</span></dt><dd>a priori profile of n2o</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>long_units :</span></dt><dd>parts per billion (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_nitrous_oxide</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_co</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-6207c278-abd8-4c71-b3ea-5e20048ed326' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6207c278-abd8-4c71-b3ea-5e20048ed326' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b0f89e28-8a19-4512-b6a2-129dab32663b' class='xr-var-data-in' type='checkbox'><label for='data-b0f89e28-8a19-4512-b6a2-129dab32663b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1co profile</dd><dt><span>description :</span></dt><dd>a priori profile of co</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>long_units :</span></dt><dd>parts per billion (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_carbon_monoxide</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_ch4</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-1698d5d9-6897-4e5f-9735-27be25b07d0f' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1698d5d9-6897-4e5f-9735-27be25b07d0f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-607d3988-dbfe-4579-a65d-4a5fd16670aa' class='xr-var-data-in' type='checkbox'><label for='data-607d3988-dbfe-4579-a65d-4a5fd16670aa' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1ch4 profile</dd><dt><span>description :</span></dt><dd>a priori profile of ch4</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>long_units :</span></dt><dd>parts per billion (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_methane</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_o2</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-5bdd8a79-516e-4a3b-ad3b-6fc9f272c064' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-5bdd8a79-516e-4a3b-ad3b-6fc9f272c064' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d50f3753-34cc-448e-9c3e-a22f6539dcca' class='xr-var-data-in' type='checkbox'><label for='data-d50f3753-34cc-448e-9c3e-a22f6539dcca' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1o2 profile</dd><dt><span>description :</span></dt><dd>a priori profile of o2</dd><dt><span>units :</span></dt><dd></dd><dt><span>long_units :</span></dt><dd>parts (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_oxygen</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_hf</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-5556c67d-cfb8-4626-8d69-f5324b7ee3c0' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-5556c67d-cfb8-4626-8d69-f5324b7ee3c0' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-01f6000d-4dd3-4abd-ad88-fcc79afda977' class='xr-var-data-in' type='checkbox'><label for='data-01f6000d-4dd3-4abd-ad88-fcc79afda977' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1hf profile</dd><dt><span>description :</span></dt><dd>a priori profile of hf</dd><dt><span>units :</span></dt><dd>ppt</dd><dt><span>long_units :</span></dt><dd>parts per trillion (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_hydrogen_fluoride</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_hdo</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-e12674ee-4939-4a99-9d52-8691c655cd06' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-e12674ee-4939-4a99-9d52-8691c655cd06' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e97380d4-e691-4b8c-83dd-b6690c05b1c6' class='xr-var-data-in' type='checkbox'><label for='data-e97380d4-e691-4b8c-83dd-b6690c05b1c6' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior 1hdo profile</dd><dt><span>description :</span></dt><dd>a priori profile of hdo</dd><dt><span>units :</span></dt><dd></dd><dt><span>long_units :</span></dt><dd>parts (wet mole fraction)</dd><dt><span>note :</span></dt><dd>Prior VMRs are given in wet mole fractions. To convert to dry mole fractions, you must calculate H2O_dry = H2O_wet/(1 - H2O_wet) and then gas_dry = gas_wet * (1 + H2O_dry), where H2O_wet is the prior_h2o variable. (Be sure to convert the H2O and gas priors to compatible units.)</dd><dt><span>standard_name :</span></dt><dd>wet_atmosphere_mole_fraction_of_semiheavy_water</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_gravity</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-196599e3-df88-40ef-9b09-e5e793a0e312' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-196599e3-df88-40ef-9b09-e5e793a0e312' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c8866d92-fd18-47e1-a2e0-1494af16b1f7' class='xr-var-data-in' type='checkbox'><label for='data-c8866d92-fd18-47e1-a2e0-1494af16b1f7' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior gravity profile</dd><dt><span>description :</span></dt><dd>prior gravity profile</dd><dt><span>units :</span></dt><dd>m.s-2</dd><dt><span>standard_name :</span></dt><dd>gravity</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_equivalent_latitude</span></div><div class='xr-var-dims'>(time, prior_altitude)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-a7863739-71d9-499e-96ca-ebfa457f9f86' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a7863739-71d9-499e-96ca-ebfa457f9f86' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-35752c2b-9140-4b9a-953e-dc88fa00bf21' class='xr-var-data-in' type='checkbox'><label for='data-35752c2b-9140-4b9a-953e-dc88fa00bf21' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior equivalent latitude profile</dd><dt><span>description :</span></dt><dd>prior equivalent latitude profile</dd><dt><span>units :</span></dt><dd>degrees_north</dd><dt><span>standard_name :</span></dt><dd>equivalent_latitude_derived_from_potential_vorticity</dd></dl></div><div class='xr-var-data'><pre>[5539365 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_tropopause_altitude</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-8e7726ae-3bf7-4420-bc82-f10e764d9c9d' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-8e7726ae-3bf7-4420-bc82-f10e764d9c9d' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-4dcd9e35-4cfe-48a0-b6f9-2af49e3cffb4' class='xr-var-data-in' type='checkbox'><label for='data-4dcd9e35-4cfe-48a0-b6f9-2af49e3cffb4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior tropopause altitude</dd><dt><span>description :</span></dt><dd>altitude at which the gradient in the prior temperature profile becomes &gt; -2 degrees per km</dd><dt><span>units :</span></dt><dd>km</dd><dt><span>standard_name :</span></dt><dd>altitude</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_effective_latitude</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-2f923d7d-5b85-4298-b340-e19e454b4ff2' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-2f923d7d-5b85-4298-b340-e19e454b4ff2' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-59b0f730-6f00-4aa9-bcd9-80d4b3acf983' class='xr-var-data-in' type='checkbox'><label for='data-59b0f730-6f00-4aa9-bcd9-80d4b3acf983' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>prior effective latitude</dd><dt><span>description :</span></dt><dd>latitude at which the mid-tropospheric potential temperature agrees with that from the corresponding 2-week period in a GEOS-FPIT climatology</dd><dt><span>units :</span></dt><dd>degrees_north</dd><dt><span>standard_name :</span></dt><dd>effective_latitude_derived_from_mid_troposphere_potential_temperature</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>prior_mid_tropospheric_potential_temperature</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-8ecb153d-735c-4408-965b-f255d66a57af' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-8ecb153d-735c-4408-965b-f255d66a57af' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e0dd171b-8c27-4ced-adca-9da68934a81d' class='xr-var-data-in' type='checkbox'><label for='data-e0dd171b-8c27-4ced-adca-9da68934a81d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>standard_name :</span></dt><dd>prior_mid_tropospheric_potential_temperature</dd><dt><span>long_name :</span></dt><dd>prior mid-tropospheric potential temperature</dd><dt><span>description :</span></dt><dd>average potential temperature between 700-500 hPa</dd><dt><span>units :</span></dt><dd>degrees_Kelvin</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>gfit_version</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-b9a773ce-91ed-46bc-932b-ecc01ba71911' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b9a773ce-91ed-46bc-932b-ecc01ba71911' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8fa3169a-39bb-41ca-af27-82c7e3b41d8b' class='xr-var-data-in' type='checkbox'><label for='data-8fa3169a-39bb-41ca-af27-82c7e3b41d8b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>version number of the GFIT code that generated the data</dd><dt><span>long_name_dict :</span></dt><dd>gfit version</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>gsetup_version</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-66655734-fb06-4994-9c42-8f0ba83b7ad2' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-66655734-fb06-4994-9c42-8f0ba83b7ad2' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7d52bf55-e34c-428e-907d-da737d2da3f4' class='xr-var-data-in' type='checkbox'><label for='data-7d52bf55-e34c-428e-907d-da737d2da3f4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>version number of the GSETUP code that generated the priors</dd><dt><span>long_name :</span></dt><dd>gsetup