Relationship between PDO and Interdecadal Change of Winter Temperature in China from 1951 to 2013
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Abstract:
Relationships between Pacific Decadal Oscillation (PDO) and winter temperature in China and their characteristics are investigated by using the statistical method at the interrannual and interdecadal scalesThe correlation coefficients are calculated between the PDO index time series during the period of 1951 to 2016 and the observed surface air temperature of 160 stations throughout ChinaThe results exhibit that the relationship between PDO interannual variability and winter temperatures in China is not significant, but dramatically close relationship with China’s winter temperature interdecadal variability; in the PDO positive (negative) phase, the temperature is generally high (low). The influence mechanisms of PDO on China’s winter temperature are characterized by the following: in the PDO positive (negative) phase, the sea level pressure field in Siberian is weak (strong); the 500 hPa height field in the east Asian is weak (strong); and the 200 hPa zonal wind field in the east Asian jet stream is weak (strong), resulting in the high (low) winter temperature of China
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.