华北地区夏季降水与全球海温异常的关系  

Relation between the Summer Rainfall Anomalies in North China and the Global SSTA

作　　者：孙燕[1] 王谦谦[2] 钱永甫[3] 张友姝[2] 赵凯[1] 

机构地区：[1]江苏省气象台,江苏南京210008 [2]南京信息工程大学大气科学系,江苏南京210044 [3]南京大学大气科学系,江苏南京210093

出　　处：《高原气象》2006年第6期1127-1138,共12页Plateau Meteorology

基　　金：国家自然科学基金项目(40233037)资助

摘　　要：利用华北17个站1951—2000年的逐月降水资料,与前一年1月到当年12月全球逐月海温距平(1950—1998年)求相关,得到了全球海温影响华北夏季降水的关键影响区为21°~27°N,175°E^175°W,对应的关键影响时段为当年1~3月。然后用SVD方法证实了当年1~3月是与华北夏季降水相关最显著的时段;而所选关键区正是处于一种范围更大的海温分布型的关键部位,而华北地区是所选海温关键区在当年1~3月影响中国东部降水的相关最显著的区域之一。Using the month-to-month pricipitation data at 17 stations over North China in 1951-2000, seeking out the correlation with data of the global SST from January in last year to December in this year, it is found that the Key area of the glolal SSTA influencing on the summer precipitation over North China is 21°～27°N, 175°E～175°W, and corresponding to Key time is from January to March in this year. Then, the SVD method is used to verify from January to March in this year is the most notable period which affect the summer precipitation of North China, and the Key area is the pivotal position of a more spatial type in the global SST field, and the North China is one of most notable area of the East China which is affected by Key area in the global SST field.

关 键 词：华北 海温异常关键区 SVD分析 

分 类 号：P426.6[天文地球—大气科学及气象学]