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Thanks for reply,<br>
<br>
yes PDEF values are correct. Investigating further confirms that it
is not issue in describing and reading gribs but in WRF somewhere.
Shifting of topography and domain distorting happens only in the
nest domain, whereas mother domain has absolutely correct placed
landmask and other fields.<br>
<br>
It looks that I need to search for solution in WRF...<br>
<br>
Ivan<br>
<br>
<br>
<br>
On 07/08/2012 08:25 PM, Jeff Duda wrote:
<blockquote
cite="mid:CAAig09AsN+n-JXkGhPFxxa3Wu1JLW7Z0G4W3dRHsd3qXt_VPVA@mail.gmail.com"
type="cite">I use <a moz-do-not-send="true"
href="http://grib2ctl.pl">grib2ctl.pl</a> and gribmap as well,
but I use different flags. What does the -verf flag do in <a
moz-do-not-send="true" href="http://grib2ctl.pl">grib2ctl.pl</a>?
Also, I use the -e -i flags for gribmap instead of just -i.
<div>
<br>
</div>
<div>Also, have a close look at your PDEF line and make sure you
are using the exact same values for the projection as what is in
the grib file. Use wgrib -V WRFPRS... to see what those values
are (i.e., standard lat, center lon, etc).<br>
<br>
Jeff</div>
<div><br>
<div class="gmail_quote">On Sun, Jul 8, 2012 at 11:27 AM, Ivan
Toman <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:ivtoman@inet.hr" target="_blank">ivtoman@inet.hr</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hello Jeff,<br>
<br>
I just set manually latitude and longitude for GrADS map
display, little bit wider than WRF domain is, just to see
exactly where it's borders are and what exact shape it
has.<br>
<br>
Data set is grib output from wrfpost, ctl file is created
by <a moz-do-not-send="true" href="http://grib2ctl.pl"
target="_blank">grib2ctl.pl</a> -verf wrfgribfile
>wrf.ctl and then gribmap -i wrf.ctl.<br>
<br>
Something is wrong. It looks that GrADS is OK, because I
can confirm that same shift happens in Panoply software.
So it is certanly issue in wrfpost (i think) or in wrf.
Probably not topic for this mailing list, but still maybe
someone will know the solution?<br>
<br>
Thanks again,<br>
Ivan
<div>
<div class="h5"><br>
<br>
<br>
<br>
On 07/08/2012 06:01 PM, Jeff Duda wrote:
<blockquote type="cite">Ivan,
<div>Exactly which control file and data set are you
using to plot the land/sea mask in the attached
image? You said you are trying to display WRF
output. The domain looks like you are running
over your own domain, but you said you plotted
data from the WRF NMM. This difference may cause
the aberrant behavior.
<div> <br>
</div>
<div>Jeff Duda<br>
<br>
<div class="gmail_quote">On Sun, Jul 8, 2012 at
6:53 AM, Ivan Toman <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:ivtoman@inet.hr"
target="_blank">ivtoman@inet.hr</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex"> Hello,<br>
<br>
I have issues displaying WRF output in
GrADS. The problem happens because
coordinate system in GrADS (or in WRF
gribs?) seems to be somehow misshaped.
Attached image clearly shows example of my
issue. So on the image, in color is plotted
land/sea mask from WRF NMM grib file.
However, on the NorthWest part of domain,
and on the SouthEast part of domain,
land/sea mask is tottaly out of order
according to GrADS coordinating system! As
you can see, Great Britain islands are moved
in southwest direction almost 3 degrees, and
Greece/Turkey is moved in northeast
direction, and whole shape of domain is
somehow deformed.<br>
<br>
I postprocess with wrfpost and then create
ctl and idx with <a moz-do-not-send="true"
href="http://grib2ctl.pl" target="_blank">grib2ctl.pl</a>
and gribmap and use opengrads for display.<br>
<br>
I'm currently unable to find why this
missalignment as described above happen. Is
it problem in GrADS, WRF, or postprocessor?<br>
<br>
Thanks for any idea.<span><font
color="#888888"><br>
Ivan Toman<br>
</font></span><br>
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-- <br>
Jeff Duda<br>
Graduate research assistant<br>
University of Oklahoma School of Meteorology<br>
Center for Analysis and Prediction of Storms<br>
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-- <br>
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Graduate research assistant<br>
University of Oklahoma School of Meteorology<br>
Center for Analysis and Prediction of Storms<br>
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