Arctic circulation regimes
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...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Online Access: | http://dx.doi.org/10.1098/rsta.2014.0160 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0160 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0160 |
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crroyalsociety:10.1098/rsta.2014.0160 2024-09-30T14:28:36+00:00 Arctic circulation regimes Proshutinsky, Andrey Dukhovskoy, Dmitry Timmermans, Mary-Louise Krishfield, Richard Bamber, Jonathan L. 2015 http://dx.doi.org/10.1098/rsta.2014.0160 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0160 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0160 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 373, issue 2052, page 20140160 ISSN 1364-503X 1471-2962 journal-article 2015 crroyalsociety https://doi.org/10.1098/rsta.2014.0160 2024-09-02T04:21:04Z 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. Article in Journal/Newspaper Arctic Arctic Ocean Greenland Sea ice Subarctic The Royal Society Arctic Arctic Ocean Greenland Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373 2052 20140160 |
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Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Proshutinsky, Andrey Dukhovskoy, Dmitry Timmermans, Mary-Louise Krishfield, Richard Bamber, Jonathan L. |
spellingShingle |
Proshutinsky, Andrey Dukhovskoy, Dmitry Timmermans, Mary-Louise Krishfield, Richard Bamber, Jonathan L. Arctic circulation regimes |
author_facet |
Proshutinsky, Andrey Dukhovskoy, Dmitry Timmermans, Mary-Louise Krishfield, Richard 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 |
http://dx.doi.org/10.1098/rsta.2014.0160 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0160 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0160 |
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: Mathematical, Physical and Engineering Sciences volume 373, issue 2052, page 20140160 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
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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1811634189859028992 |