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<div class="section" id="s5p-l2-no2">
<h1>S5P_L2_NO2</h1>
<div class="section" id="variables">
<h2>Variables</h2>
<p>The table below lists the variables that are present in the HARP product that results from an ingestion of <code class="docutils literal notranslate"><span class="pre">S5P_L2_NO2</span></code> data.</p>
<table border="1" class="colwidths-given docutils">
<colgroup>
<col width="25%" />
<col width="5%" />
<col width="15%" />
<col width="15%" />
<col width="40%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">field name</th>
<th class="head">type</th>
<th class="head">dimensions</th>
<th class="head">unit</th>
<th class="head">description</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td><strong>scan_subindex</strong></td>
<td>int16</td>
<td>{<em>time</em>}</td>
<td> </td>
<td>pixel index (0-based) within the scanline</td>
</tr>
<tr class="row-odd"><td><strong>datetime_start</strong></td>
<td>double</td>
<td>{<em>time</em>}</td>
<td>[seconds since 2010-01-01]</td>
<td>start time of the measurement</td>
</tr>
<tr class="row-even"><td><strong>datetime_length</strong></td>
<td>double</td>
<td> </td>
<td>[s]</td>
<td>duration of the measurement</td>
</tr>
<tr class="row-odd"><td><strong>orbit_index</strong></td>
<td>int32</td>
<td> </td>
<td> </td>
<td>absolute orbit number</td>
</tr>
<tr class="row-even"><td><strong>validity</strong></td>
<td>int32</td>
<td>{<em>time</em>}</td>
<td> </td>
<td>processing quality flag</td>
</tr>
<tr class="row-odd"><td><strong>latitude</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree_north]</td>
<td>latitude of the ground pixel center (WGS84)</td>
</tr>
<tr class="row-even"><td><strong>longitude</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree_east]</td>
<td>longitude of the ground pixel center (WGS84)</td>
</tr>
<tr class="row-odd"><td><strong>latitude_bounds</strong></td>
<td>float</td>
<td>{<em>time</em>, 4}</td>
<td>[degree_north]</td>
<td>latitudes of the ground pixel corners (WGS84)</td>
</tr>
<tr class="row-even"><td><strong>longitude_bounds</strong></td>
<td>float</td>
<td>{<em>time</em>, 4}</td>
<td>[degree_east]</td>
<td>longitudes of the ground pixel corners (WGS84)</td>
</tr>
<tr class="row-odd"><td><strong>sensor_latitude</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree_north]</td>
<td>latitude of the geodetic sub-satellite point (WGS84)</td>
</tr>
<tr class="row-even"><td><strong>sensor_longitude</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree_east]</td>
<td>longitude of the goedetic sub-satellite point (WGS84)</td>
</tr>
<tr class="row-odd"><td><strong>sensor_altitude</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[m]</td>
<td>altitude of the satellite with respect to the geodetic sub-satellite point (WGS84)</td>
</tr>
<tr class="row-even"><td><strong>solar_zenith_angle</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree]</td>
<td>zenith angle of the Sun at the ground pixel location (WGS84); angle measured away from the vertical</td>
</tr>
<tr class="row-odd"><td><strong>solar_azimuth_angle</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree]</td>
<td>azimuth angle of the Sun at the ground pixel location (WGS84); angle measured East-of-North</td>
</tr>
<tr class="row-even"><td><strong>sensor_zenith_angle</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree]</td>
<td>zenith angle of the satellite at the ground pixel location (WGS84); angle measured away from the vertical</td>
</tr>
<tr class="row-odd"><td><strong>sensor_azimuth_angle</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[degree]</td>
<td>azimuth angle of the satellite at the ground pixel location (WGS84); angle measured East-of-North</td>
</tr>
<tr class="row-even"><td><strong>pressure_bounds</strong></td>
<td>double</td>
<td>{<em>time</em>, <em>vertical</em>, 2}</td>
<td>[Pa]</td>
<td>pressure boundaries</td>
</tr>
<tr class="row-odd"><td><strong>tropospheric_NO2_column_number_density</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>tropospheric vertical column of NO2</td>
</tr>
<tr class="row-even"><td><strong>tropospheric_NO2_column_number_density_uncertainty</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>uncertainty of the tropospheric vertical column of NO2 (standard error)</td>
</tr>
<tr class="row-odd"><td><strong>tropospheric_NO2_column_number_density_validity</strong></td>
<td>int8</td>
<td>{<em>time</em>}</td>
<td> </td>
<td>continuous quality descriptor, varying between 0 (no data) and 100 (full quality data)</td>
</tr>
<tr class="row-even"><td><strong>tropospheric_NO2_column_number_density_amf</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>tropospheric air mass factor, computed by integrating the altitude dependent air mass factor over the atmospheric layers from the surface up to and including the layer with the tropopause</td>
</tr>
<tr class="row-odd"><td><strong>tropospheric_NO2_column_number_density_avk</strong></td>
<td>float</td>
<td>{<em>time</em>, <em>vertical</em>}</td>
<td>[]</td>
<td>averaging kernel for the tropospheric vertical column number density of NO2</td>
</tr>
<tr class="row-even"><td><strong>NO2_column_number_density</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>total vertical column of NO2 (ratio of the slant column density of NO2 and the total air mass factor)</td>
