The Community Earth System Model (CESM) is a coupled climate model. It has seven different components: atmosphere, ocean, river run off, sea ice, land ice. The Common Infrastructure for Modeling the Earth (CIME) is a python based tool for coupling these different aspects together. The latest release is CESM 2.1.3 using CIME 5.6. The centralised install version has been configured to use Intel compilier and Intel MPI.

Advanced Research Computing node 4 (ARC4) is the high performance computing facilities provided by the Research Computing group at the University of Leeds.