摘要
利用常规气象资料、加密气象站观测资料、NCEP／NCAR1°×1°的再分析资料，诊断分析了1308号热带风暴“西马仑”的移动路径以及登陆福建后造成福建南部的强暴雨过程。结果表明：700hPa引导气流和涡度场对热带风暴“西马仑”路径突然北折有很好的指示作用；此次暴雨过程与“西马仑”登陆前福建省南部存在一定的不稳定能量以及“西马仑”登陆后在暴雨区东侧出现的低空南风急流密切相关。
Abstract：Diagnostic analysis on track of tropical storm ＂CIMARON＂ and its torrential rain at southern Fujian is performed by using conventional observational data, automatic weather station dada and NCEP/ NCAR reanalysis data （1°×1°）. Results show that （1） steering flow and vorticity fields on 700 hPa indicate the typhoon deflecting northward suddenly, （2） the torrential rain event is closely related to unstable energy area preexisted at southern Fujian and low-level southern jet flow which appears on the east side of rainstorm area after landfall of ＂CIMARON＂.
关键词
热带风暴
路径
暴雨
急流
Tropical storm, track, torrential rain, Jet flow
