Climate and Weather Modeling on High-Performance Computers

This project aims at improving the COSMO and CCLM models for next-generation high-performance computers. The COSMO model is a research and NWP model that is applied and further developed by several national weather services (including MeteoSwiss). The COSMO-CLM (CCLM) model corresponds to the COSMO model in CLimate Mode and is used at research institutions (e.g., ETH, Empa) for climate research. In this project we propose three interrelated tasks:

1. Near-term development of high-resolution cloud-resolving climate modeling capability by extending the versatility of CCLM, and to apply this new tool for the generation of climate change scenarios.
2. Refactoring the current version of the CCLM model to better exploit current hardware architectures with a much larger number of processors. The current code will be enhanced with a hybrid MPI/Open MP parallelization and parallel data input/output strategies.
3. A more aggressive shift toward future technologies. We will rewrite the CCLM dynamical core to improve the data layout for emerging architectures and employ state-of-the-art software engineering to ensure that the resulting code can be easily ported to emerging hardware.

Contact: Isabelle Bey