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Antarctic Peninsula mesoscale cyclone variability and climatic impacts influenced by the SAM

Lubin, Dan; Wittenmyer, Robert A.; Bromwich, David H.; Marshall, Gareth J.. 2008 Antarctic Peninsula mesoscale cyclone variability and climatic impacts influenced by the SAM. Geophysical Research Letters, 35 (2), L02808. 4, pp. 10.1029/2007GL032170

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Abstract/Summary

The frequency of mesoscale cyclones in the Western Antarctic Peninsula (WAP) region during 1991-94 is correlated with the Southern Hemisphere Annular Mode (SAM) index, most strongly during winter and spring. Also, during periods of positive SAM index polarity there is a shift in the storm tracks to favor more east-bound trajectories, consistent with strengthening of circumpolar westerlies. The presence of mesoscale cyclones is associated with positive near-surface-air temperature anomalies in the WAP region year-round, largest during winter.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1029/2007GL032170
Programmes: BAS Programmes > Global Science in the Antarctic Context (2005-2009) > Antarctic Climate and the Earth System
ISSN: 0094-8276
NORA Subject Terms: Meteorology and Climatology
Atmospheric Sciences
Date made live: 18 Jan 2011 09:05
URI: http://nora.nerc.ac.uk/id/eprint/11554

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