环境流场和“派比安”结构变化对其异常北抬路径影响的诊断分析  

Diagnosis of Northward-Deflecting Track of Typhoon Prapiroon Caused by the Environmental Flow Field and Typhoon Structure Variation

作　　者：吴乃庚[1] 林良勋[1] 李天然[1] 黄忠[1] 陈理森 

机构地区：[1]广州中心气象台,510080 [2]广东省湛江市气象台

出　　处：《气象》2007年第11期9-15,I0001,共8页Meteorological Monthly

基　　金：国家自然科学基金项目(编号:40575021);广东省科技计划重点引导项目(编号:2005B32601008)共同资助

摘　　要：利用NCEP的全球数据同化系统(GDAS)1°×1°分析资料、CIMSS微波亮温资料等,对0606号台风派比安的异常移动路径特征作了诊断分析。结果表明:"派比安"出现的两次异常北抬路径与中纬度西风槽活动、热带西南季风、副热带高压以及热带气旋结构影响密切相关,西风槽槽后经向风活动和台风最大风速中心轴向对台风未来移向有一定的指示意义。The anomalous moving track of Typhoon Prapiroon is studied by using the NCEP Global Data Assimilation System （GDAS） data and CIMSS microwave brightness temperature data. The results show that the northward- deflecting track of Prapiroon is closely related to the midlatitude westerly trough, southwest monsoon and typhoon asymmetric structure itself. The meridional wind activities behind the westerly trough and the directiron of maximum wind speed center have a certain indication meaning for the moving direction of typhoon.

关 键 词：台风 路径 西风槽 西南季风 非对称结构 

分 类 号：P642.14[天文地球—工程地质学]