[gradsusr] Incorrect coordinates for WRF output in GrADS

[Jeff Duda]

I use grib2ctl.pl and gribmap as well, but I use different flags.  What
does the -verf flag do in grib2ctl.pl?  Also, I use the -e -i flags for
gribmap instead of just -i.

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).

Jeff

On Sun, Jul 8, 2012 at 11:27 AM, Ivan Toman <ivtoman at inet.hr> wrote:

>  Hello Jeff,
>
> 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.
>
> Data set is grib output from wrfpost, ctl file is created by grib2ctl.pl-verf wrfgribfile >wrf.ctl and then gribmap -i wrf.ctl.
>
> 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?
>
> Thanks again,
> Ivan
>
>
>
>
> On 07/08/2012 06:01 PM, Jeff Duda wrote:
>
> Ivan,
> 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.
>
>  Jeff Duda
>
> On Sun, Jul 8, 2012 at 6:53 AM, Ivan Toman <ivtoman at inet.hr> wrote:
>
>> Hello,
>>
>> 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.
>>
>> I postprocess with wrfpost and then create ctl and idx with grib2ctl.pland gribmap and use opengrads for display.
>>
>> I'm currently unable to find why this missalignment as described above
>> happen. Is it problem in GrADS, WRF, or postprocessor?
>>
>> Thanks for any idea.
>> Ivan Toman
>>
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>>
>>
>
>
>  --
> Jeff Duda
> Graduate research assistant
> University of Oklahoma School of Meteorology
> Center for Analysis and Prediction of Storms
>
>
>
> _______________________________________________
> gradsusr mailing listgradsusr at gradsusr.orghttp://gradsusr.org/mailman/listinfo/gradsusr
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>


-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20120708/22e5b38f/attachment-0003.html