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- M. Sigmond
- Department of Physics University of Toronto Toronto, Ontario Canada
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- J. C. Fyfe
- Canadian Centre for Climate Modelling and Analysis Environment Canada Victoria, British Columbia Canada
書誌事項
- 公開日
- 2010-09
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2010gl044301
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>Since the 1970s sea ice extent has decreased dramatically in the Northern Hemisphere and increased slightly in the Southern Hemisphere, a difference that is potentially explained by ozone depletion in the Southern Hemisphere stratosphere. In this study we consider the impact of stratospheric ozone depletion on Antarctic sea ice extent using a climate model forced with observed stratospheric ozone depletion from 1979 to 2005. Contrary to expectations, our model simulates a year‐round decrease in Antarctic sea ice due to stratospheric ozone depletion. The largest percentage sea ice decrease in our model occurs in the austral summer near the coast of Antarctica, due to a mechanism involving offshore Ekman sea ice transport. The largest absolute decrease is simulated in the austral winter away from the coast of Antarctica, in response to an ocean warming that is consistent with a poleward shift of the large‐scale pattern of sea surface temperature. Our model results strongly suggest that processes not linked to stratospheric ozone depletion must be invoked to explain the observed increase in Antarctic sea ice extent.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 37 (18), L18502-, 2010-09
American Geophysical Union (AGU)