Fwd: wrf_map() doesn't put terrain in right place

Hi all,

I decided to politely re-surface the following thread :) It seems like
colleagues are running into this issue more and more, and I'm afraid I don't
know enough to say much more than that for some reason the WRF domains
aren't plotted correctly by a number of software packages, including the NCL
WRF functions (and, we've learned recently, GEMPAK). Is there a way that we
out here in the trenches might be wanting to define our original domains to
avoid these problems?

Thanks,

Don

---------- Forwarded message ----------
From: Don Morton <donaldjmorton_at_gmail.com>
Date: Thu, May 1, 2008 at 10:16 PM
Subject: wrf_map() doesn't put terrain in right place
To: ncl forum <ncl-talk_at_ucar.edu>, wrfhelp <wrfhelp_at_ucar.edu>

Hi, here's another problem I've been running into lately -
it's very similar to one I had last summer, that you all helped
me find a fix for.

I'm trying to use the newer wrf NCL functions, as I really like
their potential ease of use. However, in trying to do a simple
terrain plot on a WRF nest, the terrain ends up in the wrong
place. The script is available at

<http://weather.arsc.edu/Miscellaneous/NCL/Maps/wrfHGT-1.ncl>

and the input data, "wrfoutd02.nc" is in the same directory.
The resulting image is at

<http://weather.arsc.edu/Miscellaneous/NCL/Maps/Image1.jpg>

You can see that the Alaska Range has moved to the Gulf of Alaska.

This is presumably because the WRF output file represents an inner
nest of a larger domain, and in this nest the Standard Lon and the
Center Lon are different. This "seems" like a common occurrence to me,
unless you place the nest smack in the middle of the parent?

Last summer, you all helped me fix this issue, and such a
script exists at

<http://weather.arsc.edu/Miscellaneous/NCL/Maps/wrfHGT-2.ncl>

with resulting image at

<http://weather.arsc.edu/Miscellaneous/NCL/Maps/Image2.jpg>

I tried playing around with some resource settings for the wrf_map()
functions, but couldn't get anything to work.

Thanks,

Don

--
University of Montana
http://www.cs.umt.edu/~morton/ <http://www.cs.umt.edu/%7Emorton/>
Arctic Region Supercomputing Center
http://weather.arsc.edu/
-- 
Arctic Region Supercomputing Center
http://weather.arsc.edu/
University of Montana
http://www.cs.umt.edu/~morton/

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Received on Thu Jul 10 2008 - 15:23:28 MDT