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>