Grounding line transient response in marine ice sheet models
Marine ice sheet stability is mostly controlled by the dynamics of the grounding line, i.e.the junction between the grounded ice sheet and the floating ice shelf. Grounding line migration has been investigated in the framework of MISMIP (Marine Ice Sheet Model Intercomparison Project), which princip...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/124112 2023-05-15T16:39:34+02:00 Grounding line transient response in marine ice sheet models Drouet, Anne-Sophie Docquier, David Hindmarsh, Richard Durand, Gael Pattyn, Frank Gagliardini, Olivier Zwinger, Thomas 2013-03-01 2 full-text file(s): application/pdf | application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124112 https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/8/Drouet2013_TC.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/11/doi_105283.pdf en eng uri/info:doi/10.5194/tc-7-395-2013 https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/8/Drouet2013_TC.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/11/doi_105283.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124112 2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/openAccess The Cryosphere, 7 Sciences exactes et naturelles info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2013 ftunivbruxelles 2022-06-12T22:09:17Z Marine ice sheet stability is mostly controlled by the dynamics of the grounding line, i.e.the junction between the grounded ice sheet and the floating ice shelf. Grounding line migration has been investigated in the framework of MISMIP (Marine Ice Sheet Model Intercomparison Project), which principally aimed at investigating steady state solutions. Here we focus on transient behaviour, executing short-term simulations (200 years) of a steady ice sheet perturbed by the release of the buttressing restraint exerted by the ice shelf on the grounded ice upstream. The transient grounding line behaviour of four different flowline ice sheet models has been compared. The models differ in the physics implemented (full-Stokes and Shallow Shelf Approximation), the numerical approach, as well as the grounding line treatment. Their overall response to the loss of buttressing is found to be consistent in terms of grounding line position, rate of surface elevation change and surface velocity. However, large discrepancies (>100%) are observed in terms of ice sheet contribution to sea level. Despite the recent important improvements of marine ice sheet models in their ability to compute steady-state configurations, our results question the reliability of models’ ability to compute reliable sea-level rise projections. info:eu-repo/semantics/published Article in Journal/Newspaper Ice Sheet Ice Shelf The Cryosphere DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
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DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Sciences exactes et naturelles |
spellingShingle |
Sciences exactes et naturelles Drouet, Anne-Sophie Docquier, David Hindmarsh, Richard Durand, Gael Pattyn, Frank Gagliardini, Olivier Zwinger, Thomas Grounding line transient response in marine ice sheet models |
topic_facet |
Sciences exactes et naturelles |
description |
Marine ice sheet stability is mostly controlled by the dynamics of the grounding line, i.e.the junction between the grounded ice sheet and the floating ice shelf. Grounding line migration has been investigated in the framework of MISMIP (Marine Ice Sheet Model Intercomparison Project), which principally aimed at investigating steady state solutions. Here we focus on transient behaviour, executing short-term simulations (200 years) of a steady ice sheet perturbed by the release of the buttressing restraint exerted by the ice shelf on the grounded ice upstream. The transient grounding line behaviour of four different flowline ice sheet models has been compared. The models differ in the physics implemented (full-Stokes and Shallow Shelf Approximation), the numerical approach, as well as the grounding line treatment. Their overall response to the loss of buttressing is found to be consistent in terms of grounding line position, rate of surface elevation change and surface velocity. However, large discrepancies (>100%) are observed in terms of ice sheet contribution to sea level. Despite the recent important improvements of marine ice sheet models in their ability to compute steady-state configurations, our results question the reliability of models’ ability to compute reliable sea-level rise projections. info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Drouet, Anne-Sophie Docquier, David Hindmarsh, Richard Durand, Gael Pattyn, Frank Gagliardini, Olivier Zwinger, Thomas |
author_facet |
Drouet, Anne-Sophie Docquier, David Hindmarsh, Richard Durand, Gael Pattyn, Frank Gagliardini, Olivier Zwinger, Thomas |
author_sort |
Drouet, Anne-Sophie |
title |
Grounding line transient response in marine ice sheet models |
title_short |
Grounding line transient response in marine ice sheet models |
title_full |
Grounding line transient response in marine ice sheet models |
title_fullStr |
Grounding line transient response in marine ice sheet models |
title_full_unstemmed |
Grounding line transient response in marine ice sheet models |
title_sort |
grounding line transient response in marine ice sheet models |
publishDate |
2013 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124112 https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/8/Drouet2013_TC.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/11/doi_105283.pdf |
genre |
Ice Sheet Ice Shelf The Cryosphere |
genre_facet |
Ice Sheet Ice Shelf The Cryosphere |
op_source |
The Cryosphere, 7 |
op_relation |
uri/info:doi/10.5194/tc-7-395-2013 https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/8/Drouet2013_TC.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/124112/11/doi_105283.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/124112 |
op_rights |
2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/openAccess |
_version_ |
1766029905331486720 |