WRF output usually includes terrain height.<br>NARR data does not explicitly contain terrain height, but it does have surface pressure (not the same thing as MSLP). If all you need is the general shape of the terrain, this would help you. If you need specific values, you could assume a standard atmosphere to diagnose the terrain height. Granted, you wouldn't get great resolution with it.<br>
NAM, GFS, and RUC analysis data contain surface geopotential height, which is just about the same thing as terrain height.<br>I have used all of these sources from the nomads site at NCDC before.<br><br>If you need something really hi-res, check out the National Elevation Datasets from the USGS: <a href="http://seamless.usgs.gov/">http://seamless.usgs.gov/</a><br>
I have no experience with using USGS data in Grads, however.<br><br>Jeff<br><br><div class="gmail_quote">On Tue, Nov 15, 2011 at 9:01 PM, Rowell, Mason D. <span dir="ltr"><<a href="mailto:Mason.D.Rowell-1@ou.edu">Mason.D.Rowell-1@ou.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">All,<br>
<br>
Do any grads users have experience with any topo data sets that could be used to plot terrain gradient vectors?<br>
<br>
Mason<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Grad student - PhD, Meteorology<br>University of Oklahoma School of Meteorology - Center for Analysis and Prediction of Storms<br><br>