【摘要】 将江苏省夏季降水进行EOF分析 ,通过研究降水时空分布的演变特征 ,对江苏省夏季典型旱涝年进行分类。结果表明近二十多年来 ,全省性的旱涝年相对减少 ,而南北旱涝相反的年份开始增多。此外 ,通过研究前期西太平洋副热带高压的变化特征 ,分析其对江苏省夏季旱涝分布变化的影响更多还原

【Abstract】 Jiangsu summer representative drought or flood year is classified by studying evolvement character of Jiangsu summer precipitation space-time distribution with EOF. The result indicates during recent twenty years, the drought or flood years of entirely province relatively decrease, and that the regional drought or flood years increase. Moreover, by studying prophase variety character of the Northwest Pacific subtropical high pressure its effect on the change of distribution of summer drought and flood in Jiangsu is analyzed.更多还原