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Short‐term variation of Eurasian pattern and its relation to winter weather over East Asia
Author(s) -
Sung MiKyung,
Lim GyuHo,
Kwon WonTae,
Boo KyungOn,
Kug JongSeong
Publication year - 2009
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.1774
Subject(s) - east asia , climatology , advection , geography , environmental science , scale (ratio) , wind speed , surface air temperature , meteorology , geology , precipitation , china , physics , cartography , archaeology , thermodynamics
Winter surface air temperature in East Asia is negatively correlated with a wave pattern over the Eurasian continent, called the Eurasian pattern (EU). While previous studies have reported a correlation between the EU and East Asian winter temperature on a monthly mean time scale, this study focuses on the daily scale. To this end, a new definition of the EU index (EUw) was suggested, and daily lag composite maps were constructed with respect to positive and negative peaks of the daily EUw values. Three days after the peak, an apparent temperature fall/rise appears, accompanied by strong wind advection over East Asia. An analysis of the probabilities of cold and warm weather events also shows strong dependence on the EU phase. Copyright © 2008 Royal Meteorological Society