摘要
Abstract
Based on the daily precipitation data of Fuzhou city during 1961~2010, the spatial and temporal distribution char-acteristics of annual precipitation in this city were analyzed .The results showed that the spatial distribution of annual average precip-itation was extremely uneven , the annual average precipitation varied from 1692.5 mm to 1979.1 mm, and it was more in eastern and northern part , while less in western and southern part .The precipitation existed obvious interannual and interdecadal differ-ences, and it generally showed an increasing trend with the average increasing rate of 25.3 mm/10 a.The precipitation in warm sea-son was more than that in cold season , and the precipitation from April to July was the most within a year , accounting for 54.9%of the annual average precipitation .EOF analysis indicated that the spatial distribution of annual precipitation in Fuzhou city was gen -erally consistent , which was decided by the common weather affecting system and circulation situation ;there was also differences in the spatial distribution of annual precipitation between the north and the south , and between the east and the west , which was caused by the intensity of the affecting system , moving path and geography together .关键词
抚州市/降水/线性趋势/EOF分解/气候特征Key words
Fuzhou city/Precipitation/Linear trend/EOF decomposition/Climatic features分类
天文与地球科学
