Abstract
We present a summary of current progress and challenges faced in testing of the new MPAS-Land Ice model and coupling it to ACME. Results from large-scale, moderate resolution, stand-alone MPAS-Land Ice simulations using realistic geometries and boundary conditions are compared to similar simulations using CISM. Output from MPAS-Ocean as applied to idealized, benchmark test cases of sub-ice shelf circulation are shown and compared with results from previous DOE-funded modeling efforts. We also summarize the progress to date and remaining challenges associated with 1) bringing in MPAS-Land Ice as a new ACME model component, 2) adding the necessary software infrastructure to facilitate coupling between MPAS-Land Ice and other ACME model components, and 3) idealized and realistic simulations of staged complexity, aimed at verifying and validating MPAS-Land Ice when run as a coupled model component within ACME.