Decreasing Trend in Summer Precipitation over the Western Sichuan Basin since the 1950s

作     者：LU Ri-Yu YE Hong 

作者机构：State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of AtmosphericPhysics Chinese Academy of Sciences Beijing 100029 China 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2011年第4卷第2期

页      面：114-117页

学科分类：0820[工学-石油与天然气工程] 080706[工学-化工过程机械] 07[理学] 070601[理学-气象学] 08[工学] 0807[工学-动力工程及工程热物理] 0706[理学-大气科学] 082003[工学-油气储运工程] 

基　　金：supported by the National Basic Research Program of China(Grant No.2009CB421400) the National Natural Science Foundation of China(Grant No.40725016) 

主　　题：summer precipitation decreasing trend thewestern Sichuan basin observational station data 

摘      要：Changing precipitation in the densely populated Sichuan basin may have a great impact on human life. This study analyzes the change in summer precipitation since 1951 over the western Sichuan basin, one of the regions of the heaviest rainfall in China, by using two datasets provided by the Chinese Meteorological Data Center. The results indicate that summer (from June to September) precipitation over the western Sichuan basin shows a significantly decreasing trend. The summer precipitation over this region has decreased by about 20% since the 1950s, with a rate of decrease of about 40 mm per decade.