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<TITLE>Strange problem with nesting</TITLE>
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<P><FONT SIZE=2>Dear WRF users,<BR>
<BR>
I'm experiencing a strange problem with WRF when nesting is used. For certain<BR>
grid configurations, using nesting will cause some fields (e.g., terrain) to<BR>
shift eastward in parts of the domain. In one case so far, the offset is<BR>
clearly rectangular. I have tested both single and multiple cpus with Intel<BR>
MPI, and I haven't noticed any difference in the way the fields are offset.<BR>
Has anyone encountered this in their work? Note that the dimensions of the<BR>
inner-grid match the requirements mentioned in the User's Guide, i.e., (nx-1)<BR>
and (ny-1) are divisible by the parent_to_grid_ratio.<BR>
<BR>
I've attached the namelist.wps and namelist.input. I also have a PNG file of<BR>
the terrain field (plotted with RIP) illustrating my problem, but it's too big<BR>
(55K) to post to the list; I can try uploading it to a FTP site.<BR>
<BR>
<BR>
-Eric<BR>
<BR>
Eric M. Kemp<BR>
Meteorologist<BR>
Northrop Grumman Information Systems<BR>
Advisory Services Division (TASC)<BR>
4801 Stonecroft Boulevard<BR>
Chantilly, VA 20151<BR>
301-286-9768 (NASA Goddard Office)<BR>
703-633-8300 x7078 (Chantilly SLEET Lab)<BR>
703-633-8300 x8278 (Chantilly Office)<BR>
703-449-3400 (Chantilly Fax)<BR>
<BR>
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