</tr>
<tr class="row-odd"><td><strong>NO2_column_number_density_uncertainty</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>uncertainty of the total vertical column of NO2 (standard error)</td>
</tr>
<tr class="row-even"><td><strong>NO2_column_number_density_amf</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>total air mass factor, computed by integrating the altitude dependent air mass factor over the atmospheric layers from the surface to top-of-atmosphere</td>
</tr>
<tr class="row-odd"><td><strong>NO2_column_number_density_avk</strong></td>
<td>float</td>
<td>{<em>time</em>, <em>vertical</em>}</td>
<td>[]</td>
<td>averaging kernel for the air mass factor correction, describing the NO2 profile sensitivity of the vertical column density</td>
</tr>
<tr class="row-even"><td><strong>stratospheric_NO2_column_number_density</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>stratospheric vertical column of NO2</td>
</tr>
<tr class="row-odd"><td><strong>stratospheric_NO2_column_number_density_uncertainty</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>uncertainty of the stratospheric vertical column of NO2 (standard error)</td>
</tr>
<tr class="row-even"><td><strong>stratospheric_NO2_column_number_density_amf</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>stratospheric air mass factor</td>
</tr>
<tr class="row-odd"><td><strong>stratospheric_NO2_column_number_density_avk</strong></td>
<td>float</td>
<td>{<em>time</em>, <em>vertical</em>}</td>
<td>[]</td>
<td>averaging kernel for the stratospheric vertical column number density of NO2</td>
</tr>
<tr class="row-even"><td><strong>NO2_slant_column_number_density</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>slant column of NO2</td>
</tr>
<tr class="row-odd"><td><strong>NO2_slant_column_number_density_uncertainty</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[mol/m^2]</td>
<td>uncertainty of the slant column of NO2</td>
</tr>
<tr class="row-even"><td><strong>cloud_fraction</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>cloud fraction for NO2 fitting window</td>
</tr>
<tr class="row-odd"><td><strong>absorbing_aerosol_index</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>aerosol index</td>
</tr>
<tr class="row-even"><td><strong>cloud_albedo</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>cloud albedo</td>
</tr>
<tr class="row-odd"><td><strong>cloud_pressure</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[Pa]</td>
<td>cloud pressure</td>
</tr>
<tr class="row-even"><td><strong>surface_albedo</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>surface albedo</td>
</tr>
<tr class="row-odd"><td><strong>surface_altitude</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[m]</td>
<td>surface altitude</td>
</tr>
<tr class="row-even"><td><strong>surface_altitude_uncertainty</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[m]</td>
<td>surface altitude precision</td>
</tr>
<tr class="row-odd"><td><strong>surface_pressure</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[Pa]</td>
<td>surface pressure</td>
</tr>
<tr class="row-even"><td><strong>snow_ice_type</strong></td>
<td>int8</td>
<td>{<em>time</em>}</td>
<td> </td>
<td>surface snow/ice type; enumeration values: snow_free_land (0), sea_ice (1), permanent_ice (2), snow (3), ocean (4)</td>
</tr>
<tr class="row-odd"><td><strong>sea_ice_fraction</strong></td>
<td>float</td>
<td>{<em>time</em>}</td>
<td>[]</td>
<td>sea-ice concentration (as a fraction)</td>
</tr>
<tr class="row-even"><td><strong>tropopause_pressure</strong></td>
<td>double</td>
<td>{<em>time</em>}</td>
<td>[Pa]</td>
<td>tropopause pressure</td>
</tr>
<tr class="row-odd"><td><strong>index</strong></td>
<td>int32</td>
<td>{<em>time</em>}</td>
<td> </td>
<td>zero-based index of the sample within the source product</td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="ingestion-options">
<h2>Ingestion options</h2>
<p>The table below lists the available ingestion options for <code class="docutils literal notranslate"><span class="pre">S5P_L2_NO2</span></code> products.</p>
<table border="1" class="colwidths-given docutils">
<colgroup>
<col width="15%" />
<col width="25%" />
<col width="60%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">option name</th>
<th class="head">legal values</th>
<th class="head">description</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>total_column</td>
<td>summed, total</td>
<td>whether to use nitrogendioxide_total_column (which is derived from the total slant column diveded by the total amf) or nitrogendioxide_summed_total_column (which is the sum of the retrieved tropospheric and statospheric columns); option values are ‘summed’ (default) and ‘total’</td>
</tr>
<tr class="row-odd"><td>cloud_fraction</td>
<td>radiance</td>
<td>whether to ingest the cloud fraction (default) or the radiance cloud fraction (cloud_fraction=radiance)</td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="mapping-description">
<h2>Mapping description</h2>
<p>The table below details where and how each variable was retrieved from the input product.</p>
<table border="1" class="docutils">
<colgroup>
<col width="19%" />
<col width="5%" />
<col width="76%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">field name</th>
