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Atmospheric circulation impacts on winter maximum sea ice extent in the west Antarctic Peninsula region (1979-2001)

Harangozo, S.A.. 2006 Atmospheric circulation impacts on winter maximum sea ice extent in the west Antarctic Peninsula region (1979-2001). Geophysical Research Letters, 33 (2), L02502. 4, pp. 10.1029/2005GL024978

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Abstract/Summary

Increasing evidence exists that the strong warming of the West Antarctic Peninsula (WAP) region since the 1950s is related to reduced sea ice that is likely to be due to changes in the atmospheric circulation. Over twenty years of sea ice extent, ice motion and reanalysed near-surface wind data are used to establish that winter ice extent in the West Antarctic Peninsula (WAP) region is largely determined by the meridional (north-south) atmospheric circulation. A remarkably strong ice extent-wind relationship is found in the WAP. No other Antarctic or comparable sub-Arctic sea ice region shows this. Ice motion data confirm wind-induced drift is crucial for extensive winter ice to occur. Reasons for winter ice extent and winds being more strongly correlated in the WAP than in other parts of the Antarctic are discussed along with implications for understanding the observed warming.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1029/2005GL024978
Programmes: BAS Programmes > Global Science in the Antarctic Context (2005-2009) > Antarctic Climate and the Earth System
ISSN: 0094-8276
Additional Information. Not used in RCUK Gateway to Research.: Full text not available from this repository
Additional Keywords: Sea ice ; Winds
NORA Subject Terms: Atmospheric Sciences
Date made live: 30 Aug 2007 14:13
URI: http://nora.nerc.ac.uk/id/eprint/53

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