MPAS-Albany Land Ice simulations of the Antarctic Ice Sheet through 2300: Exp02-05 state fields

This dataset contains model output in zarr and netCDF format, Python analysis scripts, and model code for MPAS-Albay Land Ice (Hoffman et al., 2018) simulations of the Antarctic Ice Sheet from 2000–2300. They comprise the experiments following the protocol from the ISMIP6-Antarctic-2300 multi-model ensemble (Seroussi et al., 2024). The model configuration and simulations are described in detail by Hillebrand et al. (in prep). This output is from a 72-member large ensemble of simulations that varies the sub-shelf melt and basal sliding parameters for ocean and atmosphere scenarios from four different Earth system models, with and without prescribed ice-shelf hydrofracture forcing. The large ensemble simulations use a depth integrated stress balance approximation for considerations of computational cost.  

This archive includes state variable output from ExpAE02-ExpAE05 (no hydrofracture).

Naming conventions:

expAE denotes experiment number corresponding to Seroussi et al. (2024); q denotes the basal sliding law exponent value; and m denotes the value of a sub-ice-shelf melt parameter.

Definitions for variable names listed below can be found at https://github.com/MALI-Dev/E3SM/blob/develop/components/mpas-albany-landice/src/Registry.xml

*_state.zarr contains 2D spatial fields defining model state:

• Thickness

• lowerSurface

• xvelMean

• yvelMean

• basalTemperature

• Time (days since 2000-01-01)

This archive also includes the initial condition files for the 3 values of q:

• AIS_4to20km_r01_20220907_relaxed_q10.zarr.tar
• AIS_4to20km_r01_20220907_relaxed_q3.zarr.tar
• AIS_4to20km_r01_20220907_relaxed_q5.zarr.tar

References:

Energy Exascale Earth System Model (Version 3.0.0) [Computer software]. https://doi.org/10.11578/E3SM/dc.20240930.1

Hillebrand, Trevor R., Matthew J. Hoffman, Holly K. Han, Mauro Perego, Alexander O. Hager, Andrew Nolan, Xylar Asay-Davis, Stephen F. Price, Jerry Watkins, and Max Carlson. Evolution of the Antarctic Ice Sheet from 2000–2300 and Beyond: Model Sensitivity and Uncertainty Analysis Using MPAS-Albany Land Ice. In preparation.

Hoffman, Matthew J., Mauro Perego, Stephen F. Price, William H. Lipscomb, Tong Zhang, Douglas Jacobsen, Irina Tezaur, Andrew G. Salinger, Raymond Tuminaro, and Luca Bertagna. "MPAS-Albany Land Ice (MALI): a variable-resolution ice sheet model for Earth system modeling using Voronoi grids." Geoscientific Model Development 11, no. 9 (2018): 3747-3780.

Seroussi, Hélène, Tyler Pelle, William H. Lipscomb, Ayako Abe‐Ouchi, Torsten Albrecht, Jorge Alvarez‐Solas, Xylar Asay‐Davis et al. "Evolution of the Antarctic Ice Sheet over the next three centuries from an ISMIP6 model ensemble." Earth's Future 12, no. 9 (2024): e2024EF004561.

This dataset is covered by LA-UR-25-27725.