福建省年降水时空变化特征

基于1961-2010年福建省64个县域气象观测站的降水数据，采用趋势分析、回归分析、EOF分解和REOF分解等方法，分析了福建省年平均降水的时空变化特征．结果表明，1961—2010年，福建省年平均降水量呈增长趋势，趋势系数为0．178，回归系数为2．866mm·a-1．福建省的年降水从空间上主要可分为3个区，1区主要位于闽北和闺中地区，2区主要位于闽南和中南部沿海，3区主要位于闽东地区，其中1区的年降水量最大．

Temporal and spatial characteristics of annual precipitation in Fujian Province

The temporal and spatial characteristics of annual precipitation in Fujian Province from 1961 to 2010 were analyzed basedon the data collected from 64 observational stations by statistical methods, including tendency analysis, regression analysis, empiri-cal orthogonal function （EOF） and rotated EOF （REOF）. The results indicated that the amount of annual precipitation in Fujianduring the period from 1961 to 2010 showed an increasing trend. The tendency coefficient and regression coefficient reached 0. 178and 2.866mm·a-1, respectively. Meanwhile, the spatial distribution of annual precipitation in Fnjian Province could be dividedinto three regions： the first region was mainly in the north and middle part of Fujian Province; the second region was mainly in thesouth and middle-south coastal of Fujian Province; the third region was mainly in the east part of Fujian Province. The amount ofannual precipitation in the first region was the largest.