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北半球环流异常持续性随运动尺度的分布
引用本文:张邦林,刘洁.北半球环流异常持续性随运动尺度的分布[J].高原气象,1991,10(3):248-257.
作者姓名:张邦林  刘洁
作者单位:兰州大学大气科学系,兰州大学大气科学系,贵州省气候资料中心 甘肃省兰州市,甘肃省兰州市
摘    要:

关 键 词:北半球  环流  大气  异常  运动尺度

THE PERSISTENCE DISTRIBUTION OF GENERAL CIRCULATION ANOMALY IN NORTHERN HEMISPHERE WITH KINEMATIC SCALE
Zhang Banglin,Wang Yuxi.THE PERSISTENCE DISTRIBUTION OF GENERAL CIRCULATION ANOMALY IN NORTHERN HEMISPHERE WITH KINEMATIC SCALE[J].Plateau Meteorology,1991,10(3):248-257.
Authors:Zhang Banglin  Wang Yuxi
Abstract:In this paper the persistences of daily 500 hPa geopotential height anomaly on different scales during the period of from March of 1965 to December of 1977 are studied with harmonic and EOF analyses.The harmonic analysis shows that: the persistence on ultra-long wave scale is better than that on long wave scale; in the low latitude area, the persistence on all scales are worse than those in high latitudes when lag time is short. But the case is reversed when the lag time becomes longer because of the rapid decreasing of persistence in high latitudes. The results of EOFs show that the persistence of the first eigenvector and its contribution to total persistence are the largest, and with the decreasing of the eigenvalue, the persistence and its contribution to total persistence become small.
Keywords:Persistence of general circulation anomaly  Harmonic analysis  EOF analysis  Kinematic scale    
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