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

Sun, S., Pattyn, F., Simon, E. G., Albrecht, T., Cornford, S., Calov, R., Dumas, C., Gillet-Chaulet, F., Goelzer, H., Golledge, N. R., Greve, R., Hoffman, M. J., Humbert, A., Kazmierczak, E., Kleiner, T., Leguy, G. R., Lipscomb, W. H., Martin, D., Morlighem, M., Nowicki, S., Pollard, D., Price, S., Quiquet, A., Seroussi, H., Schlemm, T., Sutter, J., van de Wal, R. S. W., Winkelmann, R., Zhang, T. (2020): Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP). - Journal of Glaciology, 66, 260, 891-904.
https://doi.org/10.1017/jog.2020.67

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 Creators:
Sun, Sainan1, Author
Pattyn, Frank1, Author
Simon, Erika G.1, Author
Albrecht, Torsten2, Author              
Cornford, Stephen1, Author
Calov, Reinhard2, Author              
Dumas, Christophe1, Author
Gillet-Chaulet, Fabien1, Author
Goelzer, Heiko1, Author
Golledge, Nicholas R.1, Author
Greve, Ralf1, Author
Hoffman, Matthew J.1, Author
Humbert, Angelika1, Author
Kazmierczak, Elise1, Author
Kleiner, Thomas1, Author
Leguy, Gunter R.1, Author
Lipscomb, William H.1, Author
Martin, Daniel1, Author
Morlighem, Mathieu1, Author
Nowicki, Sophie1, Author
Pollard, David1, AuthorPrice, Stephen1, AuthorQuiquet, Aurélien1, AuthorSeroussi, Hélène1, AuthorSchlemm, Tanja2, Author              Sutter, Johannes1, Authorvan de Wal, Roderik S. W.1, AuthorWinkelmann, Ricarda2, Author              Zhang, Tong1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              

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Free keywords: Antarctic glaciology; ice-sheet modelling; ice shelves; SPP 1158
 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 buttres-sing 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 func-tion 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.

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Language(s): eng - English
 Dates: 2020-07-172019-12-312020-07-202020-09-142020-09-14
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1017/jog.2020.67
MDB-ID: yes - 3075
PIKDOMAIN: RD1 - Earth System Analysis
Organisational keyword: RD1 - Earth System Analysis
Research topic keyword: Ice
Research topic keyword: Sea-level Rise
Research topic keyword: Tipping Elements
Model / method: PISM-PIK
Organisational keyword: RD4 - Complexity Science
Working Group: Ice Dynamics
Working Group: Ice Dynamics
 Degree: -

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Title: Journal of Glaciology
Source Genre: Journal, SCI, Scopus, p3, oa
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Publ. Info: -
Pages: - Volume / Issue: 66 (260) Sequence Number: - Start / End Page: 891 - 904 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals271
Publisher: Cambridge University Press