戴维斯海峡海冰与华北降水的年际关系及其年代际变化  

The Interannual Relationship between Davis Strait Sea-ice and Rainfall of North China and Its Decadal Variability

作　　者：刘海文[1] 郭品文[1] 张娇[1] 

机构地区：[1]南京气象学院大气科学系,江苏南京210044

出　　处：《南京气象学院学报》2004年第2期253-257,共5页Journal of Nanjing Institute of Meteorology

基　　金：江苏省自然科学基金资助项目(BK20011106);教育部留学回国人员科研启动基金资助项目

摘　　要：利用北极海冰面积指数和中国160站降水资料,探讨了冬季戴维斯海峡海冰和华北7月降水年际变化的相关特征,并分析了二者年际关系的年代际变化。结果表明,冬季戴维斯海峡海冰与华北7月降水在年际时间尺度上呈反相关关系,1974年前后两者的年际关系由反相关较强转为变弱。冬季戴维斯海峡海冰与中国7月160站降水的年际相关分布在1974年前后由东部型转变为江淮型。The interannual correlation of the winter sea-ice of Davis Strait with July rainfall of North China and its decadal variability are analyzed in this paper by using the Arctic sea-ice area data and the monthly rainfall of 160 stations in China.Analysis results show that there exists a negative interannual correlation between winter sea-ice of Davis Strait and July rainfall at 160 stations in China,with a turning point from a strong negative correlation to a weak negative correlation at 1974.The interannual correlation pattern between winter sea-ice of Davis Strait and July rainfall of North China has changed from the East-pattern to the Jianghuai-pattern around 1974.

关 键 词：海冰 华北降水 年际关系 年代际变化 

分 类 号：P731.15[天文地球—海洋科学]