The Community Earth System Model (CESM), a fully-coupled, global climate model for simulating Earth's past, present, and future climate states, now has been ported to the high performance computer, namely Polaris, at Ocean University of China (OUC). CESM consists of seven geophysical models: atmosphere (atm), sea-ice (ice), land (lnd), river-runoff (rof), ocean (ocn), land-ice (glc) and ocean-wave (wav-stub only), plus a coupler (cpl) that coordinates the geophysics models’ time evolution and passes information between them.
Several CESM cases have been run on Polaris.
A 0.1-degree resolution fully-coupled simulation has been run for 20 years which can distinguish global mesoscale eddies clearly.The results are illustrated by the following animations.
Two cases with the resolution of 0.9×1.25_g×1v6 (about 1 degree) have been run to simulate preindustrial and industrial climate state. This is the link.
A coarse resolution of T31_g×3v7 (about 3 degree) has been designed to simulate paleoclimate, mainly in 30Ma BP and Last Glacial Maximum periods, by changing model topography, greenhouse gas concentration and some other parameters.