I got a nice script from the<a href="http://www.iges.org/grads/gadoc/library.html"> script library</a> that doesn't appear to be there anymore, but I've attached it to this email. It will plot an arbitrary cross section using the collect command. As far as obtaining water vapor mass, really the only way is to use the density of dry air to get water vapor density, or q*rho, where q is water vapor mixing ratio and rho is dry-air density. <br>
<br>Jeff Duda<br><br><div class="gmail_quote">On Mon, Sep 26, 2011 at 10:54 AM, Simon Krichak <span dir="ltr"><<a href="mailto:shimon@cyclone.tau.ac.il">shimon@cyclone.tau.ac.il</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<u></u>
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Mason,</font></div>
<div><font face="Arial" size="2">It does not look that simple since I need to
plot not the mixing ratios themselves but those multiplied by mass of air in
each of the layers.</font></div>
<div><font face="Arial" size="2">Simon</font></div>
<div><font face="Arial" size="2"></font> </div>
<blockquote style="border-left:#000000 2px solid;padding-left:5px;padding-right:0px;margin-left:5px;margin-right:0px"><div><div></div><div class="h5">
<div style="font:10pt arial">----- Original Message ----- </div>
<div style="font:10pt arial;background:#e4e4e4"><b>From:</b>
<a title="Mason.D.Rowell-1@ou.edu" href="mailto:Mason.D.Rowell-1@ou.edu" target="_blank">Rowell,
Mason D.</a> </div>
<div style="font:10pt arial"><b>To:</b> <a title="gradsusr@gradsusr.org" href="mailto:gradsusr@gradsusr.org" target="_blank">GrADS Users Forum</a> </div>
<div style="font:10pt arial"><b>Sent:</b> Monday, September 26, 2011 6:09
PM</div>
<div style="font:10pt arial"><b>Subject:</b> Re: [gradsusr] mass of water in
layers</div>
<div><br></div>
<div style="font-family:Tahoma;direction:ltr;color:#000000;font-size:10pt">Simon,
<div><br></div>
<div>You should easily be able to set the dimensions such that the display
output yeilds a cross section, at least along some latitude or longitude line,
but I know there are ways to do it along any line of choice. Just allow only
the z and some horizontal dimension to vary, with all other diimensions fixed.
Are you looking for vertically integrated water mass, or just wishing to plot
isopleths of mixing ratio?</div>
<div><br></div>
<div>Mason <br>
<div style="font-family:Times New Roman;color:#000000;font-size:16px">
<hr>
<div style="direction:ltr"><font face="Tahoma" size="2" color="#000000"><b>From:</b> <a href="mailto:gradsusr-bounces@gradsusr.org" target="_blank">gradsusr-bounces@gradsusr.org</a>
[<a href="mailto:gradsusr-bounces@gradsusr.org" target="_blank">gradsusr-bounces@gradsusr.org</a>] on behalf of Simon Krichak
[<a href="mailto:shimon@cyclone.tau.ac.il" target="_blank">shimon@cyclone.tau.ac.il</a>]<br><b>Sent:</b> Monday, September 26, 2011 7:30
AM<br><b>To:</b> GrADS Users Forum<br><b>Subject:</b> [gradsusr] mass of water
in layers<br></font><br></div>
<div></div>
<div>
<div><font face="Arial" size="2">Dear GrADS User,</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">I have the mixing ratio data and other
parameters from the NNRP defined on unevenly spaced isobaric surfaces
and would like to draw vertical crossection of the water mass in the
layers. </font><font face="Arial" size="2">Would appreciate your help if
possible.</font></div>
<div> </div>
<div><font face="Arial" size="2">Regards,</font></div>
<div><font face="Arial" size="2">Simon Krichak</font> </div>
<blockquote style="border-left:#000000 2px solid;padding-left:5px;padding-right:0px;margin-left:5px;margin-right:0px"><font face="Arial" size="2"></font> </blockquote></div></div></div></div>
</div></div><p>
</p><hr>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br><a href="http://www.meteor.iastate.edu/%7Ejdduda" target="_blank">www.meteor.iastate.edu/~jdduda</a><br>