Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP)
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...
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Online Access: | https://publications.pik-potsdam.de/pubman/item/item_24904 https://publications.pik-potsdam.de/pubman/item/item_24904_1/component/file_24907/24904oa.pdf |
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ftpotsdamik:oai:publications.pik-potsdam.de:item_24904 2023-10-29T02:32:25+01:00 Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) Sun, S. Pattyn, F. Simon, E. Albrecht, T. Cornford, S. Calov, R. Dumas, C. Gillet-Chaulet, F. Goelzer, H. Golledge, N. Greve, R. Hoffman, M. Humbert, A. Kazmierczak, E. Kleiner, T. Leguy, G. Lipscomb, W. Martin, D. Morlighem, M. Nowicki, S. Pollard, D. Price, S. Quiquet, A. Seroussi, H. Schlemm, T. Sutter, J. van de Wal, R. Winkelmann, R. Zhang, T. 2020-09-14 application/pdf https://publications.pik-potsdam.de/pubman/item/item_24904 https://publications.pik-potsdam.de/pubman/item/item_24904_1/component/file_24907/24904oa.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2020.67 https://publications.pik-potsdam.de/pubman/item/item_24904 https://publications.pik-potsdam.de/pubman/item/item_24904_1/component/file_24907/24904oa.pdf info:eu-repo/semantics/openAccess Journal of Glaciology info:eu-repo/semantics/article 2020 ftpotsdamik https://doi.org/10.1017/jog.2020.67 2023-09-30T17:59:48Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Journal of Glaciology Publication Database PIK (Potsdam Institute for Climate Impact Research) Journal of Glaciology 66 260 891 904 |
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Open Polar |
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Publication Database PIK (Potsdam Institute for Climate Impact Research) |
op_collection_id |
ftpotsdamik |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Sun, S. Pattyn, F. Simon, E. Albrecht, T. Cornford, S. Calov, R. Dumas, C. Gillet-Chaulet, F. Goelzer, H. Golledge, N. Greve, R. Hoffman, M. Humbert, A. Kazmierczak, E. Kleiner, T. Leguy, G. Lipscomb, W. Martin, D. Morlighem, M. Nowicki, S. Pollard, D. Price, S. Quiquet, A. Seroussi, H. Schlemm, T. Sutter, J. van de Wal, R. Winkelmann, R. Zhang, T. |
spellingShingle |
Sun, S. Pattyn, F. Simon, E. Albrecht, T. Cornford, S. Calov, R. Dumas, C. Gillet-Chaulet, F. Goelzer, H. Golledge, N. Greve, R. Hoffman, M. Humbert, A. Kazmierczak, E. Kleiner, T. Leguy, G. Lipscomb, W. Martin, D. Morlighem, M. Nowicki, S. Pollard, D. Price, S. Quiquet, A. Seroussi, H. Schlemm, T. Sutter, J. van de Wal, R. Winkelmann, R. Zhang, T. Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
author_facet |
Sun, S. Pattyn, F. Simon, E. Albrecht, T. Cornford, S. Calov, R. Dumas, C. Gillet-Chaulet, F. Goelzer, H. Golledge, N. Greve, R. Hoffman, M. Humbert, A. Kazmierczak, E. Kleiner, T. Leguy, G. Lipscomb, W. Martin, D. Morlighem, M. Nowicki, S. Pollard, D. Price, S. Quiquet, A. Seroussi, H. Schlemm, T. Sutter, J. van de Wal, R. Winkelmann, R. Zhang, T. |
author_sort |
Sun, S. |
title |
Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
title_short |
Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
title_full |
Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
title_fullStr |
Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
title_full_unstemmed |
Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
title_sort |
antarctic ice sheet response to sudden and sustained ice-shelf collapse (abumip) |
publishDate |
2020 |
url |
https://publications.pik-potsdam.de/pubman/item/item_24904 https://publications.pik-potsdam.de/pubman/item/item_24904_1/component/file_24907/24904oa.pdf |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Journal of Glaciology |
op_source |
Journal of Glaciology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2020.67 https://publications.pik-potsdam.de/pubman/item/item_24904 https://publications.pik-potsdam.de/pubman/item/item_24904_1/component/file_24907/24904oa.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2020.67 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
260 |
container_start_page |
891 |
op_container_end_page |
904 |
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1781053831114653696 |