An Analysis of the Characteristics of Monsoon Onset over the Bay of Bengal and the South China Sea in 2010

作     者：DING Xuan-Ru WANG Dong-Xiao LI Wei-Biao GUAN Zhao-Yong 

作者机构：State Key Laboratory of Tropical Oceanorgraphy (LTO) South China Sea Institute of Oeeanology Chinese Academy of Sciences Guangzhou 510301 China School of Atmospheric Sciences Nanjing University of Information Science & Technology Nanjing 210044 China Department of Atmospheric Sciences Sun Yat-Sen University Guangzhou 510275 China 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2012年第5卷第4期

页      面：334-341页

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 070601[理学-气象学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the National Basic Research Program of China(973 Program,No. 2010CB950300) the National Natural Science Foundation of China(Nos.41149908 & 41049903) 

主　　题：monsoon onset Bay of Bengal monsoon South China Sea monsoon 

摘      要：Based on NCEP/NCAR daily reanalysis and the Tropical Rainfall Measuring Mission data, the back- ground atmospheric circulation and the characteristics of meteorological elements during the period of the Bay of Bengal monsoon （BOBM） and the South China Sea （SCS） monsoon （SCSM） in 2010 are studied. The impacts of the BOBM onset on the SCSM onset and the relationship between the two monsoons are also analyzed. The two main results are as follows： （l） The BOBM onset obvi- ously occurs earlier than the SCSM onset in 2010, which is a typical onset process of the Asian monsoon. During the BOBM＇s onset, northward jump, and eastward expansion, convective precipitation and southwest winds occurred over the SCS, which resulted in the onset of the SCSM. （2） The relationship among strong convection, heavy rainfall, and vertical circulation configuration is obtained during the monsoon onsets over the BOB and SCS, and it is concluded that the South Asian High plays an important role in this period.