version</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>year</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>int16</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-c20247bd-b927-47d0-aa69-22431d47bebb' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-c20247bd-b927-47d0-aa69-22431d47bebb' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-0c3e9ca3-25ec-444a-830f-27d9b93c3a17' class='xr-var-data-in' type='checkbox'><label for='data-0c3e9ca3-25ec-444a-830f-27d9b93c3a17' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Year (e.g. (2009)</dd><dt><span>units :</span></dt><dd>years</dd><dt><span>vmin :</span></dt><dd>1992.0</dd><dt><span>vmax :</span></dt><dd>2024.5</dd><dt><span>precision :</span></dt><dd>f7.0</dd><dt><span>standard_name :</span></dt><dd>year</dd><dt><span>long_name :</span></dt><dd>year</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=int16]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>day</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>timedelta64[ns]</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-2f6e120f-d61c-4a27-adbc-210f0894f6db' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-2f6e120f-d61c-4a27-adbc-210f0894f6db' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d0dc525e-7dd8-4862-8dfd-03b822d72dcf' class='xr-var-data-in' type='checkbox'><label for='data-d0dc525e-7dd8-4862-8dfd-03b822d72dcf' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Day of the year (1-366) # polar night</dd><dt><span>vmin :</span></dt><dd>43.0</dd><dt><span>vmax :</span></dt><dd>304.0</dd><dt><span>precision :</span></dt><dd>f6.0</dd><dt><span>standard_name :</span></dt><dd>day_of_year</dd><dt><span>long_name :</span></dt><dd>day of year</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=timedelta64[ns]]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>hour</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>timedelta64[ns]</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-d68eff3a-81ad-4fc9-8d0b-0a24c9706cb9' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-d68eff3a-81ad-4fc9-8d0b-0a24c9706cb9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-1f8b8186-df64-4d4c-9fe7-98b835a2ab5e' class='xr-var-data-in' type='checkbox'><label for='data-1f8b8186-df64-4d4c-9fe7-98b835a2ab5e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>vmin :</span></dt><dd>-12.0</dd><dt><span>vmax :</span></dt><dd>36.0</dd><dt><span>precision :</span></dt><dd>f8.3</dd><dt><span>standard_name :</span></dt><dd>decimal_hour</dd><dt><span>long_name :</span></dt><dd>decimal hour</dd><dt><span>description :</span></dt><dd>Fractional UT hours (zero path difference crossing time)</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=timedelta64[ns]]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>lat</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-c092c1c2-dbf7-4c9e-a02e-c8a120fc968f' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-c092c1c2-dbf7-4c9e-a02e-c8a120fc968f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ee31c66f-a616-4494-97f7-46fdd0f4eef5' class='xr-var-data-in' type='checkbox'><label for='data-ee31c66f-a616-4494-97f7-46fdd0f4eef5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Latitude (deg.)</dd><dt><span>units :</span></dt><dd>degrees_north</dd><dt><span>vmin :</span></dt><dd>78.0</dd><dt><span>vmax :</span></dt><dd>79.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>standard_name :</span></dt><dd>latitude</dd><dt><span>long_name :</span></dt><dd>latitude</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>long</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-6e58b3c0-3e38-4245-b847-8aea1d53367b' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6e58b3c0-3e38-4245-b847-8aea1d53367b' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8f3b7e0d-83de-4716-861e-a92515ad6cc4' class='xr-var-data-in' type='checkbox'><label for='data-8f3b7e0d-83de-4716-861e-a92515ad6cc4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Longitude (deg.)</dd><dt><span>units :</span></dt><dd>degrees_east</dd><dt><span>vmin :</span></dt><dd>11.0</dd><dt><span>vmax :</span></dt><dd>12.0</dd><dt><span>precision :</span></dt><dd>f9.2</dd><dt><span>standard_name :</span></dt><dd>longitude</dd><dt><span>long_name :</span></dt><dd>longitude</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>zobs</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-df0b93a2-91cd-44af-ab5f-cd3a5216e03a' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-df0b93a2-91cd-44af-ab5f-cd3a5216e03a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9019c239-967e-4691-8bbc-42be1713381e' class='xr-var-data-in' type='checkbox'><label for='data-9019c239-967e-4691-8bbc-42be1713381e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Geometric Altitude (km)</dd><dt><span>units :</span></dt><dd>km</dd><dt><span>vmin :</span></dt><dd>0.02</dd><dt><span>vmax :</span></dt><dd>0.03</dd><dt><span>precision :</span></dt><dd>f7.2</dd><dt><span>long_name :</span></dt><dd>observation altitude</dd><dt><span>standard_name :</span></dt><dd>altitude</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>zmin</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-ac9c2032-d269-4436-be38-165d2312ba33' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ac9c2032-d269-4436-be38-165d2312ba33' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7dbec632-a39c-4770-996e-f8fb971a2bae' class='xr-var-data-in' type='checkbox'><label for='data-7dbec632-a39c-4770-996e-f8fb971a2bae' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Pressure Altitude (km)</dd><dt><span>units :</span></dt><dd>km</dd><dt><span>vmin :</span></dt><dd>-0.0</dd><dt><span>vmax :</span></dt><dd>0.9</dd><dt><span>precision :</span></dt><dd>f7.2</dd><dt><span>long_name :</span></dt><dd>pressure altitude</dd><dt><span>standard_name :</span></dt><dd>altitude</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>solzen</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-cd984d36-3db6-455f-bb8d-6eff7336f59d' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-cd984d36-3db6-455f-bb8d-6eff7336f59d' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-24aeca57-f5d7-4407-9014-93c9912775e3' class='xr-var-data-in' type='checkbox'><label for='data-24aeca57-f5d7-4407-9014-93c9912775e3' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Solar Zenith Angle (deg)</dd><dt><span>units :</span></dt><dd>degrees</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>85.0</dd><dt><span>precision :</span></dt><dd>f7.2</dd><dt><span>standard_name :</span></dt><dd>solar_zenith_angle</dd><dt><span>long_name :</span></dt><dd>solar zenith angle</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>azim</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-f55eac9a-a703-4ae8-87df-7df0c6f8d079' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-f55eac9a-a703-4ae8-87df-7df0c6f8d079' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-95346cdc-fe2e-4cfd-8d75-2608d827795b' class='xr-var-data-in' type='checkbox'><label for='data-95346cdc-fe2e-4cfd-8d75-2608d827795b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Solar Azimuth Angle (deg)</dd><dt><span>units :</span></dt><dd>degrees</dd><dt><span>vmin :</span></dt><dd>-180.0</dd><dt><span>vmax :</span></dt><dd>360.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>standard_name :</span></dt><dd>solar_azimuth_angle</dd><dt><span>long_name :</span></dt><dd>solar azimuth angle</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>tout</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-ecb013cb-46fd-4b91-aae6-4b4a99149b16' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ecb013cb-46fd-4b91-aae6-4b4a99149b16' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-79e7516d-1780-4a7e-a441-d3d5f1a6bca0' class='xr-var-data-in' type='checkbox'><label for='data-79e7516d-1780-4a7e-a441-d3d5f1a6bca0' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>External Temperature (C)</dd><dt><span>units :</span></dt><dd>degrees_Celsius</dd><dt><span>vmin :</span></dt><dd>-35.0</dd><dt><span>vmax :</span></dt><dd>40.0</dd><dt><span>precision :</span></dt><dd>f6.1</dd><dt><span>long_name :</span></dt><dd>atmospheric temperature</dd><dt><span>standard_name :</span></dt><dd>air_temperature</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>pout</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-ccdf6d40-b89e-4b1a-b9d5-3f2085f60bbe' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-ccdf6d40-b89e-4b1a-b9d5-3f2085f60bbe' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-7113d54a-7e37-41c5-8734-e8f51264e035' class='xr-var-data-in' type='checkbox'><label for='data-7113d54a-7e37-41c5-8734-e8f51264e035' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>External  pressure (hPa)</dd><dt><span>units :</span></dt><dd>hPa</dd><dt><span>vmin :</span></dt><dd>940.0</dd><dt><span>vmax :</span></dt><dd>1040.0</dd><dt><span>precision :</span></dt><dd>f7.1</dd><dt><span>standard_name :</span></dt><dd>atmospheric_pressure</dd><dt><span>long_name :</span></dt><dd>atmospheric pressure</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>hout</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-fcf04ec5-a7e1-4df0-8d11-97754b6dd125' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-fcf04ec5-a7e1-4df0-8d11-97754b6dd125' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-3acf10b0-3443-43c3-82bd-98c0203d2066' class='xr-var-data-in' type='checkbox'><label for='data-3acf10b0-3443-43c3-82bd-98c0203d2066' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>External Humidity (%)</dd><dt><span>units :</span></dt><dd>%</dd><dt><span>vmin :</span></dt><dd>-99.0</dd><dt><span>vmax :</span></dt><dd>110.0</dd><dt><span>precision :</span></dt><dd>f6.1</dd><dt><span>standard_name :</span></dt><dd>atmospheric_humidity</dd><dt><span>long_name :</span></dt><dd>atmospheric humidity</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>sia</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-2e62e532-42dd-415c-8237-8f599b134af8' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-2e62e532-42dd-415c-8237-8f599b134af8' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ce5f9a41-07c8-4d8a-a25f-42767023aae4' class='xr-var-data-in' type='checkbox'><label for='data-ce5f9a41-07c8-4d8a-a25f-42767023aae4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Solar Intensity (Average) # not measured</dd><dt><span>units :</span></dt><dd></dd><dt><span>vmin :</span></dt><dd>-1.0</dd><dt><span>vmax :</span></dt><dd>9999.0</dd><dt><span>precision :</span></dt><dd>f7.1</dd><dt><span>long_name :</span></dt><dd>solar intensity average</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>fvsi</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-8211249e-623f-4122-b9a2-6cddae20820d' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-8211249e-623f-4122-b9a2-6cddae20820d' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-6b038fb9-f502-4053-b4bf-f203eb8e2531' class='xr-var-data-in' type='checkbox'><label for='data-6b038fb9-f502-4053-b4bf-f203eb8e2531' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Fractional Variation in Solar Intensity</dd><dt><span>units :</span></dt><dd>%</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>5.0</dd><dt><span>precision :</span></dt><dd>f7.3</dd><dt><span>long_name :</span></dt><dd>fractional variation in solar intensity</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>wspd</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-b69a8546-b662-49b2-b7df-2bcf6ec9a10c' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b69a8546-b662-49b2-b7df-2bcf6ec9a10c' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-f0d0f7ea-1bd5-4077-9940-b13356f54027' class='xr-var-data-in' type='checkbox'><label for='data-f0d0f7ea-1bd5-4077-9940-b13356f54027' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Wind Speed (m/s) # not measured</dd><dt><span>units :</span></dt><dd>m.s-1</dd><dt><span>vmin :</span></dt><dd>-1.0</dd><dt><span>vmax :</span></dt><dd>30.0</dd><dt><span>precision :</span></dt><dd>f6.1</dd><dt><span>standard_name :</span></dt><dd>wind_speed</dd><dt><span>long_name :</span></dt><dd>wind speed</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>wdir</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-b200e833-337d-4d56-8b07-9a8e3f1ec8ae' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-b200e833-337d-4d56-8b07-9a8e3f1ec8ae' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-59857608-963e-4d45-a78c-19409c755234' class='xr-var-data-in' type='checkbox'><label for='data-59857608-963e-4d45-a78c-19409c755234' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>Wind Direction (deg.) # not measured</dd><dt><span>units :</span></dt><dd>degrees</dd><dt><span>vmin :</span></dt><dd>-180.0</dd><dt><span>vmax :</span></dt><dd>360.0</dd><dt><span>precision :</span></dt><dd>f6.0</dd><dt><span>long_name :</span></dt><dd>wind direction</dd><dt><span>standard_name :</span></dt><dd>wind_from_direction</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xluft</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-335fe3b8-8377-49bf-94e5-4a9795594090' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-335fe3b8-8377-49bf-94e5-4a9795594090' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-56d12650-fc76-48ee-99d6-9d611d7ab422' class='xr-var-data-in' type='checkbox'><label for='data-56d12650-fc76-48ee-99d6-9d611d7ab422' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xluft</dd><dt><span>vmin :</span></dt><dd>0.96</dd><dt><span>vmax :</span></dt><dd>1.04</dd><dt><span>precision :</span></dt><dd>f8.4</dd><dt><span>description :</span></dt><dd>0.2095*column_air/column_O2 luft is used for &quot;dry air&quot;</dd><dt><span>units :</span></dt><dd>1</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>Not used</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_air</dd><dt><span>ancillary_variables :</span></dt><dd>xluft_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xluft_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-7ceb1ff4-2cf0-4136-b9d2-fac3d817daeb' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-7ceb1ff4-2cf0-4136-b9d2-fac3d817daeb' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a68d98ca-7add-4bb2-b5e3-7bcb0fbe121a' class='xr-var-data-in' type='checkbox'><label for='data-a68d98ca-7add-4bb2-b5e3-7bcb0fbe121a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xluft error</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>0.05</dd><dt><span>precision :</span></dt><dd>f7.4</dd><dt><span>description :</span></dt><dd>one-sigma precision luft is used for &quot;dry air&quot;</dd><dt><span>units :</span></dt><dd>1</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_air standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xhf</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-a5387496-e7dd-4870-998c-16892b1d5970' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-a5387496-e7dd-4870-998c-16892b1d5970' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9f282cfb-912e-4511-b87f-6e89801943ff' class='xr-var-data-in' type='checkbox'><label for='data-9f282cfb-912e-4511-b87f-6e89801943ff' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xhf</dd><dt><span>description :</span></dt><dd>0.2095*column_hf/column_o2</dd><dt><span>units :</span></dt><dd>ppt</dd><dt><span>vmin :</span></dt><dd>-1.0</dd><dt><span>vmax :</span></dt><dd>500.0</dd><dt><span>precision :</span></dt><dd>f7.1</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_hydrogen_fluoride</dd><dt><span>ancillary_variables :</span></dt><dd>xhf_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xhf_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-e1603e9a-4405-4e51-bf05-2bc15a3b8efa' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-e1603e9a-4405-4e51-bf05-2bc15a3b8efa' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-eac7e676-021f-48ce-aebd-e60d291e4215' class='xr-var-data-in' type='checkbox'><label for='data-eac7e676-021f-48ce-aebd-e60d291e4215' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xhf error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppt</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>500.0</dd><dt><span>precision :</span></dt><dd>f7.1</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_hydrogen_fluoride standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xh2o</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-9c24fb9b-087d-476a-923d-c8fd3d428ed0' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-9c24fb9b-087d-476a-923d-c8fd3d428ed0' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8e607ba8-5ba0-4f24-b182-ee9eb5ac384d' class='xr-var-data-in' type='checkbox'><label for='data-8e607ba8-5ba0-4f24-b182-ee9eb5ac384d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xh2o</dd><dt><span>description :</span></dt><dd>0.2095*column_h2o/column_o2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>-1.0</dd><dt><span>vmax :</span></dt><dd>15000.0</dd><dt><span>precision :</span></dt><dd>f9.2</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>ARM Radiosondes (Lamont+Darwin)</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_water</dd><dt><span>ancillary_variables :</span></dt><dd>xh2o_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xh2o_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-21eb3866-b651-41a0-8948-1c1bcefef2de' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-21eb3866-b651-41a0-8948-1c1bcefef2de' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-97059d3c-8f2c-44f8-9909-4d7dbfbc66cb' class='xr-var-data-in' type='checkbox'><label for='data-97059d3c-8f2c-44f8-9909-4d7dbfbc66cb' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xh2o error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>5000.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_water standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xhdo</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-bd75f039-7a86-4787-8bb5-277fe3a0c027' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-bd75f039-7a86-4787-8bb5-277fe3a0c027' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-66a54561-dcb0-493e-8faf-ad9fcacd4600' class='xr-var-data-in' type='checkbox'><label for='data-66a54561-dcb0-493e-8faf-ad9fcacd4600' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xhdo</dd><dt><span>description :</span></dt><dd>0.2095*column_hdo/column_o2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>-1.0</dd><dt><span>vmax :</span></dt><dd>15000.0</dd><dt><span>precision :</span></dt><dd>f9.2</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_semiheavy_water</dd><dt><span>ancillary_variables :</span></dt><dd>xhdo_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xhdo_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-893a6b82-d186-4654-b5e1-febc9f556333' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-893a6b82-d186-4654-b5e1-febc9f556333' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2af26f5e-9ad2-4d5d-a86b-03328b9e7f41' class='xr-var-data-in' type='checkbox'><label for='data-2af26f5e-9ad2-4d5d-a86b-03328b9e7f41' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xhdo error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>5000.