Multi-model estimate of Antarctic ice-shelf basal mass budget and ocean drivers

Galton-Fenzi, Benjamin K.; Porter-Smith, Richard; Cook, Sue; Cougnon, Eva; Gwyther, David E.; Huneke, Wilma G. C.; Rosevear, Madelaine G.; Asay-Davis, Xylar; Boeira Dias, Fabio; Dinniman, Michael S.; Holland, David; Kusahara, Kazuya; Naughten, Kaitlin A.; Nicholls, Keith W.; Pelletier, Charles; Richter, Ole; Seroussi, Hélène; Timmermann, Ralph

doi:10.5194/tc-19-6507-2025

Articles | Volume 19, issue 12

https://doi.org/10.5194/tc-19-6507-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-19-6507-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 12

Research article

|

04 Dec 2025

Research article |

| 04 Dec 2025

Multi-model estimate of Antarctic ice-shelf basal mass budget and ocean drivers

Benjamin K. Galton-Fenzi, Richard Porter-Smith, Sue Cook, Eva Cougnon, David E. Gwyther, Wilma G. C. Huneke, Madelaine G. Rosevear, Xylar Asay-Davis, Fabio Boeira Dias, Michael S. Dinniman, David Holland, Kazuya Kusahara, Kaitlin A. Naughten, Keith W. Nicholls, Charles Pelletier, Ole Richter, Hélène Seroussi, and Ralph Timmermann

Supplement

https://doi.org/10.5194/tc-19-6507-2025-supplement

Data sets

Multi-model estimate of Antarctic ice-shelf basal melting and ocean drivers: data, Ver 1 B. K. Galton-Fenzi et al. https://doi.org/10.26179/q0rh-gt74

Short summary

Quantifying melt and freeze beneath Antarctica’s floating ice shelves is vital to understanding present-day ice-sheet behavior and its potential to contribute to future sea-level rise. We compare 10 ice-shelf/ocean computer simulations with satellite data, providing the first multi-model estimate of melting and refreezing driven by the ocean. This new estimate offers a valuable tool for assessing ice-shelf roles in current and future ice-sheet changes, informing coastal adaptation strategies.