华北各区夏季降水年际和年代际变化的地域性特征  

REGIONAL FEATURES OF INTERANNUAL AND INTERDECADAL VARIATIONS IN SUMMER PRECIPITATION ANOMALIES OVER NORTH CHINA

作　　者：陈烈庭[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《高原气象》1999年第4期477-485,共9页Plateau Meteorology

基　　金：中国科学院"九.五"重大应用基础研究项目

摘　　要：利用１９５１ ～１９９７ 年华北地区２６ 个测站的６ ～８ 月降水量资料，分析了各站夏季降水标准差的空间分布和降水距平百分率年际和年代际变化的地域性特征。在此基础上，根据各站降水标准差和旱涝的一致性，对华北夏季降水异常进行分区，研究了各区降水长期变化的趋势及其阶段性和跃变的特征。最后，探讨了华北地区目前这个少雨期何时结束的问题。The spatial distribution of standard deviation of summer precipitation and the regional features of the interannual and interdecadal variations of precipitation anomaly percentage are analyzed by using monthly mean precipitation data from June to August during the period of 1951 to 1997 at 26 stations in North China. Then, based on the consistence of the standard deviation and the drought flood appeared at various stations, the division of precipitation anomalies in North China is made, and the long term variation trend of precipitation anomalies in various regions and their stage and climate jump are studied. Finally, it is an important problem when the drought period started from the mid 1960s over North China will end, we shall have a preliminary discussion on this problem.

关 键 词：华北地区 夏季 降水 年代际变化 地域性特征 

分 类 号：P426.614[天文地球—大气科学及气象学]