Subglacial hydrology modulates basal sliding response of the Antarctic ice sheet to climate forcing

Kazmierczak, Elise; Sun, Sainan; Coulon, Violaine; Pattyn, Frank

doi:https://doi.org/10.5194/tc-16-4537-2022

Articles | Volume 16, issue 10

https://doi.org/10.5194/tc-16-4537-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Improving the contribution of the land cryosphere to sea level...

https://doi.org/10.5194/tc-16-4537-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 10

Research article

|

27 Oct 2022

Research article |

| 27 Oct 2022

Subglacial hydrology modulates basal sliding response of the Antarctic ice sheet to climate forcing

Elise Kazmierczak, Sainan Sun, Violaine Coulon, and Frank Pattyn

Supplement

https://doi.org/10.5194/tc-16-4537-2022-supplement

Data sets

Subglacial hydrology modulates basal sliding response of the Antarctic ice sheet to climate forcing Elise Kazmierczak, Sainan Sun, Violaine Coulon, and Frank Pattyn https://doi.org/10.5281/zenodo.7118690

MEaSUREs BedMachine Antarctica, Version 2 M. Morlighem https://doi.org/10.5067/E1QL9HFQ7A8M

Model code and software

PARASO source code (no COSMO) (v1.4.2) Charles Pelletier, François Klein, Lars Zipf, Konstanze Haubner, Pierre Mathiot, Frank Pattyn, Ehsan Moravveji, and Sam Vanden Broucke https://doi.org/10.5281/zenodo.5337510

Short summary

The water at the interface between ice sheets and underlying bedrock leads to lubrication between the ice and the bed. Due to a lack of direct observations, subglacial conditions beneath the Antarctic ice sheet are poorly understood. Here, we compare different approaches in which the subglacial water could influence sliding on the underlying bedrock and suggest that it modulates the Antarctic ice sheet response and increases uncertainties, especially in the context of global warming.