| STRUCTURAL FEATURES OF THE MEIYU FRONT SYSTEM |
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| 作者姓名： | 高守亭 周玉淑 雷霆 |
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| 作者单位： | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029，State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry，Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029，State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry，Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029 |
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| 基金项目： | This work was jointly supported by the project on the study of the formative mechanism and predictive theory of the significant weather disaster in China under Grant G 1998040907,and supported by the project of Chinese Academy of Sciences under Grant KZC |
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| 摘 要： | A new subtropical front near the periphery of the West Pacific subtropical anticyclone isfound,which is never revealed in previous studies.The coupling of the subtropical front andMeiyu front forms a Meiyu front system (MFS) and is the most direct synoptic system for theMeiyu precipitation along the Mid-lower Reaches of Yangtze River (MRYR) in China.In thispaper.The detailed structural features and cloud features of the MFS in 1998 and 1999 areanalyzed,which manifests that the MFS is an objective phenomenon over the period of Meiyu alongMRYR and the Southwest Japan.Generally.the subtropical front is mainly located between 850hPa and 500 hPa.The moist southwest monsoon is transported in the passageway between theMeiyu front and the subtropical front.The vertical motion ascends in the passageway and descendson both sides of the MFS.forming the MFS's secondary circulation.A lower TBB band indicatedthat obvious convective activities are also located in the passageway of MFS.The horizontal windof MFS is vertically asymmetric.
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STRUCTURAL FEATURES OF THE MEIYU FRONT SYSTEM |
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| GAO Shouting ZHOU Yushu LEI Ting State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry.STRUCTURAL FEATURES OF THE MEIYU FRONT SYSTEM[J].Acta Meteorologica Sinica,2002(2). |
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| Authors: | GAO Shouting ZHOU Yushu LEI Ting State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry |
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| Institution: | GAO Shouting ZHOU Yushu LEI Ting State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029 |
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| Abstract: | A new subtropical front near the periphery of the West Pacific subtropical anticyclone is found,which is never revealed in previous studies.The coupling of the subtropical front and Meiyu front forms a Meiyu front system (MFS) and is the most direct synoptic system for the Meiyu precipitation along the Mid-lower Reaches of Yangtze River (MRYR) in China.In this paper.The detailed structural features and cloud features of the MFS in 1998 and 1999 are analyzed,which manifests that the MFS is an objective phenomenon over the period of Meiyu along MRYR and the Southwest Japan.Generally.the subtropical front is mainly located between 850 hPa and 500 hPa.The moist southwest monsoon is transported in the passageway between the Meiyu front and the subtropical front.The vertical motion ascends in the passageway and descends on both sides of the MFS.forming the MFS's secondary circulation.A lower TBB band indicated that obvious convective activities are also located in the passageway of MFS.The horizontal wind of MFS is vertically asymmetric. |
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| Keywords: | Meiyu front subtropical front Meiyu front system(MFS) structural features |
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