东亚夏季风与重庆夏季降水的关系研究
The Relation Between East Asian Summer Monsoon and Summer Precipitation in Chongqing
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摘要: 选取5种具有代表性的东亚夏季风强度指数分析了东亚夏季风与重庆夏季降水的关系.结果表明,5种东亚夏季风指数都与重庆夏季降水呈显著的负相关关系.在反映重庆夏季降水异常方面,各种东亚夏季风指标都有相当好的辨别能力并各具特色,但也存在一定的差异.还讨论了东亚夏季风强、弱年,重庆夏季降水的异常分布特征,结果发现东亚夏季风强年,夏季整个重庆区域降水偏少,其中偏东地区较偏西地区偏少得更为明显;东亚夏季风弱年,夏季重庆地区降水偏多.Abstract: The relation between East Asian summer monsoon and the summer precipitation in Chongqing is studied using five typical East Asian summer monsoon intensity indexes.The result shows that all the five East Asian summer monsoon intensity indexes are in negative correlation with summer rainfall in Chongqing.All of them can well reflect the abnormality of summer rainfall in Chongqing,though some differences are present among them.Further examination indicates that most of Chongqing,particularly its eastern region,is short of rain in summer in years of strong East Asian summer monsoon.In contrast,Chongqing has more rainfall in summer in years of weak East Asian summer monsoon than in average years.
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