Large-scale characteristics of landfalling tropical cyclones with abrupt intensity change

作     者：Qianqian JIU Feng XU Jianjun XU Mei LIANG Shifei TU Siqi CHEN 

作者机构：South China Sea Institute of Marine MeteorologyGuangdong Ocean UniversityZhanjiang 524088China College of Ocean and MeteorologyGuangdong Ocean UniversityZhanjiang 524088China Southern Marine Science and Engineering Guangdong LaboratoryZhanjiang 524088China 

出 版 物：《Frontiers of Earth Science》 (地球科学前沿（英文版）)

年 卷 期：2019年第13卷第4期

页      面：808-816页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0704[理学-天文学] 

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences the Fund of Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) the National Key R&D Program of China the Project of Enhancing School with Innovation of Guangdong Ocean University the Projects (Platforms) for Construction of Top-ranking Disciplines of Guangdong Ocean University the Young Innovative Talents Project in Common Colleges and Universities in Guangdong Province 

主　　题：landfalling tropical cyclone abrupt intensity change environmental factors dynamic composite analysis 

摘      要：Data from the China Meteorological Administration and ERA-Interim are used to examine the environmental characteristics of landfalling tropical cyclones(TCs)with abrupt intensity change.The results show that,of all 657 landfalling TCs during 1979-2017,71%,70%and 65%of all landfalling TDs,TSs and TYs,respectively,intensify.Of all the 16595 samples,4.0%and 0.2%of typhoons and tropical storms,respectively,experience over-water rapid intensification(RI)process during their life cycle.Meanwhile,4.5%and 0.6%of typhoons and tropial storms,respectively,undergo overwater rapid decay(RD).These two kinds of cases,i.e.,RI and RD,are used to analyze their associated large-scale conditions.Comparisons show that the RI cases are generally on the south side of the strong western Pacific subtropical high(WPSH);warm sea surface temperatures(SSTs)and sufficient water vapor fluxes existing in RI samples is a dominant feature that is conducive to the development of TCs.Also,the moderate low-level relative vorticity is favorable for TC intensification.On the contrary,the RD TCs are located on the west side of the WPSH;significant decreasing SSTs and low-level water vapor transport may synergistically contribute to RD.Simultaneously,low-level relative vorticity seems to be unfavorable for the development of TCs.