台风“威马逊”近海加强及引发广西异常暴雨分析  

"Rammasun"Intensification in Near Sea and Induced Abnormal Rainstorm in Guangxi

作　　者：高安宁 李菁 陈见 祁丽燕 

机构地区：[1]广西壮族自治区气象台,南宁530022

出　　处：《气象科技》2016年第4期653-658,668,共7页Meteorological Science and Technology

基　　金：广西自然科学基金(2013GXNSFAA019280);广西科技攻关项目(桂科攻1355010-8)资助

摘　　要：利用MICAPS常规资料、中尺度自动站资料以及NCEP、ECMWF等数值预报产品资料,采用天气学诊断分析方法,对1409号超强台风"威马逊"近海加强、造成广西异常暴雨的成因进行分析。结果表明:1"威马逊"经过的海域温度异常偏高,西南季风急流增强,以及垂直风切变小,有利于"威马逊"近海加强;2"威马逊"与季风急流在海南文昌近海相遇,促使台风中心附近潜热能持续增大,暖心结构更趋于完整,是"威马逊"强度突然加强的重要原因;3充沛的水汽输送和水汽辐合、强烈的上升运动是造成"威马逊"异常暴雨的重要原因。Using the MICAPS routine data,mesoscale automatic station data and the products of ECMWF and NCEP numerical forecasts,by means of the weather diagnosis analysis method,the causes of the super typhoon＂Rammasun ＂intensification in the near sea and its leading severe weather disaster in Guangxi are analyzed.The results show：（1）the＂Rammasun＂ intensification in the near sea is related to the following factors：the anomaly higher sea temperature in the area where it passed,the strengthened southwest monsoon jet,and the small vertical wind shear;（2）Rammasun met the monsoon jet near the offshore of Wenchang in Hainan,which made the latent heat enlarged near the typhoon and the warm heart structure of the typhoon became completed,which is an important reason for Rammasun intensification;（3）the abundant water vapor transport and convergence and strong ascending motion were the important reasons for the abnormal rainstorm.

关 键 词：台风“威马逊” 近海加强 异常暴雨 

分 类 号：P458.121.1[天文地球—大气科学及气象学]