中国西北夏季降水量与500hPa纬偏场的特征分析  

The Characteristic Analysis of Summer Precipitation and 500hpa Latitudinal Deviation Field

作　　者：李栋梁 姚辉 

机构地区：[1]甘肃省兰州干旱气象研究所

出　　处：《气象》1995年第11期22-26,共5页Meteorological Monthly

摘　　要：选取中国西北５省区（陕、甘、宁、青、新）具有代表性的、分布相对均匀的１２９个测站、１９５９—１９８９年６－８月总降水量资料，利用ＥＯＦ方法进行分解。以特征向量和载荷量的空间分布特征，将中国西北夏季降水量场分成５种空间分布型，从不同方面反映其空间变化特征。利用相应的时间系数与同期欧亚５００ｈＰａ纬偏场进行遥相关及典型场的对比分析，给出中国西北夏季降水各型所对应的环流场特征。The total precipitation data of 129 representative stations during June to August from 1959 to 1989 in 5 northwestern provinces of China, was resolved by EOF method.The summer precipitation fields was divided into 5 patterns of space distribution.The teleconnection and typical field of the time coefficient and simultaneous Eurasian 500hpa latitudinal deviation field have been compared. The features of circulation field corresponding to the summer precipitation patterns are given in northwestern of China.

关 键 词：降水 降水量 欧亚纬偏场 遥相关 夏季 

分 类 号：P426.613[天文地球—大气科学及气象学]