Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming
The Greenland ice sheet has been one of the largest contributors to global sea-level rise over the past 20 years, accounting for 0.5 mm yr -1 of a total of 3.2 mm yr -1 . A significant portion of this contribution is associated with the speed-up of an increased number of glaciers in southeast and no...
Published in: | Nature Climate Change |
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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://hdl.handle.net/1983/579392c5-cd56-417e-b2ee-cb31c97d1f43 https://research-information.bris.ac.uk/en/publications/579392c5-cd56-417e-b2ee-cb31c97d1f43 https://doi.org/10.1038/nclimate2161 http://www.scopus.com/inward/record.url?scp=84897029482&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/579392c5-cd56-417e-b2ee-cb31c97d1f43 2024-04-28T08:19:53+00:00 Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming Khan, Shfaqat A. Kjær, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian K. Bjørk, Anders A. Korsgaard, Niels J. Stearns, Leigh A. Van Den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana S. 2014-01-01 https://hdl.handle.net/1983/579392c5-cd56-417e-b2ee-cb31c97d1f43 https://research-information.bris.ac.uk/en/publications/579392c5-cd56-417e-b2ee-cb31c97d1f43 https://doi.org/10.1038/nclimate2161 http://www.scopus.com/inward/record.url?scp=84897029482&partnerID=8YFLogxK eng eng https://research-information.bris.ac.uk/en/publications/579392c5-cd56-417e-b2ee-cb31c97d1f43 info:eu-repo/semantics/restrictedAccess Khan , S A , Kjær , K H , Bevis , M , Bamber , J L , Wahr , J , Kjeldsen , K K , Bjørk , A A , Korsgaard , N J , Stearns , L A , Van Den Broeke , M R , Liu , L , Larsen , N K & Muresan , I S 2014 , ' Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming ' , Nature Climate Change , vol. 4 , no. 4 , pp. 292-299 . https://doi.org/10.1038/nclimate2161 article 2014 ftubristolcris https://doi.org/10.1038/nclimate2161 2024-04-03T15:23:47Z The Greenland ice sheet has been one of the largest contributors to global sea-level rise over the past 20 years, accounting for 0.5 mm yr -1 of a total of 3.2 mm yr -1 . A significant portion of this contribution is associated with the speed-up of an increased number of glaciers in southeast and northwest Greenland. Here, we show that the northeast Greenland ice stream, which extends more than 600 km into the interior of the ice sheet, is now undergoing sustained dynamic thinning, linked to regional warming, after more than a quarter of a century of stability. This sector of the Greenland ice sheet is of particular interest, because the drainage basin area covers 16% of the ice sheet (twice that of Jakobshavn Isbræ) and numerical model predictions suggest no significant mass loss for this sector, leading to an under-estimation of future global sea-level rise. The geometry of the bedrock and monotonic trend in glacier speed-up and mass loss suggests that dynamic drawdown of ice in this region will continue in the near future. Article in Journal/Newspaper glacier Greenland Ice Sheet Jakobshavn Jakobshavn isbræ University of Bristol: Bristol Research Nature Climate Change 4 4 292 299 |
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Open Polar |
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University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
The Greenland ice sheet has been one of the largest contributors to global sea-level rise over the past 20 years, accounting for 0.5 mm yr -1 of a total of 3.2 mm yr -1 . A significant portion of this contribution is associated with the speed-up of an increased number of glaciers in southeast and northwest Greenland. Here, we show that the northeast Greenland ice stream, which extends more than 600 km into the interior of the ice sheet, is now undergoing sustained dynamic thinning, linked to regional warming, after more than a quarter of a century of stability. This sector of the Greenland ice sheet is of particular interest, because the drainage basin area covers 16% of the ice sheet (twice that of Jakobshavn Isbræ) and numerical model predictions suggest no significant mass loss for this sector, leading to an under-estimation of future global sea-level rise. The geometry of the bedrock and monotonic trend in glacier speed-up and mass loss suggests that dynamic drawdown of ice in this region will continue in the near future. |
format |
Article in Journal/Newspaper |
author |
Khan, Shfaqat A. Kjær, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian K. Bjørk, Anders A. Korsgaard, Niels J. Stearns, Leigh A. Van Den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana S. |
spellingShingle |
Khan, Shfaqat A. Kjær, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian K. Bjørk, Anders A. Korsgaard, Niels J. Stearns, Leigh A. Van Den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana S. Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
author_facet |
Khan, Shfaqat A. Kjær, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian K. Bjørk, Anders A. Korsgaard, Niels J. Stearns, Leigh A. Van Den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana S. |
author_sort |
Khan, Shfaqat A. |
title |
Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
title_short |
Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
title_full |
Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
title_fullStr |
Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
title_full_unstemmed |
Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
title_sort |
sustained mass loss of the northeast greenland ice sheet triggered by regional warming |
publishDate |
2014 |
url |
https://hdl.handle.net/1983/579392c5-cd56-417e-b2ee-cb31c97d1f43 https://research-information.bris.ac.uk/en/publications/579392c5-cd56-417e-b2ee-cb31c97d1f43 https://doi.org/10.1038/nclimate2161 http://www.scopus.com/inward/record.url?scp=84897029482&partnerID=8YFLogxK |
genre |
glacier Greenland Ice Sheet Jakobshavn Jakobshavn isbræ |
genre_facet |
glacier Greenland Ice Sheet Jakobshavn Jakobshavn isbræ |
op_source |
Khan , S A , Kjær , K H , Bevis , M , Bamber , J L , Wahr , J , Kjeldsen , K K , Bjørk , A A , Korsgaard , N J , Stearns , L A , Van Den Broeke , M R , Liu , L , Larsen , N K & Muresan , I S 2014 , ' Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming ' , Nature Climate Change , vol. 4 , no. 4 , pp. 292-299 . https://doi.org/10.1038/nclimate2161 |
op_relation |
https://research-information.bris.ac.uk/en/publications/579392c5-cd56-417e-b2ee-cb31c97d1f43 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/nclimate2161 |
container_title |
Nature Climate Change |
container_volume |
4 |
container_issue |
4 |
container_start_page |
292 |
op_container_end_page |
299 |
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1797583124091109376 |