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<html>
<head>
<title>WRFDA Updates for Version 3.7.1</title>
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<meta name="KEYWORDS" content="meteorology, mesoscale, microscale, weather modeling, forecasting weather, weather prediction, predictability, cloud systems, boundary layers, surface-atmosphere interactions, convective cloud systems, atmospheric chemistry, precipitating weather systems, wildfire research, National Center for Atmospheric Research">
<meta name="DESCRIPTION" content="WRF Data Assimilation Users homepage">
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<td width="100%" height="838" valign="top" bgcolor="#CBFFCD"><table width="780" border="0" cellpadding="0" cellspacing="0">
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<td height="842" bgcolor="#009933"><p align="right"> </p>
<p align="center"><a href="system.html" class="leftnavlink">System Overview</a></p>
<p align="center"><a href="updates-3.9.html" class="leftnavlink">WRFDA V3.9</a></p>
<p align="center"><a href="updates-3.8.1.html" class="leftnavlink">WRFDA V3.8.1</a></p>
<p align="center"><a href="updates-3.8.html" class="leftnavlink">WRFDA V3.8</a></p>
<p align="center" style="border-width: 5px;border-style: solid;border-color: #CBFFCD;background-color: #CBFFCD;font-family: Arial; line-height: 10pt;font-weight: bold;">WRFDA V3.7.1</p>
<p align="center"><a href="updates-3.7.html" class="leftnavlink">WRFDA V3.7</a></p>
<p align="center"><a href="updates-3.6.1.html" class="leftnavlink">WRFDA V3.6.1</a></p>
<p align="center"><a href="updates-3.6.html" class="leftnavlink">WRFDA V3.6</a></p>
<p align="center"><a href="updates-3.5.1.html" class="leftnavlink">WRFDA V3.5.1</a></p>
<p align="center"><a href="updates-3.5.0.1.html" class="leftnavlink">WRFDA V3.5.0.1</a></p>
<p align="center"><a href="updates-3.5.html" class="leftnavlink">WRFDA V3.5</a></p>
<p align="center"><a href="updates-3.4.1.html" class="leftnavlink">WRFDA V3.4.1</a></p>
<p align="center"><a href="updates-3.4.html" class="leftnavlink">WRFDA V3.4</a></p>
<p align="center"><a href="updates-older.html" class="leftnavlink">Older versions</a></p>
<p align="center"><a href="tutorial.html" class="leftnavlink">Tutorials</a></p>
<p align="center"><a href="download/tools.html" class="leftnavlink">Tools</a></p>
<p align="center"><a href="known-problems.html" class="leftnavlink">Known Problems and Fixes</a></p></td>
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<p class="pagetitle">WRFDA Version 3.7.1: UPDATES</p>
<blockquote>
<h2>WRFDA Version 3.7.1 was released on August 14, 2015. </h2>
<p class="bodytext">This is primarily a bug-fix release.
<h3><big>Updated features:</big></h3>
<ul class="bodytext"><li>Bugs listed at the <a href="known-problems.html#V3_7">Known Problems page</a> have been fixed. These bugs include the following:</li>
<ul class="bodytext"><li>A problem with the new "use_radar_rqv" option introduced in Version 3.7 (updated version is recommended)</li>
<li>Crashes and/or incorrect results for 4DVAR when assimilating radiance data with RTTOV with the option "rttov_emis_atlas_ir=1"</li></ul>
<li>Other code improvements include:</li>
<ul class="bodytext"><li>Improvements to OBSPROC:
<ul><li>Fixing display problems for large numbers of observations</li>
<li>Avoiding problems with default observation error values</li></ul>
<li><del>An incorrect interpolation of U and V in new CV7 BE option has been fixed (minor impact on results)</del><br><b>The above is an incomplete bug fix; the 3.7.1 release version still has a major bug for the CV7 BE option which will lead to incorrect results: <a href="known-problems.html#V3_7_1">see this page</a> for a solution.</b></li></ul>
<li><a href="download/wrfplus.html">WRFPLUS</a> (WRF adjoint and tangent linear model) has also been updated to V3.7.1.</li>
</ul>
<p class="bodytext">For instructions on compiling and running the latest version of WRFDA, please refer to the <a href="Docs/user_guide_V3.7.1/WRFDA_Users_Guide.pdf">User's Guide</a></p>
</blockquote>
<p class="pagetitle">Helpful links</p>
<blockquote>
<li class="bodytext"><b><big><a href="./download/get_source.html">Download this version of WRFDA (V3.7.1) here</a></big></b><br><br></li>
<li class="bodytext"><big><a href="./Docs/user_guide_V3.7.1/users_guide_chap6.htm#_Installing_WRF-Var">Compiling WRFDA</a></big></li>
<li class="bodytext"><big><a href="./Docs/user_guide_V3.7.1/users_guide_chap6.htm#_Running_WRFDA">Running WRFDA</a></big></li>
<li class="bodytext"><big><a href="./Docs/user_guide_V3.7.1/users_guide_chap6.htm#_Description_of_Namelist_2">List and description of namelist variables</a></big></li>
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