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<p class=MsoNormal>Dear WRF community,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I was wondering how the diagnosed cloud fractions are
calculated in the WRF-NMM? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’ve noticed that there are low, mid, and high cloud
fractions (cfracl, cfracm, and cfrach). <o:p></o:p></p>
<p class=MsoNormal>I figure there must be embedded code that empirically
assigns a cloud fraction based on a minimum cloud mixing ratio threshold, and a
range of z-levels that pre-defines the low, mid, and high layers, but I have
not yet found it in the WRF-NMM code. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>For those with this familiarity, could you point me to the
source code where this is determine/defined? <o:p></o:p></p>
<p class=MsoNormal>What are the heights of the layers that correspond to low, mid,
and high, and the minimum mixing ratio threshold used? <o:p></o:p></p>
<p class=MsoNormal>Finally, is there a citation that could be referenced
for this information.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Your assistance is greatly appreciated.<o:p></o:p></p>
<p class=MsoNormal>Jonathan<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>***********************************************************</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Jonathan Case,
ENSCO, Inc.</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Aerospace
Sciences & Engineering Division</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Short-term
Prediction Research and Transition Center</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>320
Sparkman Drive, Room 3062</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Huntsville,
AL 35805-1912 </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Voice:
(256) 961-7504 Fax: (256) 961-7788</span><span style='font-size:
12.0pt;font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Emails: </span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><a
href="mailto:Jonathan.Case@nsstc.nasa.gov"><span style='font-family:"Arial","sans-serif";
color:blue'>Jonathan.Case@nsstc.nasa.gov</span></a></span><span
style='font-size:12.0pt;font-family:"Arial","sans-serif"'> </span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>
</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><a
href="mailto:case.jonathan@ensco.com"><span style='font-family:"Arial","sans-serif";
color:blue'>case.jonathan@ensco.com</span></a> <br>
</span><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>***********************************************************</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> </span><o:p></o:p></p>
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