| Application of Direct Assimilation of ATOVS Microwave Radiances to Typhoon Track Prediction |
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| 作者姓名： | ZHANG Hu XUE Jishan ZHU Guofu ZHUANG Shiyu WU Xuebao ZHANG Fengying |
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| 作者单位： | [1]AtmosphericScienceDepartment,LanzhouUniversity,Lanzhou730000 [2]ChineseAcademyofMeteorologicalSciences,ChinaMeteorologicalAdminstration,Beijing100081 [3]NationalSatelliteMeteorologicalCenter,ChinaMeteorologicalAdminstration,Beijing100081 |
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| 摘 要： | In order to solve the difficult problem of typhoon track prediction due to the sparsity of conventionaldata over the tropical ocean, in this paper, the No. 0205 typhoon Rammasun of 4-6 July 2002 is studiedand an experiment of the typhoon track prediction is made with the direct use of the Advanced TIROS-NOperational Vertical Sounder (ATOVS) microwave radiance data in three-dimensional variational dataassimilation. The prediction result shows that the experiment with the ATOVS microwave radiance datacan not only successfully predict the observed fact that typhoon Rammasun moves northward and turnsright, but can also simulate the action of the fast movement of the typhoon, which cannot be simulated withonly conventional radiosonde data. The skill of the typhoon track prediction with the ATOVS microwaveradiance data is much better than that without the ATOVS data. The typhoon track prediction of theformer scheme is consistent in time and in location with the observation. The direct assimilation of ATOVSmicrowave radiance data is an available way to solve the problem of the sparse observation data over thetropical ocean, and has great potential in being applied to typhoon track prediction.
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| 关 键 词： | 台风 预报 常规数据 热带海洋气候 |
Application of direct assimilation of ATOVS microwave radiances to typhoon track prediction |
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| ZHANG Hu,XUE Jishan,ZHU Guofu,ZHUANG Shiyu,WU Xuebao,ZHANG Fengying.Application of Direct Assimilation of ATOVS Microwave Radiances to Typhoon Track Prediction[J].Advances in Atmospheric Sciences,2004,21(2):283-290. |
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| Authors: | ZHANG Hua XUE Jishan ZHU Guofu ZHUANG Shiyu WU Xuebao ZHANG Fengying |
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| Institution: | Atmospheric Science Department,Lanzhou University, Lanzhou 730000;Chinese Academy of Meteorological Sciences,China Meteorological Adminstration,Beijing 100081,Chinese Academy of Meteorological Sciences,China Meteorological Adminstration,Beijing 100081,Chinese Academy of Meteorological Sciences,China Meteorological Adminstration,Beijing 100081,Chinese Academy of Meteorological Sciences,China Meteorological Adminstration,Beijing 100081,National Satellite Meteorological Center,China Meteorological Adminstration,Beijing 100081,National Satellite Meteorological Center,China Meteorological Adminstration,Beijing 100081 |
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| Abstract: | In order to solve the difficult problem of typhoon track prediction due to the sparsity of conventional data over the tropical ocean, in this paper, the No. 0205 typhoon Rammasun of 4-6 July 2002 is studied and an experiment of the typhoon track prediction is made with the direct use of the Advanced TIROS-N Operational Vertical Sounder (ATOVS) microwave radiance data in three-dimensional variational data assimilation. The prediction result shows that the experiment with the ATOVS microwave radiance data can not only successfully predict the observed fact that typhoon Rammasun moves northward and turns right, but can also simulate the action of the fast movement of the typhoon, which cannot be simulated with only conventional radiosonde data. The skill of the typhoon track prediction with the ATOVS microwave radiance data is much better than that without the ATOVS data. The typhoon track prediction of the former scheme is consistent in time and in location with the observation. The direct assimilation of ATOVS microwave radiance data is an available way to solve the problem of the sparse observation data over the tropical ocean, and has great potential in being applied to typhoon track prediction. |
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| Keywords: | radiance direct assimilation typhoon track prediction |
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