长江流域两个典型旱、涝年大气30─60天低频波差异的初步分析  

A STUDY OF THE DIFFERENCE OF LOW-FREQUENCY OSCLLLATION BETWEEN THE TYPICALOOD/DROUGHT YEARS IN CHANGJIANG VALLEY

作　　者：陈丽臻[1] 张先恭[1] 陈隆勋[1] 

机构地区：[1]中国气象科学研究院

出　　处：《应用气象学报》1994年第4期483-488,共6页Journal of Applied Meteorological Science

基　　金：国家自然科学基金

摘　　要：通过对１９８０年和１９８５年大气３０─６０天低频流场的分析，发现长江流域典型旱涝年在低频流场的配置和低频波的传播方向上均有明显差异。涝年（１９８０）低频振荡明显，其传播特征与正常年份相同，而旱年（１９８５）则呈相反趋势。Byandysis of streamline field with 30─60 day low-frequency for the anomalousflood year(1980) and drought ear(1985) over Changjiang valley during the meiyuseason,it is found that there exists a distinct difference for the pattern of low-frequencystreamline field and its propagation direction. The low-frequency wave is obvious and itspropagation feature in the flood year is consistent with that in the normal year,butopposite in drought year。

关 键 词：长江流域 旱涝 低频振荡 低频波传播 

分 类 号：P426.616[天文地球—大气科学及气象学]