摘要
定义了夏季 (6～ 8月 )欧亚中高纬 5 0 0hPa逐日流型指数Ⅰ ,用它确定了 195 9～ 2 0 0 0年夏季欧亚中高纬典型持续流型W、E、C。统计表明 ,流型指数Ⅰ、持续流型与欧亚中高纬 5 0 0hPa环流形势特征及我国东部夏季降水异常关系密切 ,从而证明了它们的合理性和应用价值。
This paper defined a daily index ‘I’ of the summer (from June to August) 500hPa circulation over Asian-European mid-high latitude,and identified the summer typical persistent circulation pattern(W,E,C) over Asian-European mid-high latitude from 1959 to 2000. It is shown by statistical research that the circulation index ‘I’ and the typical persistent circulation pattern tie up with the Asian-European mid-high latitude 500hPa circulation features and the summer precipitation anomalies on east China. Accordingly,their rationality and applicable value were proved.
出处
《气象科学》
CSCD
北大核心
2004年第2期127-136,共10页
Journal of the Meteorological Sciences
基金
中科院重大方向项目ZKCX2 -SW - 2 10
国家自然科学基金资助项目 4 0 10 5 0 0 6资助
关键词
欧亚中高纬
夏季
500hPa
流型指数
典型持续流型
Asian-European mid-high latitude Summer 500 hPa Circulation pattern index Typical persistent circulation pattern
