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| Assimilation analysis of Rammasun typhoon structure over Northwest Pacific using satellite data | |
| 引用本文： | ZHANGHua CHOUJifan QIUChongjian. Assimilation analysis of Rammasun typhoon structure over Northwest Pacific using satellite data[J]. 科学通报(英文版), 2004, 49(4): 389-395. DOI: 10.1007/BF02900323 |
| 作者姓名： | ZHANGHua CHOUJifan QIUChongjian |
| 作者单位： | [1]DepartmentofAtmosphericScience,LanzhouUniversity,Lanzhou730000,China [2]TrainingCenter／CMA,Beijing100081,China |
| 摘 要： | The kinetic and thermodynamic structure of typhoon Rammasun (No. 0205) over the Northwest Pacific has been analyzed, using NOAA-16 polar orