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cd $OIFS_EXPT
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

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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Step 1:  Copy the Metview processing code to your $PERM $OIFS_EXPT location:

cp /permcd $OIFS_EXPT
wget https://sites.ecmwf.int/openifs/oifs_dataopenifs-data/case_studies/48r1/examplekarl/mv.tgz $PERM
cd $PERM
tar.gz
tar -xvzf mv.tar.tgzgz
cd mv

In the following steps we will process the OpenIFS model output into a dataset format that can be easily interpreted by Metview using a simplified plotting procedure.

Step 2:  Edit the file oifs_to_mvprocess.sh and change the path variable:

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cd $PERM$OIFS_EXPT/mv
./oifs_to_mvprocess.sh

• This data processing may take a couple of minutes to complete. 
• Occasionally the message "ERROR:  input file does not exist!" may occur which can be safely ignored. This happens when the script attempts to convert model output which was not generated by OpenIFS. The script will not fail but simply carry on looking for the next file.
• After successful completing the conversion process "Done." should appear on the terminal.
• As a result of this processing, regular gridded and compressed GRIB files are generated in  $PERM/mv/data/ab2a  which can be visualised with by running the enclosed Jupyter Notebook  single.ipynb

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