<th class="head" colspan="2">mapping description</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td><strong>scan_subindex</strong></td>
<td><em>description</em></td>
<td>the scanline and pixel dimensions are collapsed into a temporal dimension; the index of the pixel within the scanline is computed as the index on the temporal dimension modulo the number of scanlines</td>
</tr>
<tr class="row-odd"><td rowspan="2"><strong>datetime_start</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/time, /PRODUCT/delta_time[]</strong></td>
</tr>
<tr class="row-even"><td><em>description</em></td>
<td>time converted from milliseconds since a reference time (given as seconds since 2010-01-01) to seconds since 2010-01-01 (using 86400 seconds per day); the time associated with a scanline is repeated for each pixel in the scanline</td>
</tr>
<tr class="row-odd"><td rowspan="2"><strong>datetime_length</strong></td>
<td><em>path</em></td>
<td><strong>/@time_coverage_resolution</strong></td>
</tr>
<tr class="row-even"><td><em>description</em></td>
<td>the measurement length is parsed assuming the ISO 8601 ‘PT%(interval_seconds)fS’ format</td>
</tr>
<tr class="row-odd"><td><strong>orbit_index</strong></td>
<td><em>path</em></td>
<td><strong>/@orbit</strong></td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>validity</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/processing_quality_flags[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>the uint32 data is cast to int32</td>
</tr>
<tr class="row-even"><td><strong>latitude</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/latitude[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>longitude</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/longitude[]</strong></td>
</tr>
<tr class="row-even"><td><strong>latitude_bounds</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/latitude_bounds[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>longitude_bounds</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/longitude_bounds[]</strong></td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>sensor_latitude</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_latitude[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>the satellite latitude associated with a scanline is repeated for each pixel in the scanline</td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>sensor_longitude</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_longitude[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>the satellite longitude associated with a scanline is repeated for each pixel in the scanline</td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>sensor_altitude</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_altitude[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>the satellite altitude associated with a scanline is repeated for each pixel in the scanline</td>
</tr>
<tr class="row-even"><td><strong>solar_zenith_angle</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/solar_zenith_angle[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>solar_azimuth_angle</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/solar_azimuth_angle[]</strong></td>
</tr>
<tr class="row-even"><td><strong>sensor_zenith_angle</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/viewing_zenith_angle[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>sensor_azimuth_angle</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/viewing_azimuth_angle[]</strong></td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>pressure_bounds</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/tm5_constant_a[], /PRODUCT/tm5_constant_b[], /PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>pressure in Pa at level k is derived from surface pressure in Pa as: tm5_constant_a[k] + tm5_constant_b[k] * surface_pressure[]; the top of atmosphere pressure is clamped to 1e-3 Pa</td>
</tr>
<tr class="row-even"><td><strong>tropospheric_NO2_column_number_density</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/nitrogendioxide_tropospheric_column[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>tropospheric_NO2_column_number_density_uncertainty</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/nitrogendioxide_tropospheric_column_precision[]</strong></td>
</tr>
<tr class="row-even"><td><strong>tropospheric_NO2_column_number_density_validity</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/qa_value</strong></td>
</tr>
<tr class="row-odd"><td><strong>tropospheric_NO2_column_number_density_amf</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/air_mass_factor_troposphere[]</strong></td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>tropospheric_NO2_column_number_density_avk</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/averaging_kernel[], /PRODUCT/air_mass_factor_total[], /PRODUCT/air_mass_factor_troposphere[], /PRODUCT/tm5_tropopause_layer_index[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>averaging_kernel[layer] = if layer <= tm5_tropopause_layer_index then averaging_kernel[layer] * air_mass_factor_total / air_mass_factor_troposphere else 0</td>
</tr>
<tr class="row-even"><td rowspan="4"><strong>NO2_column_number_density</strong></td>
<td><em>condition</em></td>
<td>total_column=summed or total_column unset</td>
