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 north...
Published in: | Nature Climate Change |
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Online Access: | https://curis.ku.dk/portal/da/publications/sustained-mass-loss-of-the-northeast-greenland-ice-sheet-triggered-by-regional-warming(7b5ce7d1-074e-4f5e-a06f-b915624043db).html https://doi.org/10.1038/nclimate2161 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/7b5ce7d1-074e-4f5e-a06f-b915624043db 2024-05-19T07:40:42+00:00 Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming Khan, Shfaqat Abbas Kjær, Kurt H. Bevis, Michael Bamber, Jonathan Wahr, John Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Korsgaard, Niels Jákup Stearns, Leigh A van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj Krog Muresan, Ioana S. 2014 https://curis.ku.dk/portal/da/publications/sustained-mass-loss-of-the-northeast-greenland-ice-sheet-triggered-by-regional-warming(7b5ce7d1-074e-4f5e-a06f-b915624043db).html https://doi.org/10.1038/nclimate2161 eng eng info:eu-repo/semantics/closedAccess Khan , S A , Kjær , K H , Bevis , M , Bamber , J , 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 , pp. 292-299 . https://doi.org/10.1038/nclimate2161 article 2014 ftcopenhagenunip https://doi.org/10.1038/nclimate2161 2024-04-25T00:45:01Z 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 Copenhagen: Research Nature Climate Change 4 4 292 299 |
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Open Polar |
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University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
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 Abbas Kjær, Kurt H. Bevis, Michael Bamber, Jonathan Wahr, John Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Korsgaard, Niels Jákup Stearns, Leigh A van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj Krog Muresan, Ioana S. |
spellingShingle |
Khan, Shfaqat Abbas Kjær, Kurt H. Bevis, Michael Bamber, Jonathan Wahr, John Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Korsgaard, Niels Jákup Stearns, Leigh A van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj Krog Muresan, Ioana S. Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
author_facet |
Khan, Shfaqat Abbas Kjær, Kurt H. Bevis, Michael Bamber, Jonathan Wahr, John Kjeldsen, Kristian Kjellerup Bjørk, Anders Anker Korsgaard, Niels Jákup Stearns, Leigh A van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj Krog Muresan, Ioana S. |
author_sort |
Khan, Shfaqat Abbas |
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://curis.ku.dk/portal/da/publications/sustained-mass-loss-of-the-northeast-greenland-ice-sheet-triggered-by-regional-warming(7b5ce7d1-074e-4f5e-a06f-b915624043db).html https://doi.org/10.1038/nclimate2161 |
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 , 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 , pp. 292-299 . https://doi.org/10.1038/nclimate2161 |
op_rights |
info:eu-repo/semantics/closedAccess |
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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1799480277168291840 |