Arctic circulation regimes
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Philosophical Transactions of the Royal Society A 373 (2015): 20140160, doi:10.1098/rsta.2014.0160. Between 1948 and 1996, mean annual environmental...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/7697 2023-05-15T14:32:56+02:00 Arctic circulation regimes Proshutinsky, Andrey Dukhovskoy, Dmitry S. Timmermans, Mary-Louise Krishfield, Richard A. Bamber, Jonathan L. 2015-09-07 application/pdf https://hdl.handle.net/1912/7697 en_US eng The Royal Society https://doi.org/10.1098/rsta.2014.0160 Philosophical Transactions of the Royal Society A 373 (2015): 20140160 https://hdl.handle.net/1912/7697 doi:10.1098/rsta.2014.0160 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY Philosophical Transactions of the Royal Society A 373 (2015): 20140160 doi:10.1098/rsta.2014.0160 Arctic climate variability Circulation regimes Freshwater and heat content Article 2015 ftwhoas https://doi.org/10.1098/rsta.2014.0160 2022-05-28T22:59:27Z © The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Philosophical Transactions of the Royal Society A 373 (2015): 20140160, doi:10.1098/rsta.2014.0160. Between 1948 and 1996, mean annual environmental parameters in the Arctic experienced a well-pronounced decadal variability with two basic circulation patterns: cyclonic and anticyclonic alternating at 5 to 7 year intervals. During cyclonic regimes, low sea-level atmospheric pressure (SLP) dominated over the Arctic Ocean driving sea ice and the upper ocean counterclockwise; the Arctic atmosphere was relatively warm and humid, and freshwater flux from the Arctic Ocean towards the subarctic seas was intensified. By contrast, during anticylonic circulation regimes, high SLP dominated driving sea ice and the upper ocean clockwise. Meanwhile, the atmosphere was cold and dry and the freshwater flux from the Arctic to the subarctic seas was reduced. Since 1997, however, the Arctic system has been under the influence of an anticyclonic circulation regime (17 years) with a set of environmental parameters that are atypical for this regime. We discuss a hypothesis explaining the causes and mechanisms regulating the intensity and duration of Arctic circulation regimes, and speculate how changes in freshwater fluxes from the Arctic Ocean and Greenland impact environmental conditions and interrupt their decadal variability. Support was provided by US National Science Foundation PLR 1313614, 1203720, 1107277 and 0856531 to A.P., PLR-0804017 to D.D. and by the HYCOM consortium (no. N00014-09-1-0587) to D.D. Article in Journal/Newspaper Arctic Arctic Ocean Greenland Sea ice Subarctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Arctic Ocean Greenland Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373 2052 20140160 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Arctic climate variability Circulation regimes Freshwater and heat content |
spellingShingle |
Arctic climate variability Circulation regimes Freshwater and heat content Proshutinsky, Andrey Dukhovskoy, Dmitry S. Timmermans, Mary-Louise Krishfield, Richard A. Bamber, Jonathan L. Arctic circulation regimes |
topic_facet |
Arctic climate variability Circulation regimes Freshwater and heat content |
description |
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Philosophical Transactions of the Royal Society A 373 (2015): 20140160, doi:10.1098/rsta.2014.0160. Between 1948 and 1996, mean annual environmental parameters in the Arctic experienced a well-pronounced decadal variability with two basic circulation patterns: cyclonic and anticyclonic alternating at 5 to 7 year intervals. During cyclonic regimes, low sea-level atmospheric pressure (SLP) dominated over the Arctic Ocean driving sea ice and the upper ocean counterclockwise; the Arctic atmosphere was relatively warm and humid, and freshwater flux from the Arctic Ocean towards the subarctic seas was intensified. By contrast, during anticylonic circulation regimes, high SLP dominated driving sea ice and the upper ocean clockwise. Meanwhile, the atmosphere was cold and dry and the freshwater flux from the Arctic to the subarctic seas was reduced. Since 1997, however, the Arctic system has been under the influence of an anticyclonic circulation regime (17 years) with a set of environmental parameters that are atypical for this regime. We discuss a hypothesis explaining the causes and mechanisms regulating the intensity and duration of Arctic circulation regimes, and speculate how changes in freshwater fluxes from the Arctic Ocean and Greenland impact environmental conditions and interrupt their decadal variability. Support was provided by US National Science Foundation PLR 1313614, 1203720, 1107277 and 0856531 to A.P., PLR-0804017 to D.D. and by the HYCOM consortium (no. N00014-09-1-0587) to D.D. |
format |
Article in Journal/Newspaper |
author |
Proshutinsky, Andrey Dukhovskoy, Dmitry S. Timmermans, Mary-Louise Krishfield, Richard A. Bamber, Jonathan L. |
author_facet |
Proshutinsky, Andrey Dukhovskoy, Dmitry S. Timmermans, Mary-Louise Krishfield, Richard A. Bamber, Jonathan L. |
author_sort |
Proshutinsky, Andrey |
title |
Arctic circulation regimes |
title_short |
Arctic circulation regimes |
title_full |
Arctic circulation regimes |
title_fullStr |
Arctic circulation regimes |
title_full_unstemmed |
Arctic circulation regimes |
title_sort |
arctic circulation regimes |
publisher |
The Royal Society |
publishDate |
2015 |
url |
https://hdl.handle.net/1912/7697 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Greenland Sea ice Subarctic |
genre_facet |
Arctic Arctic Ocean Greenland Sea ice Subarctic |
op_source |
Philosophical Transactions of the Royal Society A 373 (2015): 20140160 doi:10.1098/rsta.2014.0160 |
op_relation |
https://doi.org/10.1098/rsta.2014.0160 Philosophical Transactions of the Royal Society A 373 (2015): 20140160 https://hdl.handle.net/1912/7697 doi:10.1098/rsta.2014.0160 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsta.2014.0160 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
373 |
container_issue |
2052 |
container_start_page |
20140160 |
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1766306254746025984 |