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<div class="section" id="mls-l2-rhi">
<h1>MLS_L2_RHI</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">MLS_L2_RHI</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>datetime</strong></td>
<td>double</td>
<td>{<em>time</em>}</td>
<td>[seconds since 2000-01-01]</td>
<td>time of the measurement</td>
</tr>
<tr class="row-odd"><td><strong>longitude</strong></td>
<td>double</td>
<td>{<em>time</em>}</td>
<td>[degree_east]</td>
<td>tangent longitude</td>
</tr>
<tr class="row-even"><td><strong>latitude</strong></td>
<td>double</td>
<td>{<em>time</em>}</td>
<td>[degree_north]</td>
<td>tangent latitude</td>
</tr>
<tr class="row-odd"><td><strong>pressure</strong></td>
<td>double</td>
<td>{<em>vertical</em>}</td>
<td>[hPa]</td>
<td>pressure per profile level</td>
</tr>
<tr class="row-even"><td><strong>relative_humidity_ice</strong></td>
<td>double</td>
<td>{<em>time</em>, <em>vertical</em>}</td>
<td>[%]</td>
<td>relative humidity with respect to ice</td>
</tr>
<tr class="row-odd"><td><strong>relative_humidity_ice_uncertainty</strong></td>
<td>double</td>
<td>{<em>time</em>, <em>vertical</em>}</td>
<td>[%]</td>
<td>uncertainty of the relative humidity with respect to ice</td>
</tr>
<tr class="row-even"><td><strong>relative_humidity_ice_validity</strong></td>
<td>int32</td>
<td>{<em>time</em>, <em>vertical</em>}</td>
<td> </td>
<td>quality flag for the relative humidity with respect to ice</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="mapping-description">
<h2>Mapping description</h2>
<p>Bits 4 to 9 and 11 to 14 in the quality flag denote a specific error condition while bits 0 to 2 denote the severity (bit 0 error, bit 1 warning, bit 2 comment).</p>
<p>Bits 4 to 9 denote the MLS status (bit 4 HICLOUD, bit 5 LOWCLOUD, bit 6 NO_APRIORI_T, bit 7 NUM_ERROR, bit 8 TOO_FEW_RAD, bit 9 GLOB_FAILURE).</p>
<p>Bits 11 to 14 denote specific checks as specified in the EOS MLS data quality document (the pressure range, quality and convergence thresholds come from table 1.1.1 in issue 4.2 of that document): Bit 11 denotes pressure out of range, bit 12 denotes quality below threshold, bit 13 denotes convergence above threshold and bit 14 denotes a negative precision. Also, if any of the bits 11 to 14 is set, bit 0 is automatically set.</p>
<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="32%" />
<col width="12%" />
<col width="56%" />
</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 rowspan="2"><strong>datetime</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Geolocation_Fields/Time[]</strong></td>
</tr>
<tr class="row-odd"><td><em>description</em></td>
<td>the time converted from TAI93 to seconds since 2000-01-01T00:00:00</td>
</tr>
<tr class="row-even"><td><strong>longitude</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Geolocation_Fields/Longitude[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>latitude</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Geolocation_Fields/Latitude[]</strong></td>
</tr>
<tr class="row-even"><td><strong>pressure</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Geolocation_Fields/Pressure[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>relative_humidity_ice</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Data_Fields/L2gpValue[]</strong></td>
</tr>
<tr class="row-even"><td><strong>relative_humidity_ice_uncertainty</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Data_Fields/L2gpPrecision[]</strong></td>
</tr>
<tr class="row-odd"><td><strong>relative_humidity_ice_validity</strong></td>
<td><em>path</em></td>
<td><strong>/HDFEOS/SWATHS/RHI/Data_Fields/Status[]</strong></td>
</tr>
</tbody>
</table>
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