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<font style="font-size: 10pt;" face="Tahoma" size="2">Hello,</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2"><br>This is not directly about GrADS but since most of address similar problems, I guess someone on this forum will be able to answer my question.</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2"><br>I understand that to calculate moisture transport, given zonal, meridional winds and specific humidity, can simply do:</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><div><pre><font style="font-size: 10pt;" face="Tahoma" size="2">'define zon=uwnd.1*shum.3'</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2">'define mer=vwnd.2*shum.3'</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2">'d zon,mer'</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2">But, I want to plot vectors indicating field of net moisture flux (all arrows converging/diverging) instead of just transport.</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2">Thanks for any ideas.</font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2"><br></font><font style="font-size: 10pt;" face="Tahoma" size="2">Hyacinth</font><br></pre></div> </div></body>
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