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_semiheavy_water standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xco</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-604b1289-54af-40ed-b2a2-6f08382c77bc' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-604b1289-54af-40ed-b2a2-6f08382c77bc' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a9d09cd5-432a-445c-9fc4-d3cde6b9ad83' class='xr-var-data-in' type='checkbox'><label for='data-a9d09cd5-432a-445c-9fc4-d3cde6b9ad83' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xco</dd><dt><span>description :</span></dt><dd>0.2095*column_co/column_o2</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>vmin :</span></dt><dd>-1.0</dd><dt><span>vmax :</span></dt><dd>500.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>Not used</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_monoxide</dd><dt><span>ancillary_variables :</span></dt><dd>xco_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xco_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-1ae7efc6-29ef-4f6b-a5d4-075e0796252e' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1ae7efc6-29ef-4f6b-a5d4-075e0796252e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-34b81523-7556-4b62-9679-a3889b4b894f' class='xr-var-data-in' type='checkbox'><label for='data-34b81523-7556-4b62-9679-a3889b4b894f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xco error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>20.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_monoxide standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xn2o</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-19b6df7e-f323-45ca-8456-386b1d7031aa' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-19b6df7e-f323-45ca-8456-386b1d7031aa' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-96839f08-a2de-49a0-bea0-7e7887202ea1' class='xr-var-data-in' type='checkbox'><label for='data-96839f08-a2de-49a0-bea0-7e7887202ea1' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xn2o</dd><dt><span>description :</span></dt><dd>0.2095*column_n2o/column_o2</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>vmin :</span></dt><dd>100.0</dd><dt><span>vmax :</span></dt><dd>400.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>NOAA 2006A</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_nitrous_oxide</dd><dt><span>ancillary_variables :</span></dt><dd>xn2o_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xn2o_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-cc2d0099-ca41-4b4e-a17a-6d6de3635d4e' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-cc2d0099-ca41-4b4e-a17a-6d6de3635d4e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-2406f305-16fe-4f32-9fa6-e67a8ae5d3db' class='xr-var-data-in' type='checkbox'><label for='data-2406f305-16fe-4f32-9fa6-e67a8ae5d3db' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xn2o error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppb</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>50.0</dd><dt><span>precision :</span></dt><dd>f7.2</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_nitrous_oxide standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xch4</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-1893e2aa-a5d8-4dff-8bfd-29e24b007d31' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-1893e2aa-a5d8-4dff-8bfd-29e24b007d31' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e33b1a3e-ae43-4304-a791-d5fd7d5b9cfe' class='xr-var-data-in' type='checkbox'><label for='data-e33b1a3e-ae43-4304-a791-d5fd7d5b9cfe' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xch4</dd><dt><span>description :</span></dt><dd>0.2095*column_ch4/column_o2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>1.2</dd><dt><span>vmax :</span></dt><dd>2.2</dd><dt><span>precision :</span></dt><dd>f9.4</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>WMO CH4 X2004</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_methane</dd><dt><span>ancillary_variables :</span></dt><dd>xch4_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xch4_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-43bb87d3-30d8-4015-a339-8afea9c604d5' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-43bb87d3-30d8-4015-a339-8afea9c604d5' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-eb312161-5585-4d87-b6b6-a67dd488eff9' class='xr-var-data-in' type='checkbox'><label for='data-eb312161-5585-4d87-b6b6-a67dd488eff9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xch4 error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>0.1</dd><dt><span>precision :</span></dt><dd>f8.4</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_methane standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xlco2_experimental</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-acb83b9d-7bef-4e26-b4f0-a44e1574ecae' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-acb83b9d-7bef-4e26-b4f0-a44e1574ecae' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-05202c7c-55da-4c0e-82f3-4cb6d1b10592' class='xr-var-data-in' type='checkbox'><label for='data-05202c7c-55da-4c0e-82f3-4cb6d1b10592' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xlco2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>350.0</dd><dt><span>vmax :</span></dt><dd>450.0</dd><dt><span>precision :</span></dt><dd>f9.2</dd><dt><span>description :</span></dt><dd>0.2095*column_lco2/column_o2 lco2 is the strong CO2 band centered at 4852.87 cm-1 and does not contribute to the xco2 calculation. These data are EXPERIMENTAL. If you plan to use them, please work with the site PI.</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>WMO CO2 X2007</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_dioxide_from_strong_band</dd><dt><span>ancillary_variables :</span></dt><dd>xlco2_error_experimental</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xlco2_error_experimental</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-587cc1ed-3a5c-473c-a1c4-d6c28c2778ad' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-587cc1ed-3a5c-473c-a1c4-d6c28c2778ad' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e3c96d42-3ea5-4b1d-bf39-768a2bc03400' class='xr-var-data-in' type='checkbox'><label for='data-e3c96d42-3ea5-4b1d-bf39-768a2bc03400' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xlco2 error</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>20.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>description :</span></dt><dd>one-sigma precision lco2 is the strong CO2 band centered at 4852.87 cm-1 and does not contribute to the xco2 calculation. These data are EXPERIMENTAL. If you plan to use them, please work with the site PI.</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_dioxide_from_strong_band standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xwco2_experimental</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-2b6dcc1e-0130-40be-9711-4d0ddef82bbe' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-2b6dcc1e-0130-40be-9711-4d0ddef82bbe' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-db10e030-b406-44df-b70e-f2335d728c79' class='xr-var-data-in' type='checkbox'><label for='data-db10e030-b406-44df-b70e-f2335d728c79' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xwco2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>350.0</dd><dt><span>vmax :</span></dt><dd>450.0</dd><dt><span>precision :</span></dt><dd>f9.2</dd><dt><span>description :</span></dt><dd>0.2095*column_wco2/column_o2 wco2 is the weak CO2 band centered at 6073.5 and does not contribute to the xco2 calculation. These data are EXPERIMENTAL. If you plan to use them, please work with the site PI.</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>WMO CO2 X2007</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_dioxide_from_weak_band</dd><dt><span>ancillary_variables :</span></dt><dd>xwco2_error_experimental</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xwco2_error_experimental</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-fd157291-b50f-4112-9d47-8241a9e1a5dc' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-fd157291-b50f-4112-9d47-8241a9e1a5dc' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d780d5c2-a7d0-4654-8c85-6dea94a5fbd5' class='xr-var-data-in' type='checkbox'><label for='data-d780d5c2-a7d0-4654-8c85-6dea94a5fbd5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xwco2 error</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>20.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>description :</span></dt><dd>one-sigma precision wco2 is the weak CO2 band centered at 6073.5 and does not contribute to the xco2 calculation. These data are EXPERIMENTAL. If you plan to use them, please work with the site PI.