Hi Marston,
if you want to stay with the grib files, you probably need the echam variable table and I am not so experienced with that. But reading grib data with NCL is per se a quite time-consuming thing. its better to read in netcdf data which you can obtain if you have the cdo tool.
The command for "grib to netcdf" looks like:
cdo -r -f nc copy ifile ofile.nc
(-r ensures the proper time axis; -f points to the format nc)
cdo can be downloaded from a website, the Max-Planck-Institute for Meteorology in Hamburg is responsible for:
https://code.zmaw.de/projects/cdo
a very detailed Documentation website can be found there as well
Good luck, Kristina
________________________________
Von: Marston Johnston <shejo284_at_gmail.com>
An: ncl-talk_at_ucar.edu
Gesendet: 13:41 Mittwoch, 29.Mai 2013
Betreff: [ncl-talk] Reading ECHAM grib files
Hi,
I'm trying to extract data from several ECHAM6 grib files using ncl. Already when I try
and open the file and read the variable names I get warnings. I don't think the issue with the name is a big deal. Do I need worry about the others? If so I'm unsure how to solve the problems.
warning:NclGRIB: Unknown grib parameter number detected (24, center 98, table version 128 grib record 28), using default variable name (VAR_24)
warning:NclGRIB: Unknown grib parameter number detected (25, center 98, table version 128 grib record 37), using default variable name (VAR_25)
warning:GdsGAGrid: Possible error generating Gaussian latitude coordinates: continuing anyway
warning:GdsGAGrid: Gaussian latitude coordinate array is partially or wholly undefined
Sincerely,
/Marston
--
Only the fruitful thing is true!
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Received on Wed May 29 07:24:38 2013
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