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Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP)

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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.
Type: article
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)

Submitter: Greve Ralf

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