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

Lubin, Dan; Wittenmyer, Robert A.; Bromwich, David H.; Marshall, Gareth J. ORCID: https://orcid.org/0000-0001-8887-7314. 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 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/11554

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