The E3SM Atmosphere Model in C++ (EAMxx) is a new global model which uses the Kokkos C++ library to achieve excellent performance on GPUs and other emerging architectures. Recent advances in computing disproportionately benefit very high-resolution simulations, enabling breakthroughs in global storm-resolving models (GSRMs). In this talk, I will describe the EAMxx strategy, present results from the first EAMxx GSRM simulations, and discuss future opportunities in this space.

This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.