The EC-Earth3 Earth system model for the Coupled Model Intercomparison Project 6

Abstract. The Earth system model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major configurations, a methodology ensuring the simulations are comparable across different high-performance computing (HPC) systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behavior biases well within frame known from recent CMIP models. With improved dynamic features, new (ESM) components, community tools, largely compared CMIP5 version, represents clear step forward only European ESM. We here that suited range tasks beyond.