The impact of Greenland's deglaciation on the Arctic circulation
The influence of Greenland's deglaciation on the atmospheric winter and summer circulation of the Arctic have been quantified with the high-resolution regional atmospheric model HIRHAM4. Greenland's deglaciation exerts a pronounced influence on the atmospheric winter circulation of the Arc...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , , , |
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2004
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Online Access: | https://curis.ku.dk/portal/da/publications/the-impact-of-greenlands-deglaciation-on-the-arctic-circulation(4c791116-c944-44b3-8bd0-659ee1eb0dce).html https://doi.org/10.1029/2004GL020714 http://www.scopus.com/inward/record.url?scp=11044226913&partnerID=8YFLogxK |
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ftcopenhagenunip:oai:pure.atira.dk:publications/4c791116-c944-44b3-8bd0-659ee1eb0dce 2024-04-28T08:03:38+00:00 The impact of Greenland's deglaciation on the Arctic circulation Dethloff, K. Dorn, W. Rinke, A. Fraedrich, K. Junge, M. Roeckner, E. Gayler, V. Cubasch, U. Christensen, J. H. 2004-10-16 https://curis.ku.dk/portal/da/publications/the-impact-of-greenlands-deglaciation-on-the-arctic-circulation(4c791116-c944-44b3-8bd0-659ee1eb0dce).html https://doi.org/10.1029/2004GL020714 http://www.scopus.com/inward/record.url?scp=11044226913&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Dethloff , K , Dorn , W , Rinke , A , Fraedrich , K , Junge , M , Roeckner , E , Gayler , V , Cubasch , U & Christensen , J H 2004 , ' The impact of Greenland's deglaciation on the Arctic circulation ' , Geophysical Research Letters , vol. 31 , no. 19 . https://doi.org/10.1029/2004GL020714 1610 Global change: Atmosphere (0315 0325) 1620 Global change: Climate dynamics (3309) 3349 Meteorology and atmospheric dynamics: Polar meteorology 3354 Meteorology and atmospheric dynamics: Precipitation (1854) 3364 Meteorology and atmospheric dynamics: Synoptic-scale meteorology article 2004 ftcopenhagenunip https://doi.org/10.1029/2004GL020714 2024-04-04T17:35:12Z The influence of Greenland's deglaciation on the atmospheric winter and summer circulation of the Arctic have been quantified with the high-resolution regional atmospheric model HIRHAM4. Greenland's deglaciation exerts a pronounced influence on the atmospheric winter circulation of the Arctic. The land areas over Siberia and the Canadian archipelago are warmed by up to 5°C. Parts of the Atlantic and the Arctic Ocean are cooled by up to 3°C. A north-eastward shift of the storm tracks occurs over the North Atlantic as well as an increase of synoptic activity over Alaska. The pronounced P-E changes connected with shifts in the synoptic storm tracks during winter would have important consequences for the atmospheric freshwater input into the Arctic Ocean and the Nordic sea with the potential to cause variability in the Arctic Ocean dynamics on centennial to millennial time scales. The significant differences between simulations with and without Greenland result in a decrease of the geopotential height and a dominant barotropic response of the Arctic atmosphere. These changes correspond to an enhanced winter polar vortex and stratospheric conditions more favorable for large Arctic ozone losses. Article in Journal/Newspaper Archipelago Arctic Arctic Arctic Ocean Canadian Archipelago Greenland Nordic Sea North Atlantic Alaska Siberia University of Copenhagen: Research Geophysical Research Letters 31 19 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
1610 Global change: Atmosphere (0315 0325) 1620 Global change: Climate dynamics (3309) 3349 Meteorology and atmospheric dynamics: Polar meteorology 3354 Meteorology and atmospheric dynamics: Precipitation (1854) 3364 Meteorology and atmospheric dynamics: Synoptic-scale meteorology |
