Interdecadal variation of tropical cyclone activity in association with summer monsoon,sea surface temperature over the western North Pacific  

作　　者：CHEN GuangHua 

机构地区：[1]Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100190, China

出　　处：《Chinese Science Bulletin》2009年第8期1417-1421,共5页

基　　金：Supported by Special Scientific Research Project for Public Interest (Grant No.GYHY200806009);National Basic Research Program of China (Grant No.2009CB421505)

摘　　要：Based on geographic division over the western North Pacific(WNP),the interdecadal relationships between summer monsoon,sea surface temperature(SST) and tropical cyclones activity(including number,track and intensity) are examined.In the past several decades,the western Pacific subtropical high(WPSH) and tropical westerlies contribute to the interdecadal variation of TC number in the northwest and southeast of WNP respectively.The increased TC occurrence density to the east of Philippines related to TC track appears during the 1990s,in terms of both steer flow induced by WPSH and genesis location.From the interdecadal viewpoint,the tendency of TC intensity,measured by averaged accumulated cyclone energy,does well agree with that of SST,implying that SST plays an important role in TC intensity.Based on geographic division over the western North Pacific （WNP）, the interdecadal relationships between summer monsoon, sea surface temperature （SST） and tropical cyclones activity （including number, track and intensity） are examined. In the past several decades, the western Pacific subtropical high （WPSH） and tropical westerlies contribute to the interdecadal variation of TC number in the northwest and southeast of WNP respectively. The increased TC occurrence density to the east of Philippines related to TC track appears during the 1990s, in terms of both steer flow induced by WPSH and genesis location. From the interdecadal viewpoint, the tendency of TC intensity, measured by averaged accumulated cyclone energy, does well agree with that of SST, implying that SST plays an important role in TC intensity.

关 键 词：热带气旋活动 西北太平洋 海面温度 西部 夏季风 西太平洋副热带高压 海洋表面温度 热电偶 

分 类 号：P46[天文地球—大气科学及气象学] P444