气象2011，Vol.37Issue(10)：1262-1269,8.
华南暴雨的气候特征及变化
Climate Characteristics and Variation of Rainstorm in South China
摘要
Abstract
Based on the daily precipitation data at 110 observational stations during 1961-2008 in South China,the climatic characteristics and variation of torrential rain days,rainstorm intensity and contribution which is in annual,the first and second flood seasons in South China were studied by using statistical and diagnostic methods,such as linear regression analysis,Mann-Kendall test,wavelet analysis and the computation of trend coefficients.The results have shown that the annual mean torrential rain days have a decreasing trend from coastal regions to inland in South China in recent 48 years,the highest center is in Dongxing of Guangxi（14.9 d）,and the lowest center is in Longlin of Guangxi（3.2 d）.About 72%of the total torrential rain days occurred in the flood seasons with about 45%in the first season and 27%in the second season.The mean torrential rain days have increased faintly in annual,the first and second flood seasons in South China,but it is not obvious.There are the characteristics of interannual and interdecadal changes.The mean rainstorm intensity has increased faintly in annual and in the first flood season in South China.However,since 2005 it has become obviously.The mean rainstorm intensity has declined in the second flood season,but it is not obvious.The annual mean rainstorm contribution to the total rainfall has increased obviously,but the mean contribution is not obvious in the first and second flood seasons.The wavelet analysis has shown that the changes of torrential rain days,intensity and contribution which is in annual,the first and second flood seasons in South China have two significant periods of 2-3 a and 3-4 a.关键词
暴雨/气候特征/华南/Mann-Kendall检验/小波分析Key words
rainstorm/climate characteristics/South China/Mann-Kendall test/wavelet analysis分类
天文与地球科学引用本文复制引用
伍红雨,杜尧东,秦鹏..华南暴雨的气候特征及变化[J].气象,2011,37(10):1262-1269,8.基金项目
中国气象局气候变化专项 （）
中国适应气候变化项目（ACCC）共同资助 （）