spellingShingle |
1610 Global change: Atmosphere (0315 0325) 1620 Global change: Climate dynamics (3309) 3349 Meteorology and atmospheric dynamics: Polar meteorology 3354 Meteorology and atmospheric dynamics: Precipitation (1854) 3364 Meteorology and atmospheric dynamics: Synoptic-scale meteorology Dethloff, K. Dorn, W. Rinke, A. Fraedrich, K. Junge, M. Roeckner, E. Gayler, V. Cubasch, U. Christensen, J. H. The impact of Greenland's deglaciation on the Arctic circulation |
topic_facet |
1610 Global change: Atmosphere (0315 0325) 1620 Global change: Climate dynamics (3309) 3349 Meteorology and atmospheric dynamics: Polar meteorology 3354 Meteorology and atmospheric dynamics: Precipitation (1854) 3364 Meteorology and atmospheric dynamics: Synoptic-scale meteorology |
description |
The influence of Greenland's deglaciation on the atmospheric winter and summer circulation of the Arctic have been quantified with the high-resolution regional atmospheric model HIRHAM4. Greenland's deglaciation exerts a pronounced influence on the atmospheric winter circulation of the Arctic. The land areas over Siberia and the Canadian archipelago are warmed by up to 5°C. Parts of the Atlantic and the Arctic Ocean are cooled by up to 3°C. A north-eastward shift of the storm tracks occurs over the North Atlantic as well as an increase of synoptic activity over Alaska. The pronounced P-E changes connected with shifts in the synoptic storm tracks during winter would have important consequences for the atmospheric freshwater input into the Arctic Ocean and the Nordic sea with the potential to cause variability in the Arctic Ocean dynamics on centennial to millennial time scales. The significant differences between simulations with and without Greenland result in a decrease of the geopotential height and a dominant barotropic response of the Arctic atmosphere. These changes correspond to an enhanced winter polar vortex and stratospheric conditions more favorable for large Arctic ozone losses. |
format |
Article in Journal/Newspaper |
author |
Dethloff, K. Dorn, W. Rinke, A. Fraedrich, K. Junge, M. Roeckner, E. Gayler, V. Cubasch, U. Christensen, J. H. |
author_facet |
Dethloff, K. Dorn, W. Rinke, A. Fraedrich, K. Junge, M. Roeckner, E. Gayler, V. Cubasch, U. Christensen, J. H. |
author_sort |
Dethloff, K. |
title |
The impact of Greenland's deglaciation on the Arctic circulation |
title_short |
The impact of Greenland's deglaciation on the Arctic circulation |
title_full |
The impact of Greenland's deglaciation on the Arctic circulation |
title_fullStr |
The impact of Greenland's deglaciation on the Arctic circulation |
title_full_unstemmed |
The impact of Greenland's deglaciation on the Arctic circulation |
title_sort |
impact of greenland's deglaciation on the arctic circulation |
publishDate |
2004 |
url |
https://curis.ku.dk/portal/da/publications/the-impact-of-greenlands-deglaciation-on-the-arctic-circulation(4c791116-c944-44b3-8bd0-659ee1eb0dce).html https://doi.org/10.1029/2004GL020714 http://www.scopus.com/inward/record.url?scp=11044226913&partnerID=8YFLogxK |
genre |
Archipelago Arctic Arctic Arctic Ocean Canadian Archipelago Greenland Nordic Sea North Atlantic Alaska Siberia |
genre_facet |
Archipelago Arctic Arctic Arctic Ocean Canadian Archipelago Greenland Nordic Sea North Atlantic Alaska Siberia |
op_source |
Dethloff , K , Dorn , W , Rinke , A , Fraedrich , K , Junge , M , Roeckner , E , Gayler , V , Cubasch , U & Christensen , J H 2004 , ' The impact of Greenland's deglaciation on the Arctic circulation ' , Geophysical Research Letters , vol. 31 , no. 19 . https://doi.org/10.1029/2004GL020714 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2004GL020714 |
container_title |
Geophysical Research Letters |
container_volume |
31 |
container_issue |
19 |
_version_ |
1797574693658558464 |