Changeset 08c9091 in flex_extract.git for Documentation/html/quick_start.html
- Timestamp:
- Aug 12, 2020, 8:47:31 AM (4 years ago)
- Branches:
- master, ctbto, dev
- Children:
- 73308e0
- Parents:
- ee9aaec
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Documentation/html/quick_start.html
r6931f61 r08c9091 551 551 </dd> 552 552 <dt>Vertical velocity</dt><dd><p>The vertical velocity for <code class="docutils literal notranslate"><span class="pre">FLEXPART</span></code> is not directly available from MARS and has to be calculated. 553 There are several options for this, and the following parameters are responsible for the selection. 553 There are several options for this, and the following parameters are responsible for the selection. See <a class="reference internal" href="Documentation/vertco.html"><span class="doc">Vertical wind</span></a> for a detailed explanation. Using <code class="docutils literal notranslate"><span class="pre">ETADIFF</span> <span class="pre">1</span></code>, <code class="docutils literal notranslate"><span class="pre">OMEGA</span> <span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">OMEGADIFF</span> <span class="pre">1</span></code> is recommended for debugging and testing only. 554 554 Usually, one has to decide between <code class="docutils literal notranslate"><span class="pre">GAUSS</span> <span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">ETA</span> <span class="pre">1</span></code>. <code class="docutils literal notranslate"><span class="pre">GAUSS</span> <span class="pre">1</span></code> means that spectral fields of the horizontal wind fields and the divergence are retrieved and that the vertical velocity is calculate using the continuity equation. <code class="docutils literal notranslate"><span class="pre">ETA</span> <span class="pre">1</span></code> means that horizontal wind fields etadot are retrieved on a regular lat-lon grid. It is recommended to use <code class="docutils literal notranslate"><span class="pre">ETA</span> <span class="pre">1</span></code> where possible, as there is a substantial computational overhead for solving the continuity equation.</p> 555 555 <div class="literal-block-wrapper docutils container" id="id5">
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