气象2017，Vol.43Issue(3)：305-314,10.DOI:10.7519/j.issn.1000-0526.2017.03.006
1961—2014年广东小时强降水的变化特征
Variation Characteristics of Hourly Heavy Precipitation in Guangdong During 1961-2014
摘要
Abstract
Based on the hourly precipitation data of 32 meteorological observational stations in Guangdong during 1961-2014,the climatic characteristics and variation of hourly heavy precipitation in annual,the pre- and latter flood season in Guangdong were studied by using statistical diagnostic methods,such as lin-ear regression analysis,Mann-Kendall test,power spectrum analysis and the computation of trend coeffi-cients.The results showed that the mean hourly heavy precipitation hours,intensity,precipitation and contribution in annual,the pre- and latter flood season in Guangdong has a decreasing trend from coastal regions to inland.The change of annual torrential rain days and precipitation is not obvious in the same time.There are obvious differences among the annual hourly heavy precipitation hours and torrential rain days or precipitation.The hourly heavy precipitation hours at most stations in Guangdong has increased obviously,especially in Pearl River Delta.The changes of hourly heavy precipitation hours in annual or the pre-flood season in Guangdong have 3.7 and 22 year periods,and 3 year period in the latter flood season. The hourly heavy precipitation hours in annual and the latter flood season in Guangdong has an abrupt change in 1993-1994,but which is in the pre-flood has not an abrupt change.关键词
小时强降水/变化特征/广东/Mann-Kendall检验/功率谱分析Key words
hourly heavy precipitation/climate characteristic/Guangdong/Mann-Kendall test/power spectrum analysis分类
天文与地球科学引用本文复制引用
伍红雨,李春梅,刘蔚琴..1961—2014年广东小时强降水的变化特征[J].气象,2017,43(3):305-314,10.基金项目
广东省气象局科技项目(2014B04)、广东省水利科技创新项目(2016-31)、广东省气候中心项目(QH201508)和广东省农业厅项目(201501)共同资助 （2014B04）
