New tool: Data Compression Toolkit (dc_toolkit)
The Data Compression Toolkit is now part of the C2SM tools. It helps you find the optimal compression setup for your netCDF data while staying within customized error budgets.
Welcome to the C2SM User Landing Page!
Here we collect helpful information for scientists and partners about the C2SM core team, tasks, support, supported HPC systems, models, tools, datasets and much more.
News¶
ICON4Py dynamical core merged into ICON master
With this release, the GT4Py-based implementation of ICON's atmospheric dynamical core, developed within the EXCLAIM project at ETH Zürich, CSCS and MeteoSwiss, has been merged into the ICON repository and is now available for general use. This is the first large component of ICON to be performance portable, and it marks the first concrete step towards a fully portable, architecture-agnostic ICON.
New pages for NCCR CLIM+ task submission and support
We have added two new pages describing how to request tasks and get support for the NCCR CLIM+ project.
Git: Beyond the Basics Workshop
We are pleased to announce our next Git: Beyond the Basics workshop, which will take place on Thursday, October 8th from 9:15 am to 15:00 pm.
Zephyr: Multi-variable requests and new documentation
Zephyr, C2SM's climate data extraction tool, now supports requesting multiple variables (or other fields) in a single request, and comes with a brand-new documentation site.
Git for Beginners Workshop
We are pleased to announce our next Git for Beginners workshop, which will take place on Thursday, 26 March from 9:30 am to 3:00 pm.
C2SM Modeling Workshop 2026
The C2SM Modeling Workshop 2026 took place successfully at Empa-Akademie, Dübendorf.
The event featured six talks and sixteen poster presentations. All details, including links to posters and presentations, are available on the corresponding page.
We look forward to welcoming you to the next Modeling Workshop in 2027!
Upcoming C2SM Workshops open for Registration
We are pleased to announce that three upcoming workshops are now open for registration:
- Git for Advanced -
12 September 2025 Introduction to Python Programming- 19 & 26 September; 3, 10, 17, 24 October 2025Scientific Visualisation using Python- 27 & 28 November 2025
Please follow the links for more information and registration.
Glossary now available
We are excited to share that a Glossary has been added to our landing page!
It includes most — if not all — of the abbreviations and technical terms used throughout our site. This is especially helpful for new C2SM members who may not yet be familiar with all the jargon.
Curious about what SPICE has to do with limited-area modeling? Or wondering about the difference between CESM and C2SM? You will find the answers in the Glossary — check it out!
C2SM Communtiy Day 2025
On March 24, 2025, the C2SM Community Day took place at ETH main building. The slides of the Core Team presentation can be downloaded from the Community Day web page .