</tr>
<tr class="row-odd"><td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogendioxide_summed_total_column[]</strong></td>
</tr>
<tr class="row-even"><td><em>condition</em></td>
<td>total_column=total</td>
</tr>
<tr class="row-odd"><td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogendioxide_total_column[]</strong></td>
</tr>
<tr class="row-even"><td rowspan="4"><strong>NO2_column_number_density_uncertainty</strong></td>
<td><em>condition</em></td>
<td>total_column=summed or total_column unset</td>
</tr>
<tr class="row-odd"><td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogendioxide_summed_total_column_precision[]</strong></td>
</tr>
<tr class="row-even"><td><em>condition</em></td>
<td>total_column=total</td>
</tr>
<tr class="row-odd"><td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogendioxide_total_column_precision[]</strong></td>
</tr>
<tr class="row-even"><td><strong>NO2_column_number_density_amf</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/air_mass_factor_total[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>NO2_column_number_density_avk</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/averaging_kernel[]</strong></td>
</tr>
<tr class="row-even"><td><strong>stratospheric_NO2_column_number_density</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/nitrogendioxide_tropospheric_column[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>stratospheric_NO2_column_number_density_uncertainty</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/nitrogendioxide_tropospheric_column_precision[]</strong></td>
</tr>
<tr class="row-even"><td><strong>stratospheric_NO2_column_number_density_amf</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/air_mass_factor_troposphere[]</strong></td>
</tr>
<tr class="row-odd"><td rowspan="2"><strong>stratospheric_NO2_column_number_density_avk</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/averaging_kernel[], /PRODUCT/air_mass_factor_total[], /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/air_mass_factor_stratosphere[], /PRODUCT/tm5_tropopause_layer_index[]</strong></td>
</tr>
<tr class="row-even"><td><em>description</em></td>
<td>averaging_kernel[layer] = if layer > tm5_tropopause_layer_index then averaging_kernel[layer] * air_mass_factor_total / air_mass_factor_stratosphere else 0</td>
</tr>
<tr class="row-odd"><td><strong>NO2_slant_column_number_density</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogendioxide_slant_column_density[]</strong></td>
</tr>
<tr class="row-even"><td><strong>NO2_slant_column_number_density_uncertainty</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogendioxide_slant_column_density_precision[]</strong></td>
</tr>
<tr class="row-odd"><td rowspan="4"><strong>cloud_fraction</strong></td>
<td><em>condition</em></td>
<td>cloud_fraction unset</td>
</tr>
<tr class="row-even"><td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/cloud_fraction_crb_nitrogendioxide_window[]</strong></td>
</tr>
<tr class="row-odd"><td><em>condition</em></td>
<td>cloud_fraction=radiance</td>
</tr>
<tr class="row-even"><td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/cloud_radiance_fraction_nitrogendioxide_window[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>absorbing_aerosol_index</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/aerosol_index_354_388</strong></td>
</tr>
<tr class="row-even"><td><strong>cloud_albedo</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_albedo_crb</strong></td>
</tr>
<tr class="row-odd"><td><strong>cloud_pressure</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_pressure_crb</strong></td>
</tr>
<tr class="row-even"><td><strong>surface_albedo</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_albedo_nitrogendioxide_window</strong></td>
</tr>
<tr class="row-odd"><td><strong>surface_altitude</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_altitude[]</strong></td>
</tr>
<tr class="row-even"><td><strong>surface_altitude_uncertainty</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_altitude_precision[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>surface_pressure</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[]</strong></td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>snow_ice_type</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/snow_ice_flag[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>0: snow_free_land (0), 1-100: sea_ice (1), 101: permanent_ice (2), 103: snow (3), 255: ocean (4), other values map to -1</td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>sea_ice_fraction</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/snow_ice_flag[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>if 1 <= snow_ice_flag <= 100 then snow_ice_flag/100.0 else 0.0</td>
</tr>
<tr class="row-even"><td rowspan="2"><strong>tropopause_pressure</strong></td>
<td><em>path</em></td>
<td><strong>/PRODUCT/tm5_constant_a[], /PRODUCT/tm5_constant_b[], /PRODUCT/tm5_tropopause_layer_index[], /PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>pressure in Pa at tropause is derived from the upper bound of the layer with tropopause layer index k: tm5_constant_a[k + 1] + tm5_constant_b[k + 1] * surface_pressure[]</td>
</tr>
</tbody>
</table>
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