Visualizing model output is under development. The instructions below are a temporary solution allowing users to convert to netCDF for their favourite plotting program.
Later OpenIFS results will provide additional software to analyse and view model output more easily without the need to modify the GRIB output files.
Model output
The OpenIFS model outputs files in GRIB format. These files are a mix of GRIB 1 & GRIB 2 format messages. They also contain multiple vertical coordinates: pressure levels, sub-surface levels etc as well as fields on reduced Gaussian grids. Unfortunately these features can cause problems with 3rd party GRIB software.
The ICMGG files contain
CDO commands
These instructions assume the use of a recent version of Climate Data Operators (CDO) (available from Max-Planck-Institut, Germany).