重庆夏季旱涝的欧亚环流特征分析  

Analysis on Eurasian Circulation of Drought and Flood in Summer of Chongqing

作　　者：刘德 李永华 高阳华 李晶 唐云辉 叶钊 

机构地区：[1]重庆市城市气象工程技术研究中心,重庆401147 [2]重庆市气象台,重庆401147

出　　处：《高原气象》2005年第2期275-279,共5页Plateau Meteorology

基　　金：重庆市科技合作项目"重庆市冷暖旱涝灾害变化及其影响研究";重庆市科技攻关项目"重庆市气象灾害变化及灾害性天气精细化预报研究"共同资助

摘　　要：计算了重庆地区夏季区域降水指数, 采用相关、合成、奇异值分解等多种技术方法分析了重庆地区夏季旱涝的同期夏季和前期冬季欧亚环流特征, 在此基础上定义了关键区环流指数, 并分析了其对重庆地区夏季降水预报的指示意义。The summer precipitation indexes in Chongqing have been calculated. The Eurasian circulation circulation in summer at the same period and winter before it and drought and flood in summer of Chongqing have been analyzed by using the correlation, composite analysis and SVD methods. On the basis of them the circulation indexes in key areas have been defined, and the correlation between the precipitation and the circulation indexes have been discussed, too.

关 键 词：夏季降水 欧亚环流 关键区 

分 类 号：P434[天文地球—大气科学及气象学]