<div dir="ltr"><div><b>Please submit all <span class="gmail-il">WRF</span> Support questions to the WRF online user support forum:</b></div><span class="gmail-im"><div><a href="http://forum.mmm.ucar.edu" target="_blank">http://forum.mmm.ucar.edu</a></div><div><br></div><div>You will need to create a user ID and password to post, but this should only take a minute.</div><div><br></div><div>Thank you for your cooperation,</div><div><span class="gmail-il">WRF</span> Support Team <br></div><div>===================</div><div><br></div><div>Attached is the wrf_user.f90 code. You will have to find the answer in this library.</div><div>NCL developers did not create this code.</div><div>=====================</div><div>Good luck<br></div><div><br></div><div><br></div></span></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 12, 2019 at 8:35 AM Prashanth Bhalachandran via ncl-talk <<a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="ltr">Sorry for reposting, can someone help me with this please? </div><div dir="ltr">—————</div><div dir="ltr"><br><div dir="ltr"><div class="gmail_default" style="font-family:garamond,times new roman,serif">Dear NCL'ers, </div><div class="gmail_default" style="font-family:garamond,times new roman,serif">As we know WRF's outputs are originally in Eta coordinates. I am trying to understand the logic of how the height (z) is calculated in NCL's wrfusergetvar function. </div><div class="gmail_default" style="font-family:garamond,times new roman,serif"><br></div><div class="gmail_default" style="font-family:garamond,times new roman,serif"><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)"> z  = <a href="https://www.ncl.ucar.edu/Document/Functions/WRF_arw/wrf_user_getvar.shtml" style="margin:0px;padding:0px;text-decoration-line:none;color:rgb(133,45,133);font-family:verdana,sans-serif" target="_blank"><strong style="margin:0px;padding:0px">wrf_user_getvar</strong></a>(a, "z",time)        ; grid point height</pre><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)">I expect that the height at each eta level should change as a function of x,y, and time. </pre><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)">Can someone tell me how the above function calculates this z? Is there an hydrostatic assumption? In other words, is the z </pre><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)">just geopotential height? Or is it the actual height itself? 
<span style="font-size:13.3333px"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)"><span style="font-size:13.3333px">Thank you, </span>
</pre><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)">Prashanth </pre><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-size:13.3333px;line-height:12pt;font-family:courier;border-style:solid;border-width:0px 0px 15px;border-color:transparent;color:rgb(0,0,0)"><br></pre></div></div>
</div></div>_______________________________________________<br>
ncl-talk mailing list<br>
<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" rel="noreferrer" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a></blockquote></div>