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

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.