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Method 1: We recommend to create a new installation for OpenIFS/AC. This will preserve your original OpenIFS installation and will allow you to use the standard (meteorological) model and the atmospheric composition model interchangeably.
To proceed you should:
- create Create a new home for the OpenIFS/AC installation. Here we call this location /home/openifs-ac.
- change Change into your new directory and unpack therein the original OpenIFS model sources: tar xvzf oifs43r3v2.tgz
- in In a second step, in the same folder unpack the OpenIFS/AC sources: tar xvzf openifs-ac.43r3.v1.tgz
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For the conversion you should:
- change Change into your $OIFS_HOME directory where OpenIFS is installed: cd $OIFS_HOME
- in In this directory extract the downloaded source package: tar xvzf openifs-ac.43r3.v1.tgz
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As a next step you should:
- create Create a new directory which will contain the additional data that is required for atmospheric composition modelling and it will also contain the new
OIFS_DATA_DIR. Here we call this location /data/openifs-ac. download Download the required four additional data tgz archives into /data/openifs-ac. The following commands will work on the Atos HPC:
No Format cd /data/openifs-ac module load ecfs ecp ec:/nm6/oifs/oifs-ac-43r3-chem.tgz . ecp ec:/nm6/oifs/oifs-ac-43r3-xtra.tgz . ecp ec:/nm6/oifs/oifs-ac-43r3-initcond.tgz . ecp ec:/nm6/oifs/ICMCL-2010.tgz .
Unpack oifs-ac-43r3-chem.tgz and oifs-ac-43r3-xtra.tgz into /data/openifs-ac. This will result in the following directory structure inside /data/openifs-ac :
43r3/chemistryAC specific 43r3/xdataAC specific 43r3/rtablesStandard dataset for OpenIFS 43r3 43r3/climate.v015Standard dataset for OpenIFS 43r3 + AC specifics 43r3/ifsdataStandard dataset for OpenIFS 43r3 43r3/wamWave model data for OpenIFS 43r3, needs to be added explicitly
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In order to build OpenIFS/AC the standard environment settings for oifs43r3v2 can be used with the application of two changes:
- change Change $OIFS_HOME to point to your installation of openifs-ac (and not to the standard oifs43r3 installation), in our example this is /home/openifs-ac.
- change Change $OIFS_DATA_DIR to the location with the additional data packages, in our example this is /data/openifs-ac.
- before Before compiling the model sources edit $OIFS_HOME/make/oifs.fcm to enable chemistry (which is by default disabled).
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