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华北各区夏季降水年际和年代际变化的地域性特征
引用本文:陈烈庭.华北各区夏季降水年际和年代际变化的地域性特征[J].高原气象,1999,18(4):477-485.
作者姓名:陈烈庭
作者单位:中国科学院大气物理研究所,北京,100029
基金项目: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,分析了上夏季降水标准差的窨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。

关 键 词:华北地区  夏季降水  年际和年代际变化  地域性特征
修稿时间:1999-04-02

REGIONAL FEATURES OF INTERANNUAL AND INTERDECADAL VARIATIONS IN SUMMER PRECIPITATION ANOMALIES OVER NORTH CHINA
CHEN Lie-ting.REGIONAL FEATURES OF INTERANNUAL AND INTERDECADAL VARIATIONS IN SUMMER PRECIPITATION ANOMALIES OVER NORTH CHINA[J].Plateau Meteorology,1999,18(4):477-485.
Authors:CHEN Lie-ting
Abstract: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.
Keywords:North China  Summer precipitation  Interannual and interdecadal variation  Regional features
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