I'd like to use WRF output data to force a land surface model (HRLDAS). HRLDAS requires grib2 forcing data and I have so far been unable to convert from netcdf to grib. There are a number of tools that allow the conversion the other way (grib to netcdf).
I have tried using:
cdo -f grb -copy WRFoutfile.nc test.grb
but get the following message:
"Warning (grbGetGridtype): Curvilinear grid is unsupported in GRIB format! Created wrong Grid Description Section!"
Many thanks!
Trevor
Hi Trevor,
Why don't you regrid your WRF data to regular grids before trying to convert it into grib?
Please follow the CDO commands to grid netcdf file.
cdo -f nc -sellonlatbox,lon1,lon2,lat1,lat2 -random,r1440x720 template.nc
(1440x720 are global points so they determine the resolution of the intended template created in this command)
cdo -remapcon,template.nc input.nc output.nc
remapcon, remapbic, remapnn, etc methods are available to regrid your data
Hope this helps you!
Regards,
Kishore
Hi Trevor,
Why don't you regrid your WRF data to regular grids before trying to convert it into grib?
Please follow the CDO commands to grid netcdf file.
cdo -f nc -sellonlatbox,lon1,lon2,lat1,lat2 -random,r1440x720 template.nc
(1440x720 are global points so they determine the resolution of the intended template created in this command)
cdo -remapcon,template.nc input.nc output.nc
remapcon, remapbic, remapnn, etc methods are available to regrid your data
Hope this helps you!
Regards,
Kishore
The UPP has the capability to post-process output from a variety of NWP models, including WRF-NMM, WRF-ARW from netcdf to grib. In this, you can select desire parameters only. The UPP software package is based on WPP but has enhanced capabilities.
You might find some useful hints here:
https://stackoverflow.com/questions/15432587/converting-netcdf-to-grib2
The best solution is to use UPP software.
UPP is a dedicated solution for the WRF model, works well with the latest version of WRF 4.1.5 (I checked) and the results can be saved in grib1 and grib2 format.
https://dtcenter.org/community-code/unified-post-processor-upp
after one system reboot EMSUPP constantly ends in a segmentation fault error. Anyone has the same experience?
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