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Set up a forecast experiment
An example forecast experiment has been prepared for OpenIFS 48r1. The experiment ID is ab2a.
Extract the example forecast experiment ab2a.tar.gz into a folder in a location suitable for model experiments. This folder will be your experiment directory and its root path should correspond with the variable OIFS_EXPT in the platform configuration fileThe global OpenIFS configuration file (oifs-config.edit_me.sh) sets the variable OIFS_EXPT which should point to the root directory for your OpenIFS experiments. You should extract ab2a.tar.gz to this location, and this folder will become your experiment directory.
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The experiment directory would ideally be in a different location from the earlier model installation path $OIFS_HOME. In general, you will need more disk space for experiments, depending on the model grid resolution, the duration of the forecast experiment and the output fequency of model results. In oifs-config.edit_me.sh you should set $OIFS_EXPT from its default location to a suitable directory in your local filesystem. |
Example:
On the ECMWF hpc2020 our model installation has been previously installed to $OIFS_HOME will be which is in $HOME/openifs-48r1.1. 1 and for For the experiment we extract the ab2a package to $OIFS_EXPT which is in a different location on the file system. The experiment directory shall therefore be $OIFS_EXPT/ab2a/2016092500.
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wget https://sites.ecmwf.int/openifs/openifs-data/case_studies/48r1/karl/ab2a.tar.gz $OIFS_EXPT cd $OIFS_EXPT tar -xvzf ab2a.tar.gz |
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The experiment directory would ideally be in a different location from the earlier model installation path $OIFS_HOME. In general, you will need more disk space for experiments, depending on the model grid resolution, the duration of the forecast experiment and the output fequency of model results. |
Ensure the Ensure the namelist files for the atmospheric model (fort.4) and for the wave model (wam_namelist) are found in the experiment directory. If they are not already there then you can find them in a subfolder (called ecmwf) inside the experiment directory.
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