北半球冬季环流异常的垂直结构特征  

THE VERTICAL STRUCTURE FEATURE OF THE NORTHERN HEMISPHERE WINTERTIME GENERAL CIRCULATION ANOMALIES

作　　者：周琴芳 黄建平[2] 杨成彬 

机构地区：[1]北京气象中心 [2]兰州大学 [3]科学院兰州高原大气所

出　　处：《气象学报》1989年第2期173-179,共7页Acta Meteorologica Sinica

摘　　要：本文对北半球100,500,700和1000hPa四层高度距平资料,应用相关分析,EOF分解和谐波分析方法,分析了北半球冬季环流异常过程中的垂直结构特征。结果表明:第一特征向量在对流层中具有明显的相当正压性结构,并且在环流异常中占有最大权重,它和半球性的天气异常有明显关系。谐波分析表明大气环流异常的正压性主要和超长波的活动有关。The vertical structure of the Northern Hemisphere wintertime general atmospheric circulation anomalies process is studied by using methods of correlation analysis, EOF analysis and harmonic analysis with geopotential height anomaly data at 100,500,700 and 1000 hPa. The result shows that the first eigenvector, which has apparent relations with abnormal weather of Northern Hemisphere, has a significant barotropical structure feature in the troposphere and has the maximum weight in the general circulation anomalies. The harmonic analysis shows that the equivalent barotopic feature of general circulation anomalies, closely relates with the main activities of the ultra-long waves.

关 键 词：北半球 冬季环流 垂直结构 

分 类 号：P434.5[天文地球—大气科学及气象学]