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 o...
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ftleibnizopen:oai:oai.leibnizopen.de:o5AFyYkBdbrxVwz6bIol 2023-08-27T04:04:16+02:00 Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) Sun, Sainan Pattyn, Frank Simon, Erika G. Albrecht, Torsten Cornford, Stephen Calov, Reinhard Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Goelzer Golledge, Nicholas R. Greve, Ralf Hoffman, Matthew J. Humbert, Angelika Kazmierczak, Elise Kleiner, Thomas Leguy, Gunter R. Lipscomb, William H. Martin, Daniel Morlighem, Mathieu Nowicki, Sophie Pollard, David Price, Stephen Quiquet, Aurélien Seroussi, Hélène Schlemm, Tanja Sutter, Johannes van de Wal, Roderik S.W. Winkelmann, Ricarda Zhang, Tong 2020 application/pdf https://oa.tib.eu/renate/handle/123456789/7267 https://doi.org/10.34657/6314 eng eng Cambridge : Cambridge University Press CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ Journal of glaciology 66 (2020), Nr. 260 Antarctic glaciology ice shelves ice-sheet modelling 550 article Text 2020 ftleibnizopen https://doi.org/10.34657/6314 2023-08-06T23:19:28Z 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. Copyright © The Author(s) 2020. publishedVersion Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Journal of Glaciology LeibnizOpen (The Leibniz Association) Antarctic East Antarctica The Antarctic West Antarctic Ice Sheet |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
Antarctic glaciology ice shelves ice-sheet modelling 550 |
spellingShingle |
Antarctic glaciology ice shelves ice-sheet modelling 550 Sun, Sainan Pattyn, Frank Simon, Erika G. Albrecht, Torsten Cornford, Stephen Calov, Reinhard Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Goelzer Golledge, Nicholas R. Greve, Ralf Hoffman, Matthew J. Humbert, Angelika Kazmierczak, Elise Kleiner, Thomas Leguy, Gunter R. Lipscomb, William H. Martin, Daniel Morlighem, Mathieu Nowicki, Sophie Pollard, David Price, Stephen Quiquet, Aurélien Seroussi, Hélène Schlemm, Tanja Sutter, Johannes van de Wal, Roderik S.W. Winkelmann, Ricarda Zhang, Tong Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP) |
topic_facet |
Antarctic glaciology ice shelves ice-sheet modelling 550 |
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 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. Copyright © The Author(s) 2020. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Sun, Sainan Pattyn, Frank Simon, Erika G. Albrecht, Torsten Cornford, Stephen Calov, Reinhard Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Goelzer Golledge, Nicholas R. Greve, Ralf Hoffman, Matthew J. Humbert, Angelika Kazmierczak, Elise Kleiner, Thomas Leguy, Gunter R. Lipscomb, William H. Martin, Daniel Morlighem, Mathieu Nowicki, Sophie Pollard, David Price, Stephen Quiquet, Aurélien Seroussi, Hélène Schlemm, Tanja Sutter, Johannes van de Wal, Roderik S.W. Winkelmann, Ricarda Zhang, Tong |
author_facet |
Sun, Sainan Pattyn, Frank Simon, Erika G. Albrecht, Torsten Cornford, Stephen Calov, Reinhard Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Goelzer Golledge, Nicholas R. Greve, Ralf Hoffman, Matthew J. Humbert, Angelika Kazmierczak, Elise Kleiner, Thomas Leguy, Gunter R. Lipscomb, William H. Martin, Daniel Morlighem, Mathieu Nowicki, Sophie Pollard, David Price, Stephen Quiquet, Aurélien Seroussi, Hélène Schlemm, Tanja Sutter, Johannes van de Wal, Roderik S.W. Winkelmann, Ricarda Zhang, Tong |
author_sort |
Sun, Sainan |
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) |
publisher |
Cambridge : Cambridge University Press |
publishDate |
2020 |
url |
https://oa.tib.eu/renate/handle/123456789/7267 https://doi.org/10.34657/6314 |
geographic |
Antarctic East Antarctica The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic East Antarctica The Antarctic West Antarctic Ice Sheet |
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 66 (2020), Nr. 260 |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.34657/6314 |
_version_ |
1775350303638421504 |