Articles | Volume 18, issue 3
Research article
11 Mar 2024
Research article |  | 11 Mar 2024

Impact of boundary conditions on the modeled thermal regime of the Antarctic ice sheet

In-Woo Park, Emilia Kyung Jin, Mathieu Morlighem, and Kang-Kun Lee

Data sets

The basal temperature data for the entire Antarctic region derived from the thermal model of the ISSM In-Woo Park et al.

Ice Core Borehole Temperatures, Law Dome 1987, Ver. 2 T. van Ommen

Temperature Profile of the West Antarctic Ice Sheet Divide Deep Borehole K. M. Cuffey and G. D. Clow

Temperature of the West Antarctic Ice Sheet H. Engelhardt

Antarctic dataset in NetCDF format Anne M. Le Brocq et al.

Antarctic geothermal heat flux distribution and estimated Curie Depths, links to gridded files Yasmina M. Martos

MEaSUREs BedMachine Antarctica, Version 1 M. Morlighem

Temperature, Lithosphere‐asthenosphere Boundary, and Heat Flux beneath the Antarctic Plate Inferred from Seismic Velocities M. An et al.

The ERA-Interim Reanalysis: Configuration and Performance of the Data Assimilation System ( D. P. Dee et al.

MEaSUREs InSAR-Based Antarctica Ice Velocity Map, Version 2 E. Rignot et al.

The Reference Elevation Model of Antarctica ( I. M. Howat et al.

Continental Scale, High Order, High Spatial Resolution, Ice Sheet Modeling Using the Ice Sheet System Model (ISSM) ( E. Larour et al.

Short summary
This study conducted 3D thermodynamic ice sheet model experiments, and modeled temperatures were compared with 15 observed borehole temperature profiles. We found that using incompressibility of ice without sliding agrees well with observed temperature profiles in slow-flow regions, while incorporating sliding in fast-flow regions captures observed temperature profiles. Also, the choice of vertical velocity scheme has a greater impact on the shape of the modeled temperature profile.