摘要
本文首先根据季风气压场特征定义了冬季季风强度指数,并对该指数与东亚气温之关系作了分析,发现两者存在显著的负相关关系。文中还分析了与两者联系的大气环流过程,指出了前期夏季北半球主要大气活动中心对东亚冬季气温趋势的指示作用以及高空500hPa西风环流与低空冬季季风气流强弱方面的联系。
By using the pressure field of winter monsoon,winter monsoon intensity index is defined,There is a better positive correlation between winter monsoon intensity index and the grade of temperature in various regions of China.Winter monsoon,intensity index is closely related to the grade of mean temperature in winter in China.The major atmospheric action centers over the northern hemisphere in summet are the precursors of the tendency of Winter air temperature over East Asia region.Winter monsoon influences not only our country,but also Korea,the far southeast part of USSR and Japan,etc.The relationship between 500 hPa circulation pattern and winter monsoon intensity is discussed.
出处
《地理科学》
CSSCI
CSCD
北大核心
1990年第3期257-263,共7页
Scientia Geographica Sinica
关键词
冬季
季风
东亚
气温
气候
Winter monsoon
Air tempelature over East Asia
Climatic anal sis
