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 n...
Published in: | Nature Climate Change |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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2014
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Online Access: | https://orbit.dtu.dk/en/publications/6e5cf9fb-d3e6-432c-a81c-de395548567f https://doi.org/10.1038/NCLIMATE2161 http://www.nature.com/nclimate/journal/v4/n4/pdf/nclimate2161.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/6e5cf9fb-d3e6-432c-a81c-de395548567f 2024-06-23T07:53:01+00:00 Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming Khan, Shfaqat Abbas Kjaer, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian Kjellerup Bjork, Anders A. Korsgaard, Niels J. Stearns, Leigh A. van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana Stefania 2014 https://orbit.dtu.dk/en/publications/6e5cf9fb-d3e6-432c-a81c-de395548567f https://doi.org/10.1038/NCLIMATE2161 http://www.nature.com/nclimate/journal/v4/n4/pdf/nclimate2161.pdf eng eng https://orbit.dtu.dk/en/publications/6e5cf9fb-d3e6-432c-a81c-de395548567f info:eu-repo/semantics/closedAccess Khan , S A , Kjaer , K H , Bevis , M , Bamber , J L , Wahr , J , Kjeldsen , K K , Bjork , 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 ENVIRONMENTAL METEOROLOGY SEA-LEVEL RISE JAKOBSHAVN ISBRAE OUTLET GLACIERS CLIMATE FLUCTUATIONS MODEL FLOW /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action article 2014 ftdtupubl https://doi.org/10.1038/NCLIMATE2161 2024-06-11T14:37:53Z 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 Isbrae) 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 Technical University of Denmark: DTU Orbit Greenland Nature Climate Change 4 4 292 299 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
ENVIRONMENTAL METEOROLOGY SEA-LEVEL RISE JAKOBSHAVN ISBRAE OUTLET GLACIERS CLIMATE FLUCTUATIONS MODEL FLOW /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
ENVIRONMENTAL METEOROLOGY SEA-LEVEL RISE JAKOBSHAVN ISBRAE OUTLET GLACIERS CLIMATE FLUCTUATIONS MODEL FLOW /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Khan, Shfaqat Abbas Kjaer, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian Kjellerup Bjork, Anders A. Korsgaard, Niels J. Stearns, Leigh A. van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana Stefania Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming |
topic_facet |
ENVIRONMENTAL METEOROLOGY SEA-LEVEL RISE JAKOBSHAVN ISBRAE OUTLET GLACIERS CLIMATE FLUCTUATIONS MODEL FLOW /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
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 Isbrae) 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 Kjaer, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian Kjellerup Bjork, Anders A. Korsgaard, Niels J. Stearns, Leigh A. van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana Stefania |
author_facet |
Khan, Shfaqat Abbas Kjaer, Kurt H. Bevis, Michael Bamber, Jonathan L. Wahr, John Kjeldsen, Kristian Kjellerup Bjork, Anders A. Korsgaard, Niels J. Stearns, Leigh A. van den Broeke, Michiel R. Liu, Lin Larsen, Nicolaj K. Muresan, Ioana Stefania |
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://orbit.dtu.dk/en/publications/6e5cf9fb-d3e6-432c-a81c-de395548567f https://doi.org/10.1038/NCLIMATE2161 http://www.nature.com/nclimate/journal/v4/n4/pdf/nclimate2161.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet Jakobshavn |
genre_facet |
glacier Greenland Ice Sheet Jakobshavn |
op_source |
Khan , S A , Kjaer , K H , Bevis , M , Bamber , J L , Wahr , J , Kjeldsen , K K , Bjork , 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://orbit.dtu.dk/en/publications/6e5cf9fb-d3e6-432c-a81c-de395548567f |
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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1802644491697389568 |