近47年影响重庆汛期降水的气候因子分析研究  

Analysis of Climate Factors Influencing the Flood Season Rainfall in Chongqing in Recent 47 Years

作　　者：周浩[1] 程炳岩[1] 叶钊[1] 唐红玉[1] 

机构地区：[1]重庆市气候中心,重庆401147

出　　处：《西南大学学报（自然科学版）》2010年第9期107-114,共8页Journal of Southwest University(Natural Science Edition)

基　　金：重庆市气象科技课题"重庆短期气候预测精细化业务技术研究"资助

摘　　要：利用1960-2006年重庆地区34个气象站汛期降水资料,分析了该地区汛期降水的气候变化特征,以及与各种气候因子的关系.结果表明,重庆汛期降水存在3～6a的年际变化和17a左右的年代际变化特征,近年来每5～6年就有一次明显的变化过程.亚洲区域极涡面积和强度、亚洲各支夏季风、冬季赤道东太平洋海温对重庆汛期降水均产生显著的影响.Based on the meteorological data of flood season （from June to August） rainfall during 1960-2006 recorded by 34 meteorological stations,the characteristics of climate change of flood season rainfall in Chongqing and the correlation between it and climate factors are studied. The results indicate that the period-oscillation of the flood season rainfall is 3~6 years for inter-annual variability and 17 years for inter-decadal variability,and 5~6 years in recent years. The acreage and power of Asian polar vortex,Asian summer monsoons and the ocean temperature of east Pacific in winter have significant influence on flood season rainfall in Chongqing.

关 键 词：重庆 汛期降水 气候因子 

分 类 号：P457.6[天文地球—大气科学及气象学] P461