</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_dioxide_from_weak_band standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xco2</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-6033c8ac-26e1-40f3-b05a-6b7ef75d931e' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-6033c8ac-26e1-40f3-b05a-6b7ef75d931e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ea5a3b43-31f7-4450-8b98-2b76bad73cdb' class='xr-var-data-in' type='checkbox'><label for='data-ea5a3b43-31f7-4450-8b98-2b76bad73cdb' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xco2</dd><dt><span>description :</span></dt><dd>0.2095*column_co2/column_o2</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>350.0</dd><dt><span>vmax :</span></dt><dd>450.0</dd><dt><span>precision :</span></dt><dd>f9.2</dd><dt><span>wmo_or_analogous_scale :</span></dt><dd>WMO CO2 X2007</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_dioxide</dd><dt><span>ancillary_variables :</span></dt><dd>xco2_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>xco2_error</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-2805561d-0119-457c-a86b-143161605928' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-2805561d-0119-457c-a86b-143161605928' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-59396b00-7ffc-4816-8518-917882f06cd9' class='xr-var-data-in' type='checkbox'><label for='data-59396b00-7ffc-4816-8518-917882f06cd9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>long_name :</span></dt><dd>xco2 error</dd><dt><span>description :</span></dt><dd>one-sigma precision</dd><dt><span>units :</span></dt><dd>ppm</dd><dt><span>vmin :</span></dt><dd>0.0</dd><dt><span>vmax :</span></dt><dd>10.0</dd><dt><span>precision :</span></dt><dd>f8.2</dd><dt><span>standard_name :</span></dt><dd>column_average_dry_atmosphere_mole_fraction_of_carbon_dioxide standard_error</dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>airmass</span></div><div class='xr-var-dims'>(time)</div><div class='xr-var-dtype'>float32</div><div class='xr-var-preview xr-preview'>...</div><input id='attrs-63e7e885-8049-4e13-ab21-94860a413dd0' class='xr-var-attrs-in' type='checkbox' ><label for='attrs-63e7e885-8049-4e13-ab21-94860a413dd0' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-29f3b4c7-228f-4d22-896f-7eb49a0cc46e' class='xr-var-data-in' type='checkbox'><label for='data-29f3b4c7-228f-4d22-896f-7eb49a0cc46e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'><dt><span>description :</span></dt><dd>airmass computed as the total vertical column of O2 divided by the total slant column of O2 retrieved from the window centered at 7885 cm-1.</dd><dt><span>long_name :</span></dt><dd>airmass</dd><dt><span>units :</span></dt><dd></dd></dl></div><div class='xr-var-data'><pre>[108615 values with dtype=float32]</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-36f20ab6-6611-48fb-84ca-c41f6ef535c3' class='xr-section-summary-in' type='checkbox'  ><label for='section-36f20ab6-6611-48fb-84ca-c41f6ef535c3' class='xr-section-summary' >Indexes: <span>(3)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-index-name'><div>time</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-dd8f5df1-aef1-4ca0-b810-cbe924354514' class='xr-index-data-in' type='checkbox'/><label for='index-dd8f5df1-aef1-4ca0-b810-cbe924354514' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(DatetimeIndex([&#x27;2005-03-16 07:49:11.711999872&#x27;,\n",
       "               &#x27;2005-03-16 07:49:36.767999872&#x27;,\n",
       "               &#x27;2005-03-16 07:50:13.920000128&#x27;,\n",
       "               &#x27;2005-03-16 07:50:38.976000128&#x27;,\n",
       "                  &#x27;2005-03-16 07:51:16.128000&#x27;,\n",
       "                  &#x27;2005-03-16 07:51:41.184000&#x27;,\n",
       "                  &#x27;2005-03-16 07:52:19.200000&#x27;,\n",
       "                  &#x27;2005-03-16 07:52:43.392000&#x27;,\n",
       "                  &#x27;2005-03-16 07:53:21.408000&#x27;,\n",
       "                  &#x27;2005-03-16 07:53:46.464000&#x27;,\n",
       "               ...\n",
       "                  &#x27;2021-04-26 12:45:48.384000&#x27;,\n",
       "                  &#x27;2021-04-26 12:46:16.896000&#x27;,\n",
       "                  &#x27;2021-04-26 12:49:43.392000&#x27;,\n",
       "                  &#x27;2021-04-26 12:50:05.856000&#x27;,\n",
       "                  &#x27;2021-04-26 12:53:32.352000&#x27;,\n",
       "                  &#x27;2021-04-26 12:53:53.952000&#x27;,\n",
       "                  &#x27;2021-04-26 12:57:20.448000&#x27;,\n",
       "                  &#x27;2021-04-26 13:22:05.664000&#x27;,\n",
       "                  &#x27;2021-04-26 13:25:31.296000&#x27;,\n",
       "                  &#x27;2021-04-26 13:29:18.528000&#x27;],\n",
       "              dtype=&#x27;datetime64[ns]&#x27;, name=&#x27;time&#x27;, length=108615, freq=None))</pre></div></li><li class='xr-var-item'><div class='xr-index-name'><div>prior_altitude</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-d871b98a-daed-4f3b-ba6f-277773f0b9db' class='xr-index-data-in' type='checkbox'/><label for='index-d871b98a-daed-4f3b-ba6f-277773f0b9db' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Float64Index([                0.0, 0.41999998688697815,  0.8799999952316284,\n",
       "               1.3799999952316284,  1.9199999570846558,                 2.5,\n",
       "                3.119999885559082,  3.7799999713897705,   4.480000019073486,\n",
       "                 5.21999979019165,                 6.0,   6.820000171661377,\n",
       "                7.679999828338623,   8.579999923706055,   9.520000457763672,\n",
       "                             10.5,  11.520000457763672,  12.579999923706055,\n",
       "               13.680000305175781,  14.819999694824219,                16.0,\n",
       "               17.219999313354492,  18.479999542236328,  19.780000686645508,\n",
       "                 21.1200008392334,                22.5,  23.920000076293945,\n",
       "                 25.3799991607666,    26.8799991607666,  28.420000076293945,\n",
       "                             30.0,    31.6200008392334,  33.279998779296875,\n",
       "                34.97999954223633,  36.720001220703125,                38.5,\n",
       "                40.31999969482422,   42.18000030517578,   44.08000183105469,\n",
       "                46.02000045776367,                48.0,   50.02000045776367,\n",
       "                52.08000183105469,   54.18000030517578,   56.31999969482422,\n",
       "                             58.5,  60.720001220703125,   62.97999954223633,\n",
       "                65.27999877929688,   67.62000274658203,                70.0],\n",
       "             dtype=&#x27;float64&#x27;, name=&#x27;prior_altitude&#x27;))</pre></div></li><li class='xr-var-item'><div class='xr-index-name'><div>ak_altitude</div></div><div class='xr-index-preview'>PandasIndex</div><div></div><input id='index-5c2e1d9b-6b3c-4048-b48c-224a21abd618' class='xr-index-data-in' type='checkbox'/><label for='index-5c2e1d9b-6b3c-4048-b48c-224a21abd618' title='Show/Hide index repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-index-data'><pre>PandasIndex(Float64Index([                0.0, 0.41999998688697815,  0.8799999952316284,\n",
       "               1.3799999952316284,  1.9199999570846558,                 2.5,\n",
       "                3.119999885559082,  3.7799999713897705,   4.480000019073486,\n",
       "                 5.21999979019165,                 6.0,   6.820000171661377,\n",
       "                7.679999828338623,   8.579999923706055,   9.520000457763672,\n",
       "                             10.5,  11.520000457763672,  12.579999923706055,\n",
       "               13.680000305175781,  14.819999694824219,                16.0,\n",
       "               17.219999313354492,  18.479999542236328,  19.780000686645508,\n",
       "                 21.1200008392334,                22.5,  23.920000076293945,\n",
       "                 25.3799991607666,    26.8799991607666,  28.420000076293945,\n",
       "                             30.0,    31.6200008392334,  33.279998779296875,\n",
       "                34.97999954223633,  36.720001220703125,                38.5,\n",
       "                40.31999969482422,   42.18000030517578,   44.08000183105469,\n",
       "                46.02000045776367,                48.0,   50.02000045776367,\n",
       "                52.08000183105469,   54.18000030517578,   56.31999969482422,\n",
       "                             58.5,  60.720001220703125,   62.97999954223633,\n",
       "                65.27999877929688,   67.62000274658203,                70.0],\n",
       "             dtype=&#x27;float64&#x27;, name=&#x27;ak_altitude&#x27;))</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-aedb0d27-c3e1-4825-aa33-3b8483884fbe' class='xr-section-summary-in' type='checkbox'  ><label for='section-aedb0d27-c3e1-4825-aa33-3b8483884fbe' class='xr-section-summary' >Attributes: <span>(16)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>source :</span></dt><dd>Products retrieved from solar absorption spectra using the GGG2020 software</dd><dt><span>description :</span></dt><dd>\n",
       "Carbon Dioxide Dry Column-Averaged Mixing Ratios from Ny-Alesund,\n",
       "\n",
       "Important changes regarding TCCON standards in the ranges for the flags:\n",
       "1. OPD is set to 45-67 instead of 45\n",
       "\n",
       "\n",
       "Version: 2021-08-25\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "CONTENTS\n",
       "\n",
       "1. Data source and contacts\n",
       "2. Use of data\n",
       "3. Reciprocity\n",
       "4. Warnings\n",
       "5. Update notes\n",
       "6. Introduction\n",
       "7. General Comments on data\n",
       "8. References\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "1. DATA SOURCE AND CONTACTS\n",
       "\n",
       "Institute of Environmental Physics (IUP), Universtity of Bremen, Germany\n",
       "\n",
       "Correspondence concerning these data should be directed to:\n",
       "Matthias Buschmann, Mathias Palm, Christof Petri, Justus Notholt\n",
       "\n",
