发生在中国大陆的台风变性加强过程分析

朱佩君; 郑永光; 陶祖钰

发生在中国大陆的台风变性加强过程分析

北京大学物理学院大气科学系暴雨监测和预测国家重点实验室, 北京, 100871

基金项目: 国家重点基础研究项目(G1998040907);高等学校重点实验室访问学者基金资助

计量
- 文章访问数: 1354
- HTML全文浏览量: 0
- PDF下载量: 1505
- 被引次数: 0
出版历程
- 收稿日期: 2001-09-21
- 修回日期: 2002-02-22

ANALYSIS OF THE EXTRATROPICAL TRANSITION OF TROPICAL CYCLONE OVER MAINLAND OF CHINA

Key Laboratory of Severe Storm Research, Department of Atmosphere Science, Physics School, Peking University, Beijing 100871, China

摘要

摘要: 通过对登陆台风Winnie(1997)的演变过程分析,发现登陆后的台风经历三个阶段:衰减阶段、变性阶段、重新加强阶段。其变性过程类似于Sekioka等人提出的复合型,变性后逐渐演变为Shapiro-Keyser气旋模型。通过对物理量的诊断分析发现,对流层中高层冷空气的下沉入侵以及对流层低层的暖平流是热带气旋变性的原因。冷空气的入侵使具有暖心结构的热带气旋演变为斜压结构的温带气旋。变性后气旋得到了重新发展,低层维持的较明显暖平流以及与高空急流相对应的散度区和高空涡度平流是导致气旋重新发展的重要物理因子。
- 台风 /
- 温带转变 /
- 诊断分析
Abstract: Typhoon Winnie(1997) experienced three stages after its landfall on China:weakening,transformation,and re-intensification. The characteristic of transformation is similar to the "complex transition" model proposed by Matano and Sekioka. During the re-intensification stage,the transformed cyclone developed into a pattern of Shapiro-Keyser Cyclone model. From the diagnosis we can find that the cause of Winnie's transformation is the intrusion of cold air from the middle-upper troposphere and the warm temperature advection in the lower. Winnie redeveloped after transformation,which is the result of three vital factors:the warm temperature advection in the lower troposphere,the divergence located on the right side of the entry of upper jet and the cyclonic vorticity advection in the upper.
- typhoon /
- extratropical transition /
- diagnositic analysis

HTML全文

参考文献(14)

[1]	SEKIOKA M.Synoptic structure of typhoon marie passing over the Japan sea[J].J Meteor Soc Japan,1956,34:276-287.
[2]	SEKIOKA M.On the behaviour of cloud pattern as seen on satellite photographs in the transformation of a typhoon into an extratropical cyclone[J].J Meteor Soc Japan,1970,48:224-233.
[3]	MATANO H.On the synopitic structure of typhoon Cora 1969 as the compound system of tropical and extratropcial cyclone[J].J Meteor Soc Japan,1971,49:282-294.
[4]	BRAND S,GUARD C P.An observational study of extratropical storms evolved from tropical cyclones in the western North Pacific[J].J Meteor Soc Japan,1979,57:479-482.
[5]	KLEIN P M,HARR P A,ELSBERRY R L.Extratropical transition of Western North Pacific tropical cyclones:An overview and conceptual model of the transformation stage[J].Wea Forecasting,2000,15:373-395.
[6]	HARR P A,ELSBERRY R L.Extratropical transition of tropical cyclones over the Western North Pacific.Part Ⅰ:Evolution of structural characteristics during the transition process[J].Mon Wea Rev,2000,128:2613-2633.
[7]	HARR P A,ELSBERRY R L.Extratropical transition of tropical cyclones over the Western North Pacific.Part Ⅱ:The impact of midlatitude circulation characteristics[J].Mon Wea Rev,2000,128:2634-2653.
[8]	PALMEN E.Vertcal circulation and release of kinetic energy during the development of hurricane hazel into an extratropical storm[J].Tellus,1958,10:1-23.
[9]	DIMEGO G J,BOSART L F.The transformation of tropical storm agnes into an extratropical cyclone.Part I:The observed fields and vertical motion computations[J].Mon Wea Rev,1982,110:385-411.
[10]	DIMEGO G J,BOSART L F.The transformation of tropical storm.agnes into an extratropical cyclone.Part Ⅱ:Moisture,vorticity and kinetic energy budgets[J].Mon Wea Rev,1982,110:412-433.
[11]	BORAST L F,LACKMANN G M.Postlandfall tropical cyclone reintensifi-cation in a weakly baroclinic environment:A case study of hurricane David( September 1979)[J].Mon Wea Rev,1998,123:3268-3291.
[12]	谭锐志,梁必骐.登陆台风变性过程的诊断研究[J].大气科学,1990,14:422-431.
[13]	徐祥德,陈联寿,解以扬,等.环境场大尺度锋面系统与变性台风结构特征及其暴雨的形成[J].大气科学.1998,22:744-752.
[14]	孙建华,赵思雄.登陆台风引发的暴雨过程之诊断研究[J].大气科学,2000,24:223-237.