Recent Advance in Understanding the Dynamics of the Madden-Julian Oscillation  

作　　者：李天明 

机构地区：[1]International Pacific Research Center and Department of Meteorology,School of Ocean and Earth Science and Technology,University of Hawaii at Manoa [2]Key Laboratory of Meteorological Disaster and College of Atmospheric Science,Nanjing University of Information Science & Technology

出　　处：《Journal of Meteorological Research》2014年第1期1-33,共33页气象学报（英文版）

基　　金：Supported by the United States National Science Foundation(AGS-1106536);Office of Naval Research(N00014-1210450);China National Natural Science Foundation(41375095);China Meteorological Administration Special Public Welfare Research Fund(GYHY201306032)

摘　　要：The Madden-Julian oscillation （MJO） is a dominant atmospheric low-frequency mode in the tropics. In this review article, recent progress in understanding the MJO dynamics is described. Firstly, the fundamental physical processes responsible for MJO eastward phase propagation are discussed. Next, a recent modeling result to address why MJO prefers a planetary zonal scale is presented. The effect of the seasonal mean state on distinctive propagation characteristics between northern winter and summer is discussed in a theoretical framework. Then, the observed precursor signals and the physical mechanism of MJO initiation in the western equatorial Indian Ocean are further discussed. Finally, scale interactions between MJO and higher- frequency eddies are delineated.The Madden-Julian oscillation （MJO） is a dominant atmospheric low-frequency mode in the tropics. In this review article, recent progress in understanding the MJO dynamics is described. Firstly, the fundamental physical processes responsible for MJO eastward phase propagation are discussed. Next, a recent modeling result to address why MJO prefers a planetary zonal scale is presented. The effect of the seasonal mean state on distinctive propagation characteristics between northern winter and summer is discussed in a theoretical framework. Then, the observed precursor signals and the physical mechanism of MJO initiation in the western equatorial Indian Ocean are further discussed. Finally, scale interactions between MJO and higher- frequency eddies are delineated.

关 键 词：Madden-Julian oscillation （MJO） eastward phase propagation physical mechanism of MJOinitiation scale interaction 

分 类 号：P433[天文地球—大气科学及气象学] O313[理学—一般力学与力学基础]