Towards a dynamic Greenland Ice Sheet component in E3SM

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Authors

Lead Presenter

Andrew D. Nolan - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Co-Author

Trevor R. Hillebrand - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Matt J. Hoffman - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Stephen F. Price - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Chloe A. Whicker‐Clarke - Department of Earth System Science, University of California, Irvine, CA, USA

Charles S. Zender - Department of Earth System Science, University of California, Irvine, CA, USA

Mauro Perego - Center for Computing Research, Sandia National Laboratories, Albuquerque, NM, USA

Alexander O. Hager - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Carolyn Branecky Begeman - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Darin Comeau - Computational Physics and Methods Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Jonathan D. Wolfe - Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM, USA

Abstract

Ice loss from the Greenland Ice Sheet increases global sea level and impacts ocean and sea ice conditions in the Atlantic and Arctic Oceans. While Earth system models have historically ignored ice sheet changes due to computational expense and technical challenges, substantial progress has been made through the efforts of the FAnSSIE SciDAC project and E3SM Polar/Ice Teams towards dynamic ice-sheet components. Here we report on progress towards a dynamic Greenland Ice Sheet in E3SM along three parallel tracks - 1. development and validation of Greenland Ice Sheet projections using E3SM’s ice-sheet component, MALI, in a standalone configuration, 2. coupling of MALI to snow and firn processes in ELM, and 3. coupling MALI Greenland to ocean processes in MPAS-Ocean. The MALI Greenland configuration uses a regionally-refined mesh ranging from 1 to 10 km resolution and has been calibrated to broadly reproduce observations of ice flow through Greenland’s narrow outlet glaciers. We show standalone projections of Greenland Ice Sheet mass change to 2100 forced by CMIP5 models as a comparative reference against forthcoming coupled E3SM projections with a dynamic Greenland Ice Sheet. We also introduce in-development land/ice-sheet and ocean/ice-sheet coupling for Greenland and show preliminary results for coupled interactions.

Related Meeting/Event

EESM PI Meeting 2024

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