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The GRIB tools are part of the ECMWF GRIB API ecCodes Library. They are a set of command line programs for interactive and batch decoding and processing of GRIB data
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There are tools for getting information about the GRIB API ecCodes installation and the keys available
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There is a tool for converting from GRIB to netCDF
- grib_to_netcdf
You will find some example data in $SCRATCH/ectrain/trx/openifs or you can use output from one of your own experiments.
Let's play !
Getting help with the tools
Running any of the GRIB API ecCodes tools without options or input files will produce a UNIX 'man page' style output describing the usage. Try:
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Try
Code Block grib_get_data -w shortName=z ICMGGepc8+000000The format of the data values can be controlled with a C-style format statement. Try:
Code Block grib_get_data -w shortName=z -F"%.4f" ICMGGepc8+000000
Other information can be printed along with the lat-lon-values triplet:
Code Block grib_get_data -p dataDate,dataTime,stepRange -w shortName=stl1 -F"%.4f" ICMGGepc8+000000
| Warning |
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If you need the values in a program then do not be tempted to use grib_get_data to output the information to a file and then read the file in your program. It is more efficient to use the appropriate Fortran 90, C or Python interface to GRIB API ecCodes to access the data values directly. |
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