Hi，users<br><br>I'm running mcip 3.2 with wrfout file as CMAQ needs meteorology infomation input,but it prompt the following error msg.<br><img src="cid:BDE2B4E4@F0662860.FF10CC4B.jpg"><br><br>I modified some options in namelist.input and Registry.EM according to FAQs for mcip3.2:<br>###########################################<br><o:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="chmetcnv"></o:smarttagtype><!--[if gte mso 9]><![endif]--><!--[if gte mso 9]><![endif]--><!--[if !mso]>
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<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">I want
to run MCIP with WRF model data.<span style=""> </span>What do
I need to do?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">There
are a handful of things that need to be done in WRF to run MCIP with WRF<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">data.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>1. The WRF model must be WRFv2.0 or
newer.<span style=""> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>2. Must use the WRF-EM core.<span style=""> </span>(WRF namelist variable dyn_opt=2.<span style=""> </span>This is the<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>default.)<span style="">
</span>MCIPv3 does not support WRF-NMM (NCEP core).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>3. Output must be in WRF I/O API (using
NetCDF) format.<span style=""> </span>(WRF namelist<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>variable io_form_history=2.<span style=""> </span>This is the default.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>4. Must use non-hydrostatic dynamics in
WRF.<span style=""> </span>(WRF namelist variable<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>non_hydrostatic=.true.<span style=""> </span>This is the default.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>5. WRF output should be hourly at most.<span style=""> </span>(WRF namelist variable<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>history_interval=60, or fewer,
minutes.<span style=""> </span>The default is 180 min.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>6. The following 2D variables need to be
added to the WRF output (history)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>file:<span style="">
</span>UST, ALBEDO, EMISS, and ZNT.<span style="">
</span>Variables can be added to the history<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>file by adding "h" in the 8th
column of the WRF Registry on the line that<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US"><span style=""> </span>describes the variable.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">Also,
the water vapor mixing ratio and mixing ratios associated with the<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">explicit
moisture can go negative in WRF.<span style=""> </span>This is
a result of the mass<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">conservation
and the advection scheme used in WRF.<span style="">
</span>Negative mixing ratios will<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">cause
problems in CMAQ.<span style=""> </span>There are two namelist
variables in WRF that eliminate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">negative
mixing ratios (mp_zero_out and mp_zero_out_thresh), but they are not<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">invoked
by default.<span style=""> </span>Users need to decide whether
or not this should be<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">controlled
in WRF or downstream.<span style=""> </span>Either way, MCIPv3
will not permit negative<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">mixing
ratios to be passed to CMAQ.<span style=""> </span>In
addition, a floor value of 1.0e<st1:chmetcnv unitname="kg" sourcevalue="14" hasspace="True" negative="True" numbertype="1" tcsc="0" w:st="on">-14 kg</st1:chmetcnv>/kg<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">has been
set for water vapor mixing ratio in MCIP since negative mixing ratios<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">are
otherwise zeroed out in WRF.<span style=""> </span>A positive
water vapor mixing ratio is<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt; color: red;" lang="EN-US">required
for the aerosol model in CMAQ.<o:p></o:p></span></p>
###########################################<br><br>Maybe someone can tell me where the error locates and how to fix that?<br>Thanks in advance ！<br><br><br><div><sign signid="1"><div style="color: rgb(144, 144, 144); font-family: Arial Narrow; font-size: 12px;">------------------</div><div style="font-size: 14px; font-family: Verdana; color: rgb(0, 0, 0);">Jesse Zhang<br>College of Information Technical Science,Nankai University<br>94#, Weijin Road, Tianjin 300071<br>jessezhang1010@gmail.com<br></div></sign></div><div><qzone signid=""></qzone></div><div><taotao signid=""></taotao></div><div> </div>