摘要
本文利用点相关普查和经验正交函数展开分析了北半球夏季500hPa位势高度场的年际变化特征,指出在北半球夏季主要存在4种遥相关型,它们分别被称作亚洲/北美型、欧亚型、东北太平洋型和北美/西欧型.其中前两种遥相关型和东亚夏季大气环流年际异常有直接的联系.北半球夏季遥相关型的揭示对于研究东亚大气环流年际变异的机理及其预报有参考价值.
Teleconnection patterns in the interannual variabilities of 500 hPa geopotential height during the Northern Hemisphere summer were studied by the technique of one- point correlation map and EOF analysis. It is shown that there exist four teleconnection patterns over teh Northern Hemisphere summer, which are named as the Asia/North American, the Eurasian, the Northeastern Pacific and the America/Western Europe patterns, respectively. The former two patterns are demonstrated to be directly related to the east Asian general circulation, especially the climate in China . Discovering the four leading teleconnection patterns in summer is very valuable to the long-term forecasting.
出处
《大气科学》
CSCD
北大核心
1992年第5期513-521,共9页
Chinese Journal of Atmospheric Sciences
关键词
北半球
夏季
遥相关
高度场
The Northern Hemisphere
Summer
Teleconnections.
