ICON¶

ICON (Icosahedral Nonhydrostatic Weather and Climate Model) is a global model suitable for climate and weather prediction at regional and global domains. It is a joint project of DWD , MPI-M and KIT .

To stay informed about what is going on in the ICON world and to get to know other ICON users, please attend our quarterly C2SM ICON meeting. Additionally, one can subscribe to the official ICON newsletter .

Further information about the ICON model can be found at the official web page .

Support status¶

C2SM facilitates the utilisation of ICON on the Alps and Euler computing platforms for the CPU and GPU architectures.

Info

The latest official ICON release (currently 2025.10) and the icon-nwp master branch are continuously being tested on both Santis (CSCS) and Euler (ETHZ).

Mailing List¶

As a member of the c2sm.icon mailing list, you will receive all relevant information around ICON and invitations to the quarterly ICON meeting.

If you or someone from your group is not yet a member of the c2sm.icon mailing list, subscribe by sending an e-mail to sympa@sympa.ethz.ch?subject=SUBSCRIBE%20c2sm.icon%20firstname%20lastname (modify firstname and lastname in the subject).

To check which lists you are subscribed to, send an e-mail to: sympa@sympa.ethz.ch?subject=WHICH.

Documentation¶

ICON documentation is available at:

Toolset¶

In the Tools section, you will find relevant tools for working with ICON:

EXTPAR : External parameters for the ICON grid (preprocessing)
Processing Chain: Python workflow tool for ICON
Spack: Package manager for installing ICON
SPICE: Starter package for ICON-CLM experiments
Zonda: Web interface for genarating EXTPAR data on the ICON grid

Projects¶

Learn more about ongoing projects involving ETHZ in the development of ICON:

External Software¶

The following external software is useful for working with ICON data:

CDO