The Cryosphere
The Cryosphere
TC
Articles | Volume 16, issue 10
Articles | Volume 16, issue 10
https://doi.org/10.5194/tc-16-4053-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-4053-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 10
Research article
 | Highlight paper
 | 
07 Oct 2022
Research article | Highlight paper |  | 07 Oct 2022

The Antarctic contribution to 21st-century sea-level rise predicted by the UK Earth System Model with an interactive ice sheet

Antony Siahaan, Robin S. Smith, Paul R. Holland, Adrian Jenkins, Jonathan M. Gregory, Victoria Lee, Pierre Mathiot, Antony J.​​​​​​​ Payne, Jeff K.​​​​​​​ Ridley, and Colin G. Jones

Data sets

UniCiCles (Unified Model - Community Ice Sheet Model - BISICLES) coupling scripts and wrappers R. S. Smith and A. Siahaan https://pumatest.nerc.ac.uk/svn/UniCiCles_svn

Model code and software

UK Earth System Model version 1.0 UKESM Core Development Team https://code.metoffice.gov.uk/trac/UKESM

Berkeley Ice Sheet Initiative for Climate at Extreme Scales BISICLES Development Team https://anag-repo.lbl.gov/svn/BISICLES

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Co-editor-in-chief
This study draws attention to some important processes for ice sheet mass loss. In particular, the warm-water incursions onto the large ice shelves in the late 21st century, inducing more melt, have big implications for the future contribution to SLR from Antarctica.
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Short summary
The UK Earth System Model is the first to fully include interactions of the atmosphere and ocean with the Antarctic Ice Sheet. Under the low-greenhouse-gas SSP1–1.9 (Shared Socioeconomic Pathway) scenario, the ice sheet remains stable over the 21st century. Under the strong-greenhouse-gas SSP5–8.5 scenario, the model predicts strong increases in melting of large ice shelves and snow accumulation on the surface. The dominance of accumulation leads to a sea level fall at the end of the century.
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