ICON-ART, the ICOsahedral Nonhydrostatic model with Aerosols and Reactive Trace gases, is a numerical weather prediction and climate modeling system developed jointly by several research institutions. It is used for research and operational weather forecasting. The ART module provides (gas-phase) chemistry, aerosol dynamics and related feedback processes. This module was initiated by and undergoes continuous development at the Karlsruhe Institute of Technology (KIT).

The aim of the project TESSA(TESt Suitefor ICON-ART) is to design and develop a test suite for ICON-ART that enables testing the model's source code at different levels, from single units of the code up to full end-to-end tests. For the ICON-ART community, the main benefit of this project is that it facilitates a more effective development process, eases the inclusion of new developments, and aids in workflow management. In addition, the project will help to guide towards ensuring a reproducibility of results and allow to assess performance implications during model development.

Figure: Icosahedral grid used in the ICON model with nested region over Europe

For NHR@KIT, this project serves as an example for efficiently utilizing the offered services and will provide valuable insights into the available services and into possibilities for extensions or improvements