热带气象学报2023，Vol.39Issue(5)：774-784,11.DOI:10.16032/j.issn.1004-4965.2023.067
台风"山竹"降水非对称特征及其与环境流场的相互作用研究
ON THE ASYMMETRIC CHARACTERISTICS OF TYPHOON "MANGKHUT" PRECIPITATION AND ITS INTERACTION WITH ENVIRONMENTAL FLOW FIELD
摘要
Abstract
Based on satellite-observed precipitation data and reanalysis data,this paper identifies the asymmetric characteristics of Typhoon"Mangkhut"precipitation and its correlation with vertical wind shear,and further uses WRF for numerical simulation to explore the feedback effect of asymmetric precipitation induced internal dynamic process on environmental flow.The main conclusions are as follows:(1)The precipitation distribution of Typhoon"Mangkhut"shows obvious asymmetry.It is mainly concentrated in the south,while the average wind shear of the typhoon points to the southwest,and the precipitation is always on the left side of the downshear.(2)At the initial stage of typhoon development,the wind shear points to the direction of heavy precipitation,rotates counterclockwise and increases continuously.It reaches the maximum when turning to the south,and then decreases gradually.(3)The change of asymmetric precipitation location is accompanied by the change of asymmetric wind field,and it affects the change of asymmetric temperature and pressure field;the change of temperature and pressure field further changes the asymmetric wind and precipitation.Therefore,there is an interactive feedback between Typhoon"Mangkhut"and the environmental flow field.关键词
热带气旋/垂直风切变/非对称降水/数值模拟/环境流场Key words
tropical cyclone/vertical wind shear/asymmetric precipitation/numerical simulation/environmental flow field分类
天文与地球科学引用本文复制引用
唐一宁,冶磊,李煜斌,高志球..台风"山竹"降水非对称特征及其与环境流场的相互作用研究[J].热带气象学报,2023,39(5):774-784,11.基金项目
国家自然科学基金项目(42075072)资助 （42075072）
