摘要
利用济源1961 2006年逐日降水资料,分析了济源市强降水时空分布特征,结果表明:从20世纪80年代后期到2000年,济源市日降水量≥25.0 mm的大雨及≥50.0 mm的暴雨日数呈逐渐减少趋势;进入2000年以后,日降水量>25.0 mm的大雨日数、≥50.0 mm的暴雨日数频率波动较大,≥100.0 mm的大暴雨日数有所增加。
In this article we use the day by day precipitation climate statistics from 1961 to 2006 of Jiyuan, to study the spatial and temporal distribution characteristic of the severe precipitation. The results show that the trend of the number of daily precipitation days that is greater than or equal to 25.0 mm which is called heavy rain and 50.0 mm which is called rainstorm reduces gradually every year from the late 1980s to 2000. After 2000, the number of the daily precipitation days that is greater than or equal to 25.0 mm and 50.0 rnm fluctuates greatly, and the number of the daily precipitation days that is greater than or equal to 100.0 mm which is called heavy rainstorm increases a little bit.
出处
《气象与环境科学》
2008年第B09期15-17,共3页
Meteorological and Environmental Sciences
关键词
强降水
极端事件
气候变化
severe precipitation
extreme events
climatic change
