The record‐breaking cold temperatures during the winter of 2009/2010 in the Northern Hemisphere

Abstract 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...

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Bibliographic Details
Published in:Atmospheric Science Letters
Main Authors: Wang, Chunzai, Liu, Hailong, Lee, Sang‐Ki
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2010
Subjects:
Arctic
Pacific
North Atlantic
North Atlantic oscillation
Online Access:http://dx.doi.org/10.1002/asl.278
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.278
https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.278
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Summary:Abstract 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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