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气象:2005,31(5):32-36
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台风云娜陆上维持原因浅析
(1.国家气象中心,北京 100081;2.北京大学物理学院大气科学系)
Cause Analysis of Maintenance of Typhoon Rananim on Land
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中文摘要: 利用台风年鉴、日本气象厅最佳路径资料、T213分析资料、卫星云图和高空观测资料对台风云娜登陆后长时间维持不消之原因进行了天气和动力学诊断分析。结果表明低层水汽源源不断的输送、中纬度天气系统与云娜相互作用在其北侧低层建立偏东风急流和力管场,并且它始终处在高层强辐散流场东南侧或南侧的流出气流以及垂直切变小值区中是云娜在陆上维持的条件。
Abstract:By the use of typhoon annual report, best track of JMA, T213 analysis field, satellite image and aerological observation data, the cause of maintenance of Typhoon Rananim (0414) on land is analyzed from diagnostic analyses of synoptic and dynamic conditions. The results show that the water vapour transportation at low layer and the eastern jet and solenoid field generated by the interaction between middle-latitude synoptic system and Rananim are two main reasons of its maintenance on land. Meanwhile its location being under the outflow at the southeast or south direction of intensive divergent field at high layer as well as at low vertical shear regions during its maintenance on land are also two important conditions.
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引用文本:
许映龙,高拴柱,刘震坤,2005.台风云娜陆上维持原因浅析[J].气象,31(5):32-36.
,2005.Cause Analysis of Maintenance of Typhoon Rananim on Land[J].Meteor Mon,31(5):32-36.