2109号台风“卢碧”复杂路径与强降水成因分析  

Analysis of the causes of complex path and heavy rain of typhoon"LUPIT"(No.2109)

作　　者：林辉 程晶晶 庄毅斌 黄奕丹 陈锦鹏 洪晓湘 杨德南 LIN Hui;CHENG Jingjing;ZHUANG Yibin;HUANG Yidan;CHEN Jinpeng;HONG Xiaoxiang;YANG De′nan(Key Laboratory of Disaster Weather in Fujian Province,Fuzhou 350001,China;Open Laboratory of Straits Meteorology,Xiamen 361001,China;Zhangzhou Meteorological Service,Zhangzhou 363000,China)

机构地区：[1]福建省灾害天气重点实验室,福建福州350001 [2]海峡气象开放实验室,福建厦门361001 [3]漳州市气象局,福建漳州363005

出　　处：《气象与环境学报》2023年第5期1-8,共8页Journal of Meteorology and Environment

基　　金：中国气象局/广东省区域数值天气预报重点实验室开放基金课题(J202005);闽西南区域协同发展气象科技专项课题(2020MXN08);漳州市气象局研究型业务专项(2022y01);漳州市自然科学基金项目(ZZ2023J13)共同资助。

摘　　要：利用加密自动气象观测站资料、台风实况路径资料、NECP再分析资料、FY-4A卫星TBB资料综合分析了2109号台风“卢碧”复杂路径与强降水成因。结果表明:7月下旬副热带高压偏强以及华南沿海强盛的季风辐合带为台风在近海生成与发展提供了良好的能量和水汽条件;台风移动缓慢,海水上翻冷却作用加强,环境垂直风切变增大以及高层辐散条件趋弱导致台风“卢碧”无法近海快速加强;副热带高压脊线东退后快速南落、深层引导气流的变化和双台风的互旋作用使得“卢碧”走出了一条不同寻常的“S”路径;强盛的西南季风水汽输送,低空急流和台风倒槽的影响,以及台风本体结构的不对称性是造成漳州市强降水和落区分布不均匀的主要原因。Using the data of encrypted automatic meteorological observation station,typhoon real track data,NECP reanalysis data,and FY-4A satellite TBB data,the causes of the complex path and heavy rain of typhoon"LUPIT"(No.2109)were comprehensively analyzed.The results show that the strong subtropical high in late July and the strong monsoon convergence zone along the coast of South China provide good energy and water vapor conditions for the offshore generation and development of typhoons.The slow movement of the typhoon,the strengthening of the upturning cooling effect of the seawater,the increase of vertical wind shear in the environment,and the weakening of the divergence conditions in the upper level make it impossible for typhoon"LUPIT"to strengthen rapidly offshore.The subtropical high ridge line of tropical high-pressure retreats rapidly to the south,and the change of deep guiding airflow and the interaction of the two typhoons make"LUPIT"appear an unusual"S"path.Water vapor transported by the southwest monsoon,the strong influence of low-level jets,the typhoon′s inverted trough,and the asymmetry of the typhoon′s structure are the main reasons for the uneven distribution of heavy rain and falling areas in Zhangzhou.

关 键 词：热带风暴 复杂路径 双台风 引导气流 强降水 

分 类 号：P458.124[天文地球—大气科学及气象学]