[Wrf-users] bug fix for wrfpost navigation

[Wrfhelp]

Dear Rorik,

The grid navigation problem you encountered when using 
version 1 of the WRF Post-Processor has been fixed in 
version 2 of this package.  Switching to version 2 should
provide you with the correct navigation information.  For 
more information on the new capabilities and bug fixes
included in version 2, please see:

http://www.dtcenter.org/wrf-nmm/users/model/graphics/updates.php

--Wrfhelp


On Sat, Oct 21, 2006 at 12:00:03PM -0600, wrf-users-request at ucar.edu wrote:
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> Today's Topics:
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>    1. is wrfpost missing STAND_LON? (Rorik Peterson)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 20 Oct 2006 16:19:05 -0800
> From: Rorik Peterson <ffrap1 at uaf.edu>
> Subject: [Wrf-users] is wrfpost missing STAND_LON?
> To: wrf-users at ucar.edu
> Message-ID: <45396779.5020500 at uaf.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> I recently ran into a problem with the navigation information in the 
> GRIB files being generated by wrfpost.  I'm working with a non-standard 
> grid where the vertical line of longitude (i.e. parallel to the y-axis) 
> is not in the center of the domain, but offset many degrees.  However, 
> the GRIB files being generated by wrfpost have the vertical line of 
> longitude listed as the domain-center longitude (octets 18-20 in the 
> GDS).  For example, the WRF NetCDF files have the following attributes:
>                 :CEN_LAT = 65.4f ;
>                  :CEN_LON = -160.2f ;
>                  :TRUELAT1 = 67.5f ;
>                  :TRUELAT2 = 90.f ;
>                  :MOAD_CEN_LAT = 65.40175f ;
>                  :STAND_LON = -150.f ;
> 
> but the GRIB files has -160.2 degrees as the vertical longitude instead 
> of STAND_LON, or -150.  You can see a picture of this domain here:
> http://pileus.arsc.alaska.edu/weather/WRFSims/NorthAlaska6/NorthAlaska6-d01/
> 
> I looked quickly through the source code for wrfpost and it appears that 
> wrfpost never reads the STAND_LON attribute, and proceeds to write the 
> CEN_LON value to GDS octets 18-20.
> 
> I'm wondering if I am wrong in my interpretation of this, or maybe I 
> have such a non-standard situation, no one has run into this issue before.
> 
> Thanks for any insight and help,
> 
> rorik
> 
> 
> 
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> End of Wrf-users Digest, Vol 26, Issue 10
> *****************************************