201002号台风“康森”移动路径特点的分析

Characteristics of 1002 Typhoon "Conson" Mobile Path

通过对台风"康森"路径特点和影响因素的分析,特别是影响台风移动的诸多因子及其对"康森"西行北折路径所起的作用分析,发现:东亚中高纬度贝加尔湖一带为有阻塞高压的长波脊,副热带高压呈带状形势,强度强,稳定,西伸脊点偏西是"康森"稳定西偏北行的主要原因;而大尺度环境场的调整如加尔湖阻塞高压减弱、崩溃,高空槽东移加深,副高减弱东退南落,是"康森"西行北折的主要原因。同时台风中心及附近850hPa涡度场、700hPa风场的分布,对流云的发生发展也影响"康森"的移动路径。

Basing the analysis of the mobile path and influencing factors of Typhoon＂Conson＂,especially focusing on those contributing to the abnormal turn north from its original west path.The results show that the long wave ridge of a blocking high pressure along Lake Baikal in the high latitudes of East Asia,and the strong,stable Subtropical High with its ridge end west make＂Conson＂stably north west moving.The adjustment of large scale environmental field,such as Lake Baikal blocking high weakening,collapsing,upper trough deepening,Subtropical High weakening southeast make＂Conson＂turn to the north.At the same time,the vorticity near the typhoon center and of the 850hPa,700hPa wind field distribution,the development of convective clouds also affect＂Conson＂mobile path.