A Hybrid-Resolution Earth System Model

Abstract

We describe a hybrid-resolution version of the UKESM earth system model that reduces the model’s computational costs by using high resolution for simulated resolved atmospheric dynamics and physical parameterizations, and a lower resolution for chemistry and aerosol calculations. Initial evaluations of its scientific performance are encouraging. We are currently working on coupling the hybrid-resolution atmosphere-chemistry-aerosol model to the ocean component of the full coupled system.