<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000'>The best way to do vertical interpolation of WRF output is to use one of the postprocessing tools. These include ARWpost (for WRF-ARW only), UPP (ARW and NMM), NCL and RIP. If you're running WRF-ARW, then ARWpost is probably the easiest to use, although the others can calculate many more diagnostic fields.<div><br></div><div>Best regards,<br><br><div><span name="x"></span>Eric L. Altshuler<br>Research Scientist<br>Center for Ocean-Land-Atmosphere Studies<br>253 Research Hall, Mail Stop 6C5<div>George Mason University</div><div>4400 University Drive<br>Fairfax, VA 22030 USA<br><br>E-mail: ela@cola.iges.org<br>Phone: (703) 993-5725<br>Fax: (703) 993-5770</div><span name="x"></span><br></div><br><hr id="zwchr"><b>From: </b>"孙佳" <sunjiaouc@sina.com><br><b>To: </b>"wrf-users" <wrf-users@ucar.edu><br><b>Sent: </b>Wednesday, May 21, 2014 9:21:28 PM<br><b>Subject: </b>[Wrf-users] Transforming eta levels to p levels<br><br>
<div><font size="2" face="Verdana">Dear all,</font></div>
<div style="TEXT-INDENT: 2em"> </div>
<div style="TEXT-INDENT: 2em">I was doing the wrfout data analysis in MATLAB.
Data in "wrfout_*" files are constructed in eta levels, and this is not
convinient for atmosphere analysis. </div>
<div style="TEXT-INDENT: 2em"> </div>
<div style="TEXT-INDENT: 2em">with the following formula, I get eta values
but different from those in namelist files.</div>
<div style="TEXT-INDENT: 2em"> eta
= (P0-P_TOP)/(PSFC-P_TOP) where P0=P+PB, and P PB PSFC P_TOP
are all variables in wrfout_d* files</div>
<div style="TEXT-INDENT: 2em"> </div>
<div style="TEXT-INDENT: 2em">So, I am not sure that it is right if I use
P0 = P+PB to do the p_level interpretion.</div>
<div style="TEXT-INDENT: 2em"> </div>
<div style="TEXT-INDENT: 2em">Can you give me some advise? I will be very
appreciate about it!</div>
<div style="TEXT-INDENT: 2em"> </div>
<div style="TEXT-INDENT: 2em">Thank you all!</div>
<div style="TEXT-INDENT: 2em"> </div>
<div><font size="2" face="Verdana"></font> </div>
<div align="left"><font color="#c0c0c0" size="2" face="Verdana">2014-05-22
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<div><font size="3" face="微软雅黑">谨祝顺祺！</font></div>
<div>WITH BEST WISHES!</div>
<div> </div>
<div>JIA, SUN</div>
<div>TEL: (+86)15077857866</div>
<div>E-MAIL: SUNJIAOUC@SINA.COM</div>
<div>PHYSICAL OCEANOGRAPHY LAB, HOHAI UNIVERSITY</div>
<div>1 XIKANG, GULOU, NANJING, JIANGSU PROVINCE, CHINA, 210098 </div>
<div>SOA, THE SECOND INSTITUDE OF OCEANOGRAPHY</div>
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310012</div></div> </div></div></span></font></div></font>
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