The Relationship Between Decadal Variability of Tropical Cyclone And Intraseasonal Oscillation Over South China Sea In the Past 40 Years
作者单位：College of Meteorology and OceanographyPLA University of Science and Technology ICGCRSchool of Atmospheric SciencesNanjing University
会议名称：《创新驱动发展 提高气象灾害防御能力——第30届中国气象学会年会》
会议日期：2013年
学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学]
基 金：sponsored by National Key Basic Research Program of China(2013CB956203) the R&D Special Fund for Public Welfare Industry(Meteorology)(GYHY201306025) National Natural Science Foundation of China(41175090)
关 键 词：tropical cyclone South China Sea decadal variability intraseasonal oscillation
摘 要：This study focuses on the decadal variability of tropical cyclone (TC) activity over the South China Sea (SCS) since the 1970s and its possible *** is found that TC activity over the SCS experienced a significant decadal variation around *** to the period from the 1970s to mid-1990s,the number of TC formed in the SCS obviously increased from mid-1990s through the *** particular,this change of TC genesis is closely related to the decadal variation of summer monsoon intraseasonal oscillation (ISO) over the *** increased TC frequency after mid-1990s is attributed to the enhanced convection during the active phase of SCS monsoon ***,the activities of TCs before mid-1990s are mostly confined within the SCS ***,more TCs generated over the SCS move northeastward since mid-1990s,and finally enter the East China *** southwesterly anomaly over the northern SCS is found since mid-1990s,which is responsible for the northeastward movement of TCs.