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Set dimension to be an unlimited dimension.

grib_to_netcdf examples

1. Produce a NetCDF file from grib edition 1

   Code Block

2. > grib_to_netcdf -o output.nc input.grib1

   
   

   
   

3. If your grib file has analysis and 6-hour forecast, then ignore keys 'type' and 'step'. Thus type=an/fc and step=00/06 will not be considered as netcdf dimensions.

   Code Block

4. > grib_to_netcdf -I type,step -o output.nc input.grib

   
   

   
   

5. Do not use time of validity. If time of validity is used, it means the 1D time coordinate is considered as date+time+step, otherwise 3 different dimensions are created. The default behaviour is to use the time of validity.

   Code Block

6. > grib_to_netcdf -T -o output.nc input.grib

   
   

   
   

7. Produce NetCDF with data type of FLOAT (32bit floating-point, for higher precision). Note these types were chosen to provide a reasonably wide range of trade-offs between data precision and number of bits required for each value

   Code Block

8. > grib_to_netcdf -D NC_FLOAT -o output.nc input.grib

   
   

   
   

9. Set the netcdf dimension 'time' to be unlimited i.e. time can have unlimited length so variables using this dimension can grow along this dimension.

   Code Block

10. > grib_to_netcdf -u time -o output.nc input.grib