       "Email:  m_buschmann@iup.physik.uni-bremen.de, mathias.palm@uni-bremen.de,\n",
       "christof.petri@iup.physik.uni-bremen.de, jnotholt@iup.physik.uni-bremen.de\n",
       "\n",
       "Matthias Buschmann\n",
       "Institute of Environmental Physics\n",
       "University of Bremen\n",
       "Otto-Hahn-Allee 1\n",
       "D-28359 Bremen\n",
       "Germany\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "2. USE OF DATA\n",
       "\n",
       "These data are made freely available to the public and the scientific\n",
       "community in the belief that their wide dissemination will lead to greater\n",
       "understanding and new scientific insights.  The availability of these\n",
       "data does not constitute publication of the data. We expect all users\n",
       "to assure that the authors receive fair credit for their work. If the\n",
       "data are obtained for potential use in a publication or presentation\n",
       "the authors should be informed at the outset of the nature of this work.\n",
       "If the data are essential to the work, or if an important result or\n",
       "conclusion depends on the data, co-authorship may be appropriate.\n",
       "This should be discussed at an early stage in the work. Manuscripts\n",
       "using the data should be sent to the authors for review before they\n",
       "are submitted for publication, so we can insure that the quality and\n",
       "limitations of the data are accurately represented. Please see this page\n",
       "for more details: https://tccon-wiki.caltech.edu/Main/DataUseGuidelines\n",
       "\n",
       "One condition of use is that the PIs/co-Is are contacted before these\n",
       "data are used for any scientific purposes. The major reason for this\n",
       "is that these data are not processed in the ideal fashion, though all\n",
       "differences should be minimal, if not insignificant. In any case, the \n",
       "responsbile investigators should be contacted to see if an update to \n",
       "the data is available.\n",
       "\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "3. RECIPROCITY\n",
       "\n",
       "Use of these data implies an agreement to reciprocate. Individuals\n",
       "making similar measurements agree to make their own data available to\n",
       "the general public and to the scientific community in an equally complete\n",
       "and easily accessible form. Modelers are encouraged to make available to\n",
       "the community, upon request, their own tools used in the interpretation\n",
       "of this data, namely well-documented model code, transport fields, and\n",
       "additional information necessary for other scientists to repeat the work\n",
       "and to run modified versions. Model availability includes collaborative\n",
       "support for new users of the models.\n",
       "\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "4. WARNINGS\n",
       "\n",
       "Every effort is made to produce the most accurate and precise measurements\n",
       "possible. However, we reserve the right to make corrections to the data.\n",
       "We are not responsible for results and conclusions based on use of these\n",
       "data without regard to this warning.\n",
       "\n",
       "Also note that in this version, the TCCON standard opus-ipp software has\n",
       "*not* been used to pre-process the interferograms. This should make a \n",
       "very minor difference to the final retrieved xGAS values.\n",
       "\n",
       "The data provided here are processed using a standard mid-latitude apriori\n",
       "VMR file, which is probably not well suited to the arctic site. \n",
       "\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "5. UPDATE NOTES\n",
       "\n",
       "This version provided by Christof Petri\n",
       "(christof.petri@iup.physik.uni-bremen.de)\n",
       "\n",
       "Due to its high latitude, solar absorption measurements are only possible\n",
       "at Ny Alesund from late March until late September each year. \n",
       "\n",
       "From instrument installation until 2012 (inclusive) the instrument was a\n",
       "Bruker 120HR. In polar night 2012-3, the instrument electronics were \n",
       "upgraded to a 120/5HR.\n",
       "\n",
       "Through early years, measurements were only taken in very clear sky \n",
       "conditions, as no DC correction was available to correct for solar\n",
       "intensity variations. After the upgraded electronics were installed, this\n",
       "approach was changed to take more NIR measurements. Future updates will\n",
       "include more robust filtering on solar intensity variation criteria.\n",
       "\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "6. INTRODUCTION\n",
       "\n",
       "Column-average Dry Mole Fractions (DMF) reported in this file were\n",
       "acquired using a Fourier Transform Spectrometer (FTS) located at the\n",
       "Ny Alesund site (78.9 N, 11.9 E, 27m asl). Direct solar spectra were \n",
       "acquired in the near-infrared spectral region.  These spectra were used \n",
       "to retrieve column abundances of CO2, CH4 and O2.\n",
       "\n",
       "Direct solar spectra were acquired in the near-infrared spectral region. \n",
       "These spectra were used to retrieve column abundances of CO2, O2, CH4, \n",
       "CO, N2O, HF, H2O and HDO.\n",
       "A description of a similar observatory, spectral retrievals and \n",
       "calibration procedure are given in:\n",
       "\n",
       "originally:\n",
       "\n",
       "Washenfelder, R.A., G.C. Toon, J-F. Blavier, Z. Yang, N.T. Allen\n",
       "P.O. Wennberg, S.A. Vay, D.M. Matross, and B.C. Daube, 2006, Carbon\n",
       "dioxide column abundances at the Wisconsin Tall Tower site, Journal of\n",
       "Geophysical Research, 2006, 111, doi:10.1029/2006JD007154.\n",
       "\n",
       "then also in, but including an important description of an empircal\n",
       "correction based on (a spectrscopic) CO2 airmass dependence:\n",
       "\n",
       "Wunch, D., Toon, G. C., Wennberg, P. O., Wofsy, S. C., Stephens, B. B., \n",
       "Fischer, M. L., Uchino, O., Abshire, J. B., Bernath, P., Biraud, S. C., \n",
       "Blavier, J.-F. L., Boone, C., Bowman, K. P., Browell, E. V., Campos, T., \n",
       "Connor, B. J., Daube, B. C., Deutscher, N. M., Diao, M., Elkins, J. W., \n",
       "Gerbig, C., Gottlieb, E., Griffith, D. W. T., Hurst, D. F., Jimenez, R., \n",
       "Keppel-Aleks, G., Kort, E. A., Macatangay, R., Machida, T., Matsueda, H., \n",
       "Moore, F., Morino, I., Park, S., Robinson, J., Roehl, C. M., Sawa, Y., \n",
       "Sherlock, V., Sweeney, C., Tanaka, T., and Zondlo, M. A.: Calibration of \n",
       "the Total Carbon Column Observing Network using aircraft profile data, \n",
       "Atmos. Meas. Tech., 3, 1351-1362, doi:10.5194/amt-3-1351-2010, 2010\n",
       "\n",
       "and the TCCON is introduced in:\n",
       "Wunch, D., et al. (2011), The Total Carbon Column Observing Network (TCCON),\n",
       "Philosophical Transacations of the Royal Society A.\n",
       "\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "7. GENERAL COMMENTS ON THE DATA\n",
       "\n",
       "Dry column-average CO2 DMF has been calculated according to\n",
       "\n",
       "CO2 DMF = 0.2095 x column CO2 / column O2.\n",
       "\n",
       "Column CO2 is retrieved for two CO2 bands centered at 6228 cm-1 and\n",
       "6348 cm-1. Column O2 is retrieved from the electronic band centered at\n",
       "7882 cm-1. The average of the two calculated CO2 DMFs is presented here.\n",
       "\n",
       "Column-average CH4 DMF is calculated similarly, from the average of three\n",
       "CH4 retrievals, centred at 5938 cm-1, 6002 cm-1 and 6076 cm-1.\n",
       "\n",
       "CO column-averages are calculated as the average of two microwindows\n",
       "centred at 4233 cm-1 and 4290 cm-1. N2O is the average of two windows\n",
       "at 4389 cm-1 and 4429 cm-1. H2O is the average of nine microwindows at\n",
       "6076, 6099, 6125, 6255, 6301, 6392, 6401 and 6469 cm-1. HDO is the \n",
       "average of four windows at 4054, 4116, 4212 and 4232 cm-1.\n",
       "\n",
       "The dry column-average CO2 DMF (0.2095 x column CO2 / column O2) is\n",
       "affected by three main sources of error:\n",
       "\n",
       "1. Measurement precision\n",
       "The standard deviation of column CO2 / column O2 during a one hour period\n",
       "is better than 0.1% under clear sky conditions and ~0.2% under partly\n",
       "cloudy conditions. Repeatability of the measurement is not a significant\n",
       "source of error.\n",
       "\n",
       "2. Spectroscopic errors\n",
       "The retrieved O2 columns were NOT reduced by 2.27% to bring them into\n",
       "agreement with the dry surface pressure, as described in Washenfelder et\n",
       "al. (2006). The absolute accuracy of the CO2 retrievals was calibrated\n",
       "by comparison to integrated aircraft profiles, resulting in a correction\n",
       "of 0.99. The standard deviation of the fitting residuals is ~0.1%. \n",
       "The aircraft profiles were performed with the sun\n",
       "at airmass 1.1 to 2.0 (SZA 25 to 60 deg), and the column-average CO2 DMF is\n",
       "now well-calibrated for these values.A However, additional systematic\n",
       "errors may be present at higher airmass due to errors in the spectroscopy\n",
