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中文摘要: 利用月平均风场和OLR资料，通过SVD方法研究了前期6个月、3个月和同期赤道太平洋对流活动异常与我国冬季风场的相互关系，得出：我国冬季环流异常与前期夏季、秋季和同期赤道中太平洋对流活动异常有关，还与同期、前期秋季赤道西太平洋对流活动异常有关。同期的显著区域较大，超前3个月和6个月时显著相关区主要位于长江以南和西北地区。El Nino年，赤道中太平洋对流活动加强，西太平洋对流活动减弱可能是影响我国冬季风减弱的原因之一。
中文关键词: ENSO，对流活动异常，奇异值分解，风场
Abstract:Based on monthly mean OLR data,and wind field at 300hPa,and by applying Singular Value Decomposition (SVD) technique,the relationship between the convective activities over the Pacific and China's winter monsoon was mainly studied. The results show that the instantaneous correlation between monsoon circulation and convective activities over the tropical Pacific is significant. The leading correlation between OLRA (anomalous) over the tropical Pacific and winter monsoon indicated seasonal and regional dependence. China's winter monsoon is obviously not only associated with OLRA over the equational central Pacific in last summer ,but also associated with OLRA over the western tropical Pacific in last fall. The significant areas in China include southern China and some parts of northwest of China.
keywords: ENSO,OLRA,SVD,wind field
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基金项目:“九五”项目
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引用文本：
郭艳君,倪允琪,1998.ENSO期间赤道太平洋对流活动异常对我国冬季风的影响[J].气象,24(9):3-7.
,1998.Effects of the Tropical Pacific Convective Activities on China's Winter Monsoon[J].Meteor Mon,24(9):3-7.
郭艳君,倪允琪,1998.ENSO期间赤道太平洋对流活动异常对我国冬季风的影响[J].气象,24(9):3-7.
,1998.Effects of the Tropical Pacific Convective Activities on China's Winter Monsoon[J].Meteor Mon,24(9):3-7.