CDO-based routine for the preparation of IFS or OpenIFS nudging files.
This set of scripts automatically generates input files to perform spectrally nudged simulations with the IFS or OpenIFS model, for a given source data set (e.g., the ERA5 reanalysis), time frame, and target resolution/grid. The scripts have been developed at the Alfred Wegener Institute (Germany) and were optimized in collaboration with the Barcelona Supercomputing Center (Spain).
We thank Sebastian Rast, who implemented the initial version of this approach for the ECHAM model.