       "of CO2 and or O2. \n",
       "\n",
       "3. Systematic instrumental changes over time\n",
       "Retrieved O2 DMF increased by ~0.3% during the observation period reported\n",
       "here. We believe that this error affects both the CO2 and O2 retrievals\n",
       "similarly, but for now assume that the column CO2 / column O2 ratio may\n",
       "also have a systematic error of 0.3% over the observation period.\n",
       "\n",
       "In summary, the measurement precision of ~0.1% under clear sky and\n",
       "~0.2% under partly cloudy conditions does not affect the accuracy of the\n",
       "measurements. However, spectroscopic errors introduce a systematic bias\n",
       "which depends on airmass.  We have calibrated the FTS column retrievals\n",
       "at airmass 1.1 to 2.0 during Jul to Aug 2004, and expect that the absolute\n",
       "accuracy at these airmasses has been maintained within 0.3% throughout\n",
       "the subsequent data record.\n",
       "\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "8. REFERENCES\n",
       "\n",
       "Washenfelder, R.A., G.C. Toon, J-F. Blavier, Z. Yang, N.T. Allen\n",
       "P.O. Wennberg, S.A. Vay, D.M. Matross, and B.C. Daube, 2006.  Carbon\n",
       "dioxide column abundances at the Wisconsin Tall Tower site, Journal of\n",
       "Geophysical Research, 2006, 111, doi:10.1029/2006JD007154.\n",
       "\n",
       "Wunch, D., Toon, G. C., Wennberg, P. O., Wofsy, S. C., Stephens, B. B., \n",
       "Fischer, M. L., Uchino, O., Abshire, J. B., Bernath, P., Biraud, S. C., \n",
       "Blavier, J.-F. L., Boone, C., Bowman, K. P., Browell, E. V., Campos, T., \n",
       "Connor, B. J., Daube, B. C., Deutscher, N. M., Diao, M., Elkins, J. W., \n",
       "Gerbig, C., Gottlieb, E., Griffith, D. W. T., Hurst, D. F., Jimenez, R., \n",
       "Keppel-Aleks, G., Kort, E. A., Macatangay, R., Machida, T., Matsueda, H., \n",
       "Moore, F., Morino, I., Park, S., Robinson, J., Roehl, C. M., Sawa, Y., \n",
       "Sherlock, V., Sweeney, C., Tanaka, T., and Zondlo, M. A.: Calibration of \n",
       "the Total Carbon Column Observing Network using aircraft profile data, \n",
       "Atmos. Meas. Tech., 3, 1351-1362, doi:10.5194/amt-3-1351-2010, 2010\n",
       "\n",
       "Wunch, D., et al. (2011), The Total Carbon Column Observing Network (TCCON),\n",
       "Philosophical Transacations of the Royal Society A.\n",
       "\n",
       "--------------------------------------------------------------------------\n",
       "</dd><dt><span>file_creation :</span></dt><dd>Created with Python 3.7.3; the library netCDF4 1.5.0.1; and the code concat_netcdf.py</dd><dt><span>title :</span></dt><dd>Atmospheric trace gas column-average dry-air mole fractions retrieved from solar absorption spectra measured by ground based Fourier Transform Infrared Spectrometers that are part of the Total Carbon Column Observing Network (TCCON)</dd><dt><span>data_use_policy :</span></dt><dd>https://tccon-wiki.caltech.edu/Network_Policy/Data_Use_Policy</dd><dt><span>auxiliary_data_description :</span></dt><dd>https://tccon-wiki.caltech.edu/Network_Policy/Data_Use_Policy/Auxiliary_Data</dd><dt><span>more_information :</span></dt><dd>https://tccon-wiki.caltech.edu</dd><dt><span>tccon_reference :</span></dt><dd>Wunch, D., G. C. Toon, J.-F. L. Blavier, R. A. Washenfelder, J. Notholt, B. J. Connor, D. W. T. Griffith, V. Sherlock, and P. O. Wennberg (2011), The total carbon column observing network, Philosophical Transactions of the Royal Society - Series A: Mathematical, Physical and Engineering Sciences, 369(1943), 2087-2112, doi:10.1098/rsta.2010.0240. Available from: http://dx.doi.org/10.1098/rsta.2010.0240</dd><dt><span>history :</span></dt><dd>Created Wed Apr 27 20:04:37 2022 (UTC) from the engineering file ny20050314_20210919.private.qc.nc</dd><dt><span>long_name :</span></dt><dd>nyalesund01</dd><dt><span>location :</span></dt><dd>Ny-Ålesund, Svalbard, Norway</dd><dt><span>contact :</span></dt><dd>Matthias Buschmann &lt;m_buschmann@iup.physik.uni-bremen.de&gt;, Justus Notholt &lt;jnotholt@iup.physik.uni-bremen.de&gt;</dd><dt><span>site_reference :</span></dt><dd></dd><dt><span>data_doi :</span></dt><dd>10.14291/tccon.ggg2020.nyalesund01.R0</dd><dt><span>data_reference :</span></dt><dd>M. Buschmann, C. Petri, M. Palm, T. Warneke, J. Notholt, AWIPEV Station Engineers. 2022. TCCON data from Ny-Alesund, Svalbard, Norway, Release GGG2020R0. TCCON data archive, hosted by CaltechDATA, California Institute of Technology, Pasadena, CA, U.S.A. https://doi.org/10.14291/tccon.ggg2020.nyalesund01.R0</dd><dt><span>data_revision :</span></dt><dd>R0</dd></dl></div></li></ul></div></div>"
      ],
      "text/plain": [
       "<xarray.Dataset>\n",
       "Dimensions:                                       (time: 108615,\n",
       "                                                   prior_altitude: 51,\n",
       "                                                   ak_altitude: 51)\n",
       "Coordinates:\n",
       "  * time                                          (time) datetime64[ns] 2005-...\n",
       "  * prior_altitude                                (prior_altitude) float32 0....\n",
       "  * ak_altitude                                   (ak_altitude) float32 0.0 ....\n",
       "Data variables: (12/75)\n",
       "    prior_time                                    (time) datetime64[ns] ...\n",
       "    ak_pressure                                   (ak_altitude) float32 ...\n",
       "    ak_xco2                                       (time, ak_altitude) float32 ...\n",
       "    extrapolation_flags_ak_xco2                   (time) int8 ...\n",
       "    ak_xwco2                                      (time, ak_altitude) float32 ...\n",
       "    extrapolation_flags_ak_xwco2                  (time) int8 ...\n",
       "    ...                                            ...\n",
       "    xlco2_error_experimental                      (time) float32 ...\n",
       "    xwco2_experimental                            (time) float32 ...\n",
       "    xwco2_error_experimental                      (time) float32 ...\n",
       "    xco2                                          (time) float32 ...\n",
       "    xco2_error                                    (time) float32 ...\n",
       "    airmass                                       (time) float32 ...\n",
       "Attributes: (12/16)\n",
       "    source:                      Products retrieved from solar absorption spe...\n",
       "    description:                 \\nCarbon Dioxide Dry Column-Averaged Mixing ...\n",
       "    file_creation:               Created with Python 3.7.3; the library netCD...\n",
       "    title:                       Atmospheric trace gas column-average dry-air...\n",
       "    data_use_policy:             https://tccon-wiki.caltech.edu/Network_Polic...\n",
       "    auxiliary_data_description:  https://tccon-wiki.caltech.edu/Network_Polic...\n",
       "    ...                          ...\n",
       "    location:                    Ny-Ålesund, Svalbard, Norway\n",
       "    contact:                     Matthias Buschmann <m_buschmann@iup.physik.u...\n",
       "    site_reference:              \n",
       "    data_doi:                    10.14291/tccon.ggg2020.nyalesund01.R0\n",
       "    data_reference:              M. Buschmann, C. Petri, M. Palm, T. Warneke,...\n",
       "    data_revision:               R0"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ds = xr.open_dataset(path_in)\n",
    "ds"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "373bb2de-7ceb-46a2-84da-ce871c977b0d",
   "metadata": {},
   "outputs": [],
   "source": [
    "time = ds.time.data\n",
    "data = ds.xch4.data*1000\n",
    "error = ds.xch4_error.data*1000\n",
    "product_type =\"TCCON.GGG2020\"\n",
    "\n",
    "ds.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "id": "512332bb-1834-430e-80d4-9f9fd18d9c9b",
   "metadata": {},
   "outputs": [],
   "source": [
    "ts = dlmhelper.data.TimeSeries(data, time64 = time, time_unit='month', error=error, product_type=product_type)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 51,
   "id": "72c6a14f-ad5c-4c0b-a846-60f91060a1e1",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[<matplotlib.lines.Line2D at 0x7f0913bc01c0>]"
      ]
     },
     "execution_count": 51,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": "[encoded data, 27412 characters]\n",
      "text/plain": [
       "<Figure size 432x288 with 2 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, axs = plt.subplots(2,1)\n",
    "\n",
    "axs[0].plot(ts.time64, ts.data)\n",
    "axs[1].plot(ts.time64, ts.error)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "id": "986a6ba0-4210-4875-becf-6d2e7fa64ed2",
   "metadata": {},
   "outputs": [],
   "source": [
    "scores = dlmhelper.tools.cv_dlm_ensemble(ts, level = [True], variable_level=[False], trend = [True], variable_trend=[True]\n",
    "                                           ,seasonal=[True], seasonal_period=[[12]], seasonal_harmonics=[[[1,2,3,4]]],\n",
    "                                           variable_seasonal=[[[True, False]]], autoregressive=[None, 1], irregular=[True, False], verbose=0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "id": "efd20337-715b-430c-8fa6-b67fb3af1925",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Processed: LTs_SsP12H1_I\n",
      "Processed: LTs_SsP12H1\n",
