<div dir="ltr"><div>Jonathan,<br></div>I'm not sure I understand the difficulty you are facing. GrADS cannot display three-dimensional vectors, so if you want to visualize all three components to the wind, one of them will have to be displayed as contours rather than as vectors. The plot you attached makes sense if you want to look at advection of carbon monoxide along a north-south vertical cross section.<br><br>Please clarify the problem.<br><br>Jeff Duda<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 15, 2014 at 12:33 PM, Jonathan Wynn Smith <span dir="ltr"><<a href="mailto:jwsmith9@gmail.com" target="_blank">jwsmith9@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Good afternoon:<br><br>'a = ave(U.1,t=289,t=1008,1)*100'<br>'b = ave(V.1,t=289,t=1008,1)*100'<br><br>'c = ave(W.1,t=289, t=1008)*100'<br>"xcbar 1 10 0.3 0.5 -fw 0.175 -fh 0.175 -line on"<br><br><br>"set gxout vector"<br>'d skip(c,6,3);skip(u,6,3)'<br><br><br></div><div>Above, GrADS is displaying a north-south transect of carbon monoxide with vertical motion vectors.<br><br>The W variable will not display vectors by itself. I actually will display W contours but I need vectors. It seems that there has to be one of the horizontal variables displayed in conjunction W for vectors to display. I chose U in the above case. Does this mean the U component of the vertical wind?<br><br></div><div>Is it possible to print out the W vectors without the U or V components?<br><br></div><div>I have attached a figure of what I am referring to.<br></div><div><br></div><div>Thanks<span class="HOEnZb"><font color="#888888"><br>Jonathan<br></font></span></div><span class="HOEnZb"><font color="#888888"><div><div><div><br>-- <br><div dir="ltr"><span style="color:rgb(0,0,255)"><font><b>Jonathan Wynn Smith, Ph.D.</b></font></span><br><font size="1"><a href="mailto:jonathan.smith@noaa.gov" target="_blank">jonathan.smith@noaa.gov</a><br>301-683-0500<br>Postdoctoral Research Associate <br>National Academy of Science/National Research Council Associateship<br>NOAA/NESDIS/STAR/SMCD, #2844<br>5830 University Research Ct.<br>College Park, MD 20740-3818</font><br><font size="1"><i><br>Lord, you establish peace for us; all that we have accomplished you have <br>done for us. - Isaiah 26:12</i></font><br><br><br><br><br><br><br></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Graduate research assistant<br>University of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of Storms<br>
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