Modelling the evolution of the Antarctic ice sheet since the last interglacial
We present the effects of changing two sliding parameters, a deformational velocity parameter and two bedrock deflection parameters on the evolution of the Antarctic ice sheet over the period from the last interglacial until the present. These sensitivity experiments have been conducted by running t...
Published in: | The Cryosphere |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://research.vu.nl/en/publications/60f98792-975a-4706-95b4-2d0bb590b50b https://doi.org/10.5194/tc-8-1347-2014 https://hdl.handle.net/1871.1/60f98792-975a-4706-95b4-2d0bb590b50b http://www.scopus.com/inward/record.url?scp=84905221778&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84905221778&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/60f98792-975a-4706-95b4-2d0bb590b50b 2024-05-19T07:30:57+00:00 Modelling the evolution of the Antarctic ice sheet since the last interglacial Maris, M. N.A. De Boer, B. Ligtenberg, S. R.M. Crucifix, M. Van De Berg, W. J. Oerlemans, J. 2014-07-30 https://research.vu.nl/en/publications/60f98792-975a-4706-95b4-2d0bb590b50b https://doi.org/10.5194/tc-8-1347-2014 https://hdl.handle.net/1871.1/60f98792-975a-4706-95b4-2d0bb590b50b http://www.scopus.com/inward/record.url?scp=84905221778&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84905221778&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/60f98792-975a-4706-95b4-2d0bb590b50b info:eu-repo/semantics/openAccess Maris , M N A , De Boer , B , Ligtenberg , S R M , Crucifix , M , Van De Berg , W J & Oerlemans , J 2014 , ' Modelling the evolution of the Antarctic ice sheet since the last interglacial ' , The Cryosphere , vol. 8 , no. 4 , pp. 1347-1360 . https://doi.org/10.5194/tc-8-1347-2014 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2014 ftvuamstcris https://doi.org/10.5194/tc-8-1347-2014 2024-04-23T03:00:38Z We present the effects of changing two sliding parameters, a deformational velocity parameter and two bedrock deflection parameters on the evolution of the Antarctic ice sheet over the period from the last interglacial until the present. These sensitivity experiments have been conducted by running the dynamic ice model ANICE forward in time. The temporal climatological forcing is established by interpolating between two temporal climate states created with a regional climate model. The interpolation is done in such a way that both temperature and surface mass balance follow the European Project for Ice Coring in Antarctica (EPICA) Dome C ice-core proxy record for temperature. We have determined an optimal set of parameter values, for which a realistic grounding-line retreat history and present-day ice sheet can be simulated; the simulation with this set of parameter values is defined as the reference simulation. An increase of sliding with respect to this reference simulation leads to a decrease of the Antarctic ice volume due to enhanced ice velocities on mainly the West Antarctic ice sheet. The effect of changing the deformational velocity parameter mainly yields a change in east Antarctic ice volume. Furthermore, we have found a minimum in the Antarctic ice volume during the mid-Holocene, in accordance with observations. This is a robust feature in our model results, where the strength and the timing of this minimum are both dependent on the investigated parameters. More sliding and a slower responding bedrock lead to a stronger minimum which emerges at an earlier time. From the model results, we conclude that the Antarctic ice sheet has contributed 10.7 ± 1.3 m of eustatic sea level to the global ocean from the last glacial maximum (about 16 ka for the Antarctic ice sheet) until the present. Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core Ice Sheet The Cryosphere Vrije Universiteit Amsterdam (VU): Research Portal The Cryosphere 8 4 1347 1360 |
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Open Polar |
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Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Maris, M. N.A. De Boer, B. Ligtenberg, S. R.M. Crucifix, M. Van De Berg, W. J. Oerlemans, J. Modelling the evolution of the Antarctic ice sheet since the last interglacial |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
We present the effects of changing two sliding parameters, a deformational velocity parameter and two bedrock deflection parameters on the evolution of the Antarctic ice sheet over the period from the last interglacial until the present. These sensitivity experiments have been conducted by running the dynamic ice model ANICE forward in time. The temporal climatological forcing is established by interpolating between two temporal climate states created with a regional climate model. The interpolation is done in such a way that both temperature and surface mass balance follow the European Project for Ice Coring in Antarctica (EPICA) Dome C ice-core proxy record for temperature. We have determined an optimal set of parameter values, for which a realistic grounding-line retreat history and present-day ice sheet can be simulated; the simulation with this set of parameter values is defined as the reference simulation. An increase of sliding with respect to this reference simulation leads to a decrease of the Antarctic ice volume due to enhanced ice velocities on mainly the West Antarctic ice sheet. The effect of changing the deformational velocity parameter mainly yields a change in east Antarctic ice volume. Furthermore, we have found a minimum in the Antarctic ice volume during the mid-Holocene, in accordance with observations. This is a robust feature in our model results, where the strength and the timing of this minimum are both dependent on the investigated parameters. More sliding and a slower responding bedrock lead to a stronger minimum which emerges at an earlier time. From the model results, we conclude that the Antarctic ice sheet has contributed 10.7 ± 1.3 m of eustatic sea level to the global ocean from the last glacial maximum (about 16 ka for the Antarctic ice sheet) until the present. |
format |
Article in Journal/Newspaper |
author |
Maris, M. N.A. De Boer, B. Ligtenberg, S. R.M. Crucifix, M. Van De Berg, W. J. Oerlemans, J. |
author_facet |
Maris, M. N.A. De Boer, B. Ligtenberg, S. R.M. Crucifix, M. Van De Berg, W. J. Oerlemans, J. |
author_sort |
Maris, M. N.A. |
title |
Modelling the evolution of the Antarctic ice sheet since the last interglacial |
title_short |
Modelling the evolution of the Antarctic ice sheet since the last interglacial |
title_full |
Modelling the evolution of the Antarctic ice sheet since the last interglacial |
title_fullStr |
Modelling the evolution of the Antarctic ice sheet since the last interglacial |
title_full_unstemmed |
Modelling the evolution of the Antarctic ice sheet since the last interglacial |
title_sort |
modelling the evolution of the antarctic ice sheet since the last interglacial |
publishDate |
2014 |
url |
https://research.vu.nl/en/publications/60f98792-975a-4706-95b4-2d0bb590b50b https://doi.org/10.5194/tc-8-1347-2014 https://hdl.handle.net/1871.1/60f98792-975a-4706-95b4-2d0bb590b50b http://www.scopus.com/inward/record.url?scp=84905221778&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84905221778&partnerID=8YFLogxK |
genre |
Antarc* Antarctic Antarctica EPICA ice core Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core Ice Sheet The Cryosphere |
op_source |
Maris , M N A , De Boer , B , Ligtenberg , S R M , Crucifix , M , Van De Berg , W J & Oerlemans , J 2014 , ' Modelling the evolution of the Antarctic ice sheet since the last interglacial ' , The Cryosphere , vol. 8 , no. 4 , pp. 1347-1360 . https://doi.org/10.5194/tc-8-1347-2014 |
op_relation |
https://research.vu.nl/en/publications/60f98792-975a-4706-95b4-2d0bb590b50b |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-8-1347-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
4 |
container_start_page |
1347 |
op_container_end_page |
1360 |
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1799468801163526144 |