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The OpenIFS model is based on the ECMWF operational Integrated Forecast System (IFS). It is identical to IFS in forecast capability, the difference is the data assimilation and observation handling capability is not available.

This user guide covers a brief description of the installation and use of the 3D global forecasting model and the Single-Column Model of OpenIFS 48r1 at model version 48R1.1. It does not deal in detail with the scientific and technical formulation of the model. Such information is available in the references listed in the OpenIFS Documentation section of the OpenIFS website.

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Obtaining the OpenIFS package

Create your local installation of OpenIFS 48R1.0 by cloning or branching from the git repository with the OpenIFS package. The location will be your new OIFS_HOME place.  You will need approximately XX GB of disk space.

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git clone ssh://git@git.ecmwf.int/~daha/openifs-main-git.git

Please note that currently access to this repository is restricted to a limited number of users.

 Build OpenIFS

The openifs-test.sh script can be used to build the model and run initial tests. 

Edit the script and in line 16 set the location of your OIFS_HOME directory which is the location where you have extracted the git repository and where this script should be located.

Run the build and test with this command:

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