华东区域台风降水量演变特征的初步研究

根据国家气候中心1961-2000年华东区域代表站逐日降水量资料，应用任福民等提出的方法，从降水量中分离出台风降水量；分析了华东区域台风降水量的演变特征。结果表明：（1）华东区域各省台风降水量均具有清楚的年际变化，不过各省年际变化并不同步。（2）各省台风降水量均存在多雨段和少雨段，但其相位可以不同。1971—1975年，福建、安徽和江西都处于多雨段，但江苏是少雨段，山东和浙江属正常段。（3）位于东南沿海的江苏、浙江、福建，TC降水量的年代际变化趋势与降水量的年代际变化趋势基本相同：因此，考虑降水年代际变化趋势时，必须关注TC降水的年代变化趋势。

Preliminary Study on the Evolutionary Characteristics of Typhoon Precipitation over East China

Based on the daily precipitation data（1961-2000, provided by National Climate Center） of representative stations in East China, and using the method for partitioning tropical cyclone precipitation, this paper analyses the evolutionary characteristics of typhoon precipitation over East China. Results suggest： firstly, the typhoon precipitation of each province in East China has clearly interannual changes, but they are not synchronized from each other. Secondly, there are wetter and drier periods in the typhoon precipitation of each province, but the phases rrmy be different. For example, during 1971 to 1975, the typhoon precipitation is wetter in Fujian, Anhui and Jiangxi, while drier in Jiangsu, normal in Shandong and Zhejiang. Finally, in southeast littorals （such as in Jiangsu, Zhejiang and Fujian）, since the interdecadal change trend of typhoon precipitation is basically same as that of precipitation, it must be paid attention when we consider the change trend of precipitation.