Articles | Volume 18, issue 3
https://doi.org/10.5194/tc-18-1139-2024
https://doi.org/10.5194/tc-18-1139-2024
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. https://doi.org/10.22663/KOPRI-KPDC-00002216.3

Ice Core Borehole Temperatures, Law Dome 1987, Ver. 2 T. van Ommen https://doi.org/10.26179/5dca396372c0c

Temperature Profile of the West Antarctic Ice Sheet Divide Deep Borehole K. M. Cuffey and G. D. Clow https://doi.org/10.7265/N5V69GJW

Temperature of the West Antarctic Ice Sheet H. Engelhardt https://doi.org/10.7265/N5PN93J8

Antarctic dataset in NetCDF format Anne M. Le Brocq et al. https://doi.org/10.1594/PANGAEA.734145

Antarctic geothermal heat flux distribution and estimated Curie Depths, links to gridded files Yasmina M. Martos https://doi.org/10.1594/PANGAEA.882503

MEaSUREs BedMachine Antarctica, Version 1 M. Morlighem https://doi.org/10.5067/C2GFER6PTOS4

Temperature, Lithosphere‐asthenosphere Boundary, and Heat Flux beneath the Antarctic Plate Inferred from Seismic Velocities M. An et al. http://www.seismolab.org/model/antarctica/lithosphere/index.html

The ERA-Interim Reanalysis: Configuration and Performance of the Data Assimilation System (https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era-interim) D. P. Dee et al. https://doi.org/10.1002/qj.828

MEaSUREs InSAR-Based Antarctica Ice Velocity Map, Version 2 E. Rignot et al. https://doi.org/10.5067/D7GK8F5J8M8R

The Reference Elevation Model of Antarctica (https://www.pgc.umn.edu/data/rema/) I. M. Howat et al. https://doi.org/10.5194/tc-13-665-2019

Continental Scale, High Order, High Spatial Resolution, Ice Sheet Modeling Using the Ice Sheet System Model (ISSM) (https://issm.jpl.nasa.gov) E. Larour et al. https://doi.org/10.1029/2011JF002140

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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.