Problem
| Excerpt |
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If you have a file with both Control and Perturbed forecasts, grib_to_netcdf will only convert the pf. Normally from 51 members in the GRIB file, only 50 appear in the netCDF. |
If you have a GRIB file with both Control and Perturbed forecasts, grib_to_netcdf will only convert the Perturbed Forecast. From 51 members present in the GRIB file, only 50 appear in the netCDF file.
| No Format |
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% grib_to_netcdf -o output.nc input.grib
...
grib_to_netcdf: Found 51 GRIB fields in 1 file.
...
grib_to_netcdf: Done.
% ncinfo output.nc
...
dimensions(sizes): longitude(26), latitude(31), number(50), time(1) |
This only occurs when 'type=pf and type=cf' fields coexist in the same file (common use case if you get real-time data).
Solution
The solution is to set the type=pf for the control forecast. Once converted the Control Forecast will appear as 'ensemble_number' = 0 in the NetCDF file.
| No Format |
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% grib_set -s type=pf -w type=cf input.grib input2.grib
% grib_to_netcdf -o output.nc input2.grib |
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