[Met_help] netcdf forecast file support in point_stat

[Paul Oldenburg]

Darren,

MET should work with any GRIB data that's on a lat/lon, lambert
conformal, mercator, or polar stereographic projection.  There are
definitions of pre-defined NCEP grids in MET, but only to be used as a
convenient way of defining masking, or verification, regions.

WPP outputs GRIB data which contains the definition of the grid on which
the data resides.  MET parses that grid definition from the GRIB file
and uses that grid.

MET should work just fine over Alberta/BC in western Canada.

Paul




Darren Cherneski wrote:
> Thanks Paul.  I get the impression that MET only works with predefined NCEP grids.  Is this correct?  
> We have setup a WRF domain over just Alberta/BC in western Canada.
>  
> Thanks,
> Darren
>  
> Darren Cherneski, P.Eng.
> Senior Software Developer
> RWDI AIR Inc.
> Consulting Engineers & Scientists
>  
> Suite 1000, 736-8th Avenue S.W.
> Calgary, Alberta, Canada T2P 1H4
> T (403) 232 - 6771 x 6242
> F (403) 232 - 6762
> www.rwdi.com
> 
>>>> Paul Oldenburg <pgoldenb at ucar.edu> 06/11/2009 8:15 AM >>>
> Darren,
> 
> MET uses netcdf as an intermediate file format, but it does not directly
> accept the netcdf output of WRF.  Before feeding WRF data to MET, you
> must first run it through the WRF post-processor.  This step
> interpolates the WRF output from a staggered grid to a regular grid and
> to vertical pressure levels.
> 
> Information about running WPP can be found at the following link:
> 
> http://www.dtcenter.org/wrf-nmm/users/docs/user_guide/V3/index.pdf
> 
> Thanks,
> 
> Paul
> 
> Darren Cherneski wrote:
>> I see that the code for point_stat in METv2 seems to have support for some form of netcdf forecast file in the process_grid() function.  
>> What format of netcdf forecast file does it support?
>>  
>> I tried passing it a WRF v3.1.1 ARW nc file but it's looking for projection attributes that are not present in the WRF output file.
>>  
>> Thanks,
>> Darren
>>  
>>  
>>  
>> Darren Cherneski, P.Eng.
>> Senior Software Developer
>> RWDI AIR Inc.
>> Consulting Engineers & Scientists
>>  
>> Suite 1000, 736-8th Avenue S.W.
>> Calgary, Alberta, Canada T2P 1H4
>> T (403) 232 - 6771 x 6242
>> F (403) 232 - 6762
>> www.rwdi.com
>>
>>
>>      RWDI - One of Canada's 50 Best Managed Companies
>>      www.rwdi.com/50_best/
>>
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> 
> 
>      RWDI - One of Canada's 50 Best Managed Companies
>      www.rwdi.com/50_best/
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