气象科学2013，Vol.33Issue(3)：316-324,9.DOI:10.3969/2012jms.0135
四川秋季连阴雨的变化特征和时空分布
Variation characteristics and space-time distribution of continuous rainfall in autumn of Sichuan
摘要
Abstract
Using 47 a(1961-2007) daily precipitation data from 38 stations in Sichuan during September-November,this paper analyses variation characteristics and space-time distribution of continuous rainfall in autumn of Sichuan from aspects of frequency,precipitation amount,and durative days by means of several modern diagnostic methods in meteorological statistics.The results show that the precipitation amount in autumn in Sichuan makes up about a quarter of annual precipitation,and the precipitation amount of continuous rainfall in autumn accounts for about one fifth,which is 80 percent of the precipitation of autumn rainfall in Sichuan.The frequency,precipitation amount and the durative days all have a decreasing trend in the mass.This decreasing phenomenon is a kind of mutation and appears in later period of 1980s.The continuous rainfall in autumn increases in western Sichuan while decreases in the east as a whole.According to analysis results by EOF,the overriding spatial pattern belongs to the antiphase distribution between the east and the west of Sichuan.关键词
秋季连阴雨/变化特征/时空分布Key words
Continuous rainfall in autumn/ Variation characteristics/ Space-time distribution分类
天文与地球科学引用本文复制引用
江益,范广洲,周定文,吴泽..四川秋季连阴雨的变化特征和时空分布[J].气象科学,2013,33(3):316-324,9.基金项目
公益性行业(气象)科研专项(GYHY201006023) （气象）
国家科技支撑计划项目(2009BAC51B00) （2009BAC51B00）
