Introduction

The OpenIFS model is provided in several compressed tarfiles availale from the OpenIFS ftp site:

  1. OpenIFS source code.
  2. OpenIFS supporting data files.

The model will unpack into a directory called 'oifs'.

OpenIFS directory layout

The directory structure for the OpenIFS model and code depends on local installation requirements, number of users and so on. However, a recommended directory structure would have all source code and data organised under a single directory 'oifs'.  If desired, the grib_api and FCM software could also be installed under the oifs directory but it's recommended they are placed elsewhere.

OpenIFS ftp site

All the OpenIFS related files are available from the ftp site: ftp.ecmwf.int. If you do not have ftp site password, please email : openifs-support@ecmwf.int.

The OpenIFS distribution includes source code, datafiles and supporting software. Once logged into the ftp site you will see the following directories:

Contents of ftp.ecmwf.intDescription
data/OpenIFS data files; climate files, vtables, rtables and namelist.
src/OpenIFS source code, grib_api & FCM tar files.
users/

User group specific space. Model runs provided for groups will be found here.

Contents of directory src:Description
38r1/Contains OpenIFS versions based on Cycle 38 Release 1 of IFS.
grib_api/grib_api software required for OpenIFS. See the grib_api install page for more details.
fcm/FCM software used for compiling OpenIFS. See the FCM install page for more details.

OpenIFS source code

To obtain the source code from the ftp site, change directory to the '38r1' directory and retrieve the latest source code (the filename may be different):

% ftp ftp.ecmwf.int
user: openifs
cd src/38r1
ls
get oifs38r1v1.0.tar.gz
quit

% tar zxf oifs38r1v1.0.tar.gz

Additional software

OpenIFS users may also find the MetView and MAGICS graphics software useful with OpenIFS.

To download these packages, visit the ECMWF software webpage.