Journal
ATMOSPHERIC SCIENCE LETTERS
Volume 11, Issue 3, Pages 161-168Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asl.278
Keywords
North Atlantic Oscillation; Pacific Decadal Oscillation; Atlantic Multidecadal Oscillation
Funding
- National Oceanic and Atmospheric Administration (NOAA) Climate Program Office
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
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In this study, we show that the record-breaking cold temperatures from North America to Europe and Asia during the period of 28 December 2009 to 13 January 2010 are associated with extremely negative values of the North Atlantic Oscillation (NAO) index, which produce northerly surface wind anomalies and cause the southward advection of the cold Arctic air. Corresponded to longer-term variations of Pacific and Atlantic Sea Surface Temperatures (SSTs), the downward trend of the NAO has occurred since the early 1990s. It is speculated that if the downward trend of the NAO continues, more frequent cold outbreaks and heavy snow are likely in the coming years. Published 2010 by John Wiley and Sons, Ltd.
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