Modeling Land Ice in the Community Earth System Model

Here, we summarize results to dates and describe ongoing model development. We show that the simulated present-day surface mass balance of Greenland is in good agreement with observations and regional models, and we describe the sensitivity of the mass balance to climate changes. We show initial results from higher-order ice-sheet models with prescribed atmosphere and ocean forcing, including SeaRISE and ice2sea scenarios. Finally, we describe progress in coupling ice-sheet and ocean models (which will enable simulations with a dynamic Antarctic ice sheet) and in modeling smaller glaciers and ice caps.