影响黄渤海区域两次北上台风的对比分析  

Comparative analysis of two northward typhoons affecting the Bohai and Yellow sea areas

作　　者：孙密娜[1] 杨洋 姜皓严 SUN Mi-na;YANG Yang;JIANG Hao-yan(Tianjin Meteorological Bureau, Tianjin 300074 China)

机构地区：[1]天津市气象局,天津300074

出　　处：《海洋预报》2018年第5期74-84,共11页Marine Forecasts

基　　金：天津市应用基础与前沿技术研究计划(15JCQNJC07600);中国气象局预报员专项(CMAYB2018-005);天津市局课题(201814ybxm08)

摘　　要：利用热带气旋路径数据集资料、NCEP逐6 h再分析资料和FY卫星TBB资料,统计显示:1985—2014年北上到渤海和黄海北部的台风一共34个,其中8月最多,有三分之一已经变性成温带气旋。两次北上影响黄渤海的台风过程(1410号"麦德姆"和0713号"韦帕")的对比分析显示:两者北上时与中纬度的高空槽云系结合,锋生显著,降水范围增大。台风"韦帕"登陆后与高空槽云系结合的纬度更低,强度减弱速度更快,降水和对流云带主要分布在其中心的北侧,而台风"麦德姆"则主要分布在其中心的西南侧。台风登陆后垂直速度和水汽通量散度出现不对称结构,并与降水区域一致。视热源和视水汽汇诊断显示:台风"韦帕"遭遇的冷空气强度更强,由西侧的中高层开始快速向下入侵;台风"麦德姆"则由低层开始由西侧和东侧同时入侵。Based on the tropical cyclone path data, FY TBB (Temperature of Black Body) data and NCEP (National Centers for Environment Prediction)6 hourly reanalysis data, there are 34 typhoons moving up to 37oN from 1985 to 2014 statistically, with a highest numbers in August, and one of third has turned into extratropical cyclone. The comparison between typhoon“Matom”and typhoon“Wipha”affecting the Yellow and Bohai Sea indicates that they are in combination with upper trough clouds under the northward move, with significant front genesis and precipitation. The precipitation of typhoon“Matom”is mainly located at the southwest of the center, while the other is located at the north of the center. After typhoon landing, vertical velocity and vapor flux divergence appears asymmetric structure, and is consistent with the precipitation area. By diagnosing the heat source and apparent moisture sinks, it shows that the cold air of typhoon“Wipha”is stronger. The invasion is from the west and downwards swiftly. The invasion of typhoon“Matom”starts at the same time by the west and the east from low levels.

关 键 词：北上台风 等熵面 高空槽 降水 

分 类 号：P444[天文地球—大气科学及气象学]