江南地区冬季气温异常及其海温关键区

利用江南地区14个有代表性的气象观测站1951年1月～1999年12月的气温资料和1950年1月～1998年12月全球逐月海温格点资料,分析了江南地区49年来冬季气温异常特征,并寻求与气温异常关系密切的海温关键区.结果表明：49年来江南冬季气温呈上升趋势,气温增长率为0.29℃/10年,特别是20世纪80年代中期以后暖冬现象十分显著,大约存在着6.3年和3.3年的周期振荡,且与加利福尼亚西岸海区前年6～8月的海温异常变化有着较好的相关性.

Climatic Characteristics of Winter Temperature in Jiangnan and Crucial Area SST

Based on the data of atmospheric and oceanic temperature, the analysis of the abnormal winter temperature of Jiangnan area and its relationship with the sea surface temperature are made. The results are as below. Jiangnan's winter trends to warm in nearly 50 years, especially since the mid 1980's, its tend coefficient is 0.29 and its period is about 6.3-year and 3.3-year, otherwise, the California sea area is its crucial area.