The Joint Lab Exascale Earth System Modelling (JL-ExaESM) enables exascale simulations and develops data handling concepts in order to achieve a breakthrough in the simulation of regional to global climate change, extreme weather events, and the impact on society and ecosystems.

The Joint Lab ExaESM leverages co-design between computer scientists and domain scientists to address the scientific and methodological challenges of Earth system science using simulation and data analytics methods which exploit the exascale capabilities of future supercomputers.

By adopting modern IT concepts for flexible scheduling and federated, hierarchical data management, the flexibility of Earth system model configurations will be increased. In addition, the time-to-solution, encompassing the entire simulation and data analytics chain, will be reduced.

In the JL-ExaESM, scientists from nine Helmholtz institutions work together. The work is splitted in two main activities. The first activity is looking at Exascale Code Scalability. The second activity is looking at Exascale Workflow Scalability of ESM applications.