      "Processed: LTs_SsP12H1_A1_I\n",
      "Processed: LTs_SsP12H1_A1\n",
      "Processed: LTs_SP12H1_I\n",
      "Processed: LTs_SP12H1\n",
      "Processed: LTs_SP12H1_A1_I\n",
      "Processed: LTs_SP12H1_A1\n",
      "Processed: LTs_SsP12H2_I\n",
      "Processed: LTs_SsP12H2\n",
      "Processed: LTs_SsP12H2_A1_I\n",
      "Processed: LTs_SsP12H2_A1\n",
      "Processed: LTs_SP12H2_I\n",
      "Processed: LTs_SP12H2\n",
      "Processed: LTs_SP12H2_A1_I\n",
      "Processed: LTs_SP12H2_A1\n",
      "Processed: LTs_SsP12H3_I\n",
      "Processed: LTs_SsP12H3\n",
      "Processed: LTs_SsP12H3_A1_I\n",
      "Processed: LTs_SsP12H3_A1\n",
      "Processed: LTs_SP12H3_I\n",
      "Processed: LTs_SP12H3\n",
      "Processed: LTs_SP12H3_A1_I\n",
      "Processed: LTs_SP12H3_A1\n",
      "Processed: LTs_SsP12H4_I\n",
      "Processed: LTs_SsP12H4\n",
      "Processed: LTs_SsP12H4_A1_I\n",
      "Processed: LTs_SsP12H4_A1\n",
      "Processed: LTs_SP12H4_I\n",
      "Processed: LTs_SP12H4\n",
      "Processed: LTs_SP12H4_A1_I\n",
      "Processed: LTs_SP12H4_A1\n"
     ]
    }
   ],
   "source": [
    "results = dlmhelper.tools.dlm_ensemble(ts,\"TCCON_NYA\", level = [True], variable_level=[False], trend = [True], variable_trend=[True]\n",
    "                                           ,seasonal=[True], seasonal_period=[[12]], seasonal_harmonics=[[[1,2,3,4]]],\n",
    "                                           variable_seasonal=[[[True, False]]], autoregressive=[None, 1], irregular=[True, False], scores = scores, verbose=2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "id": "2a3337fc-084d-42ac-baf1-5ca2ec02790c",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "| Model            | converged   |      aic |       ll |              ssr |        mse |   cov_level |    cov_trend |     cov_seas |          cov_ar |    cv_amse |              agg |\n",
      "|:-----------------|:------------|---------:|---------:|-----------------:|-----------:|------------:|-------------:|-------------:|----------------:|-----------:|-----------------:|\n",
      "| LTs_SP12H1_I     | True        |  868.702 | -432.351 |  53289           |    517.369 |     10.7723 |   0.0174997  |      7.70802 |     0           |    211.71  |    230.19        |\n",
      "| LTs_SP12H1_A1    | True        |  869.323 | -431.661 |  52864.5         |    513.248 |     12.1319 |   0.0185384  |      8.47567 |    92.5495      |    209.724 |    230.331       |\n",
      "| LTs_SP12H1_A1_I  | True        |  872.702 | -432.351 |  53289.1         |    517.37  |     10.7712 |   0.0174919  |      7.70786 |     1.18152e-06 |    211.877 |    230.356       |\n",
      "| LTs_SsP12H1_I    | True        |  869.288 | -431.644 |  53339           |    517.855 |     12.0326 |   0.0194716  |     13.5008  |     0           |    209.575 |    235.108       |\n",
      "| LTs_SsP12H1_A1_I | True        |  873.288 | -431.644 |  53338.8         |    517.852 |     12.0319 |   0.0194681  |     13.498   |     0.000202964 |    209.738 |    235.268       |\n",
      "| LTs_SsP12H1_A1   | True        |  870.53  | -431.265 |  52960.1         |    514.176 |     12.772  |   0.0196891  |     13.2288  |    90.8953      |    230.064 |    256.065       |\n",
      "| LTs_SP12H2_A1    | True        |  854.887 | -424.444 |  72964.3         |    722.419 |     57.8359 |   0.0183628  |     92.442   |    92.8073      |    210.214 |    360.492       |\n",
      "| LTs_SsP12H2_A1   | True        |  855.883 | -423.941 |  76167.9         |    754.138 |     57.5857 |   0.0186618  |     99.477   |    90.0791      |    204.176 |    361.239       |\n",
      "| LTs_SP12H2_I     | True        |  855.422 | -425.711 |  26169           |    259.099 |     65.2009 |   0.0169513  |    106.292   |     0           |    210.723 |    382.215       |\n",
      "| LTs_SP12H2_A1_I  | True        |  859.422 | -425.711 |  26169.1         |    259.1   |     65.2004 |   0.0169497  |    106.291   |     7.87295e-07 |    210.967 |    382.459       |\n",
      "| LTs_SsP12H2_I    | True        |  855.181 | -424.59  |  35779.9         |    354.256 |     62.023  |   0.0183742  |    110.469   |     0           |    210.705 |    383.197       |\n",
      "| LTs_SsP12H2_A1_I | True        |  859.165 | -424.583 |  37348.7         |    369.789 |    105.252  |   0.0199757  |    109.972   |    45.8067      |    211.086 |    426.311       |\n",
      "| LTs_SsP12H1      | True        |  955.569 | -475.784 |  82994.4         |    805.771 |     23.5554 |   0.00379699 |    211.524   |     0           |    388.35  |    623.43        |\n",
      "| LTs_SsP12H2      | True        | 1049.11  | -522.556 | 643837           |   6374.62  |    519.648  | 217.625      |    165.74    |     0           |   5042.68  |   5728.07        |\n",
      "| LTs_SsP12H3_A1   | True        |  851.441 | -421.721 |      1.19689e+07 | 119689     |   2682.93   |   0.0176504  |   5390.93    |    93.0883      |    206.211 |   8280.07        |\n",
      "| LTs_SsP12H3_A1_I | True        |  854.962 | -422.481 |      1.17318e+07 | 117318     |   3364.36   |   0.0175309  |   6742.54    |     9.64937     |    207.166 |  10314.1         |\n",
      "| LTs_SsP12H3_I    | True        |  850.964 | -422.482 |      1.17278e+07 | 117278     |   3367.65   |   0.0169296  |   6766.7     |     0           |    206.735 |  10341.1         |\n",
      "| LTs_SsP12H3      | True        | 1041.91  | -518.954 |      1.28644e+07 | 128644     |   1383.86   | 206.402      |   1962.84    |     0           |   7534.58  |  10881.3         |\n",
      "| LTs_SP12H3_I     | True        |  850.205 | -423.103 |      1.1621e+07  | 116210     |   3694.73   |   0.0165066  |   7411.58    |     0           |    206.517 |  11312.8         |\n",
      "| LTs_SP12H3_A1_I  | True        |  854.205 | -423.103 |      1.1621e+07  | 116210     |   3694.77   |   0.0165058  |   7411.67    |     2.13697e-08 |    206.735 |  11313.2         |\n",
      "| LTs_SP12H3_A1    | True        |  904.06  | -449.03  |      1.1802e+07  | 118020     |  41873.1    |   1.0522     |   2932.92    | 40673           |    274.626 |  45080.6         |\n",
      "| LTs_SP12H2       | True        | 1047.11  | -522.556 | 643634           |   6372.61  |    519.795  | 217.687      |    165.786   |     0           | 180380     | 181065           |\n",
      "| LTs_SP12H1       | True        | 1068.7   | -533.352 | 146859           |   1425.81  |    525.632  | 229.629      |    116.929   |     0           | 189384     | 190026           |\n",
      "| LTs_SP12H3       | True        | 1039.91  | -518.954 |      1.28644e+07 | 128644     |   1384.01   | 206.424      |   1963.05    |     0           | 188926     | 192273           |\n",
      "| LTs_SP12H4_I     | True        |  851.699 | -423.849 |      1.34562e+07 | 134562     | 184151      |   0.0163387  | 907136       |     0           |    206.524 |      1.09149e+06 |\n",
      "| LTs_SP12H4_A1_I  | True        |  855.699 | -423.849 |      1.34562e+07 | 134562     | 184151      |   0.0163386  | 907136       |     1.80323e-07 |    206.746 |      1.09149e+06 |\n",
      "| LTs_SsP12H4_I    | True        |  852.917 | -423.458 |      1.34562e+07 | 134562     | 184153      |   0.0166751  | 907153       |     0           |    207.003 |      1.09151e+06 |\n",
      "| LTs_SsP12H4_A1_I | True        |  856.916 | -423.458 |      1.34561e+07 | 134561     | 184160      |   0.0170025  | 907154       |     9.38718     |    207.231 |      1.09152e+06 |\n",
      "| LTs_SsP12H4_A1   | True        |  899.639 | -445.82  |      1.34611e+07 | 134611     | 185298      |   0.0385163  | 908079       |  1530.67        |    290.526 |      1.09367e+06 |\n",
      "| LTs_SsP12H4      | True        |  898.01  | -447.005 |      1.34789e+07 | 134789     | 184302      |   0.0134499  | 908049       |     0           |   5874.34  |      1.09822e+06 |\n",
      "| LTs_SP12H4_A1    | True        |  905.55  | -449.775 |      1.29721e+07 | 129721     | 212836      |   1.05391    | 910603       | 40835.3         |    274.692 |      1.12371e+06 |\n",
      "| LTs_SP12H4       | True        | 1041.39  | -519.697 |      1.35692e+07 | 135692     | 184606      | 205.626      | 907152       |     0           | 178442     |      1.2702e+06  |\n"
     ]
    }
   ],
   "source": [
    "results.summary(sort=\"agg\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 68,
   "id": "d67176c7-efc8-4a3f-99de-8977b8092490",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "image/png": "[encoded data, 131980 characters]\n",
      "text/plain": [
       "<Figure size 864x576 with 8 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "results.plot_summary(sort=\"agg\", num=8, figsize=(12,8))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "id": "aa54e15f-6ad4-48ba-9272-a22056211e93",
   "metadata": {},
   "outputs": [],
   "source": [
    "r=results.get_best_result(sort=\"agg\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 57,
   "id": "4f9c67b5-75bf-4d5b-b846-d1cdf6424f38",
   "metadata": {
    "tags": []
   },
   "outputs": [
    {
     "data": {
      "image/png": "[encoded data, 88688 characters]\n",
      "text/plain": [
       "<Figure size 864x576 with 5 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig = r.plot_summary(figsize=(12,8))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "2db8471b-2bfa-48ff-9ee3-43504c23b997",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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