<div dir="ltr">I mean,<div>average wind speed at specific z level, which means 0(surface)to pblh(pblh meter)!</div><div>And pblh changes by time series. </div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">2020년 12월 15일 (화) 오전 5:39, Dennis Shea <<a href="mailto:shea@ucar.edu">shea@ucar.edu</a>>님이 작성:<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="ltr"><div>Perhaps, I don't understand but</div><div>   pblws_avg = <a href="http://www.ncl.ucar.edu/Document/Functions/Built-in/dim_avg_n.shtml" target="_blank"><b>dim_avg_n</b></a>(pblws, 0)</div><div>   printVarSummary(pblws_avg)             ;   (y,x)</div><div><br></div><div><br></div><div>    <br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Dec 13, 2020 at 11:54 PM 소윤영 via ncl-talk <<a href="mailto:ncl-talk@mailman.ucar.edu" target="_blank">ncl-talk@mailman.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="ltr">Dear NCL users,<div><br></div><div>I want to draw a 'ventilation index' calculated with pblh(m), wind speed, z level.</div><div><br></div><div>-------------------------------------------------------------------------------------------</div><div>pblh=wrf_user_getvar(input_fils,"PBLH",-1)   ;PBL HEIGHT [m]<br><br>uvm10 =wrf_user_getvar(input_fils,"uvmet10",-1)    ; 10m U and V components <br>u10 = uvm10(0,:,:,:)<br>v10 = uvm10(1,:,:,:)<br>ws = sqrt(u10^2+v10^2)<br><br>pblws:= pblh*ws         ; 3d[t,y,x]<br>----------------------------------------------------------------------------------------------</div><div><br></div><div>this is the simple version of this idea. But i wnat to get a  average windspeed at  0~z level which means 0~pblh(m).</div><div><br></div><div>I will be grateful for help</div></div>
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