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- Andrey Proshutinsky
- Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
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- Dmitry Dukhovskoy
- Center for Ocean-Atmospheric Prediction Studies, Florida State University, Tallahassee, FL, USA
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- Mary-Louise Timmermans
- Department of Geology and Geophysics, Yale University, New Haven, CT, USA
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- Richard Krishfield
- Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
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- Jonathan L. Bamber
- School of Geographical Sciences, University of Bristol, Bristol, UK
書誌事項
- 公開日
- 2015-10-13
- 権利情報
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- https://royalsociety.org/journals/ethics-policies/data-sharing-mining/
- DOI
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- 10.1098/rsta.2014.0160
- 公開者
- The Royal Society
この論文をさがす
説明
<jats:p>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.</jats:p>
収録刊行物
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- Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
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Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373 (2052), 20140160-, 2015-10-13
The Royal Society
