Title: | Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
Authors: | Sun, Sainan Browse this author |
Pattyn, Frank Browse this author |
Simon, Erika G Browse this author |
Albrecht, Torsten Browse this author |
Cornford, Stephen Browse this author |
Calov, Reinhard Browse this author |
Dumas, Christophe Browse this author |
Gillet-Chaulet, Fabien Browse this author |
Goelzer, Heiko Browse this author |
Golledge, Nicholas R Browse this author |
Greve, Ralf Browse this author →KAKEN DB |
Hoffman, Matthew J Browse this author |
Humbert, Angelika Browse this author |
Kazmierczak, Elise Browse this author |
Kleiner, Thomas Browse this author |
Leguy, Gunter R Browse this author |
Lipscomb, William H Browse this author |
Martin, Daniel Browse this author |
Morlighem, Mathieu Browse this author |
Nowicki, Sophie Browse this author |
Pollard, David Browse this author |
Price, Stephen Browse this author |
Quiquet, Aurélien Browse this author |
Seroussi, Hélène Browse this author |
Schlemm, Tanja Browse this author |
Sutter, Johannes Browse this author |
van de Wal, Roderik S. W Browse this author |
Winkelmann, Ricarda Browse this author |
Zhang, Tong Browse this author |
Issue Date: | 14-Sep-2020 |
Publisher: | International Glaciological Society |
Journal Title: | Journal of Glaciology |
Volume: | 66 |
Issue: | 260 |
Start Page: | 891 |
End Page: | 904 |
Publisher DOI: | 10.1017/jog.2020.67 |
Abstract: | Antarctica's ice shelves modulate the grounded ice flow, and weakening of ice shelves due to climate forcing will decrease their ‘buttressing’ effect, causing a response in the grounded ice. While the processes governing ice-shelf weakening are complex, uncertainties in the response of the grounded ice sheet are also difficult to assess. The Antarctic BUttressing Model Intercomparison Project (ABUMIP) compares ice-sheet model responses to decrease in buttressing by investigating the ‘end-member’ scenario of total and sustained loss of ice shelves. Although unrealistic, this scenario enables gauging the sensitivity of an ensemble of 15 ice-sheet models to a total loss of buttressing, hence exhibiting the full potential of marine ice-sheet instability. All models predict that this scenario leads to multi-metre (1–12 m) sea-level rise over 500 years from present day. West Antarctic ice sheet collapse alone leads to a 1.91–5.08 m sea-level rise due to the marine ice-sheet instability. Mass loss rates are a strong function of the sliding/friction law, with plastic laws cause a further destabilization of the Aurora and Wilkes Subglacial Basins, East Antarctica. Improvements to marine ice-sheet models have greatly reduced variability between modelled ice-sheet responses to extreme ice-shelf loss, e.g. compared to the SeaRISE assessments. |
Rights: | http://creativecommons.org/licenses/by/4.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/79911 |
Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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