[Met_help] Re: MET -- grid conversion on GFS

[John Halley Gotway]

Luke,

Do me a favor.  Run Grid-Stat again using the command line option "-v 3" and redirect the entire output to a log file.  Then please send me the log file.

For example...
./grid_stat fcst_file obs_file config_file -v 3 >& grid_stat.log

There's another section of the output I'd like to see, and then I think it'll be pretty easy to help you.

John

Luke Peffers wrote:
> Hello John:
> 
> I have been working on creating a precipitation dataset for MET comparison.
> I was able to create convert a global satellite-derived precipitation set to
> GRIB1 format using LATS.  I ran it through grid_stat in order to extract the
> grid information so I would be able to regrid my WRF forecast data to match
> the precip data grid.  However, I can't seem to get copygb to work correctly
> when I input my WRF forecast (i.e., all zero values).  I recall that you
> were able to help me regrid my WRF to a GFS-like sub domain through the
> above mentioned method.  I have attached the information for my precip data
> that was output from grid_stat below.  Will you be able to help be put
> together a copygb command that will take my WRF forecast and put it on a
> grid similar to the precip data.  Since the precip data is on a large
> near-global domain, I think I will just use the plot_valid_flag option to
> zoom in instead of regridding my precip data as well. Please let me know if
> I need to direct this question to another location.
> 
> Thank you for your time.
> Luke Peffers
> 
> Output from Grid_Stat:
> 
>    length:     32
>    nv:         0
>    pvpl:       255
>    type:       0
>    nx:         1440
>    ny:         480
>    lat1:      8448483
>    lon1:      125
>    res_flag:  128
>    lat2:      59875
>    lon2:      359875
>    di:        250
>    dj:        250
>    scan_flag: 2
> 
> 
> 
> On Nov 1, 2007 3:29 PM, Luke Peffers <luke.peffers at gmail.com> wrote:
> 
>> Hello John:
>>
>> I am have some difficulty verifying my WRF model run with GFS gridded
>> date.  I would like to follow the general rule that when comparing two
>> gridded files, one should regrid the forecast file to the obs grid, in my
>> case GFS.  When I do that, mode compares my relatively small domain to the
>> entire GFS (global) domain.
>>
>> I am, of course, running my WRF output through WRF Post Processor.   I
>> regrid my files using COPYGB.
>>
>>  I have no problem regridding the GFS data to my forecast grid since I
>> know the exact grid dimensions for the user defined grid from WRF.  I don't,
>> however, know the exact grid codes for a GFS-like grid that is of the exact
>> domain size of my forecast file. Thus, I continue to use MET with obs files
>> regridded to match my WRF output grid file.
>>
>> Do you know how I can resolve this problem?
>>
>> Thank you!!
>>
>> Luke Peffers
>> FSU Meteorology Department
>>
>>
>