Convert a GRIB file to netCDF format.
Note: The GRIB geometry should be a regular lat/lon grid or a regular Gaussian grid (the key "
typeOfGrid" should be "
regular_ll" or "
grib_to_netcdf [options] grib_file grib_file ...
Ignore keys. Default method,type,stream,refdate,hdate
Split according to keys. Default param,expver
Reference date in the format YYYYMMDD. Default value 19000101.
Type of data. Possible values NC_BYTE, NC_SHORT, NC_INT, NC_FLOAT, NC_DOUBLE. Default NC_SHORT
Don't use time of validity.
Force. Force the execution not to fail on error.
-o output file
The name of the netcdf file.
Multi-field support off. Turn off support for multiple fields in single GRIB message.
Specifies the kind of file to be created. Possible values are: 1 -> netCDF classic file format 2 -> netCDF 64 bit classic file format (Default) 3 -> netCDF-4 file format 4 -> netCDF-4 classic model file format
Deflate data (compression level). Only for netCDF-4 output format. Possible values [0,9]. Default None. Chunking strategy based on GRIB message.
Shuffle data before deflation compression.
Set dimension to be an unlimited dimension.
Produce a NetCDF file from grib edition 1
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.
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.
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
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.