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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.
Installing the model sources and building the model (including acceptance tests) requires 3-4 GB of disk space. The additionally required climatological data packages are not yet included; their installation is described below and will require further disk space.
To proceed you should:
- create a new home for the OpenIFS/AC installation, e.g. a directory called
openifs-ac. You will need approximately 3-4 GB of disk space for the model installation (the additionally required climatological data packages are not included, their installation is described below and will require further disk space). - change into your new directory and unpack therein the original OpenIFS model sources: tar xvzf oifs43r3v2.tgz
- in a second step, in the same folder unpack the OpenIFS/AC sources: tar xvzf openifs-ac.43r3.v1.tgz
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