華東冬季異常冷暖與大氣環(huán)流和海溫的關系

doi:10.3969/2012jms.00**

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華東冬季異常冷暖與大氣環(huán)流和海溫的關系
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                        10.3969/2012jms.00**
                    
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中圖分類號:P456
基金項目:軍內科研項目(105)

The abnormally cold and warm winter in the east area of China and its relationship with general circulation of atmosphere and sea temperature

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利用1951—2007年華東地區(qū)14個代表站冬季（12—2月）溫度資料和北半球500 hPa高度及北太平洋海溫資料，通過合成分析、相關分析等方法，研究了華東地區(qū)冬季氣溫的氣候變化及其與北半球500 hPa高度場、北太平洋海溫場的關系。結果表明：華東地區(qū)冬季氣溫具有明顯的年代際氣候變化特征；前期夏季北半球500 hPa高度距平場和前期春季北太平洋海溫距平場分布可作為華東冬季異常冷暖年的前兆信號；夏季北太平洋中部地區(qū)500 hPa高度場變化及前期10月西太平洋副高強弱變化，對華東地區(qū)冬季氣溫變化具有很好的指示性；春季南赤道海流區(qū)和西風漂流區(qū)海溫異常變化，對華東地區(qū)冬季氣溫變化也具有很好的指示意義。

Abstract:

Using the spring (December-February ) air temperature data of East China from 1951 to 2007, the 500 hPa geopotential height of the North hemisphere, and the SST data of the North Pacific Ocean, the relation between the climatic change of winter atmospheric temperature in the eastern area of China, the 500 hPa geopotential height of the North hemisphere and the sea surface temperature (SST) field have been analysed through methods of composite analysis and relation analysis .It is found that the winter air temperature in the eastern China has obviously decadal climate variation characteristic.The 500 hPa geopotential height of the North hemisphere in the preceding summer and the distribution pattern of the departure of SST in North Pacific Ocean in the preceding spring may be used as the precursory signals for the abnormally cold and warm in the east area of China.The variation of 500 hPa geopotential height of the middle areas in the North Pacific Ocean in summer and the change of subtropical high of the West Pacific Ocean in the preceding October are able to predict variation of the winter atmospheric temperature in the eastern China.The intensity change of the areas of South Equatorial current area and west-wind drift area in the former spring is also meaningful for this purpose.

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任廣成,令聰婧,蔡開華.華東冬季異常冷暖與大氣環(huán)流和海溫的關系.氣象科學,2009,(6):775-780 Ren Guangcheng, Ling Congjing, Cai Kaihua. The abnormally cold and warm winter in the east area of China and its relationship with general circulation of atmosphere and sea temperature. Journal of the Meteorological Sciences,2009,(6):775-780

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