摘要
本文基于中国的726个气象站点（1961年-2000年）的逐句降雨量数据和726个站点（1995年-2002年）的逐日降雨量数据，利用数理统计方法分析了研究区年降水变率、年降水距平、降水空间变化趋势、3d降雨量极值等降雨量特征值，发现近40年来，研究区春、夏两季的降雨量均有明显的增多趋势，秋季则有大幅的减少趋势，冬季的变幅相对来说最小。整体表现出降雨量变化幅度大、降雨量逐年减少、气候暖干化趋势的特点。
Based on the daily precipitation data of 726 meteorological observation stations in China during 1961 to 2000, the climate characteristics including annual precipitation variability, anomaly, trend and extreme value of cumulate precipitation in 3 days etc are analyzed. The results show that： In the recent 40 years, spring and summer precipitation have increasing trends obviously, autumn precipitation has decreasing trend and winter trend is the smallest. The annual precipitation has decreasing trend and its change range has increasing trends.
出处
《山西气象》
2008年第2期10-11,28,共3页
Shanxi Meteorological Quarterly
关键词
降水变率
空间变化
变化趋势
Precipitation Variability
Spacial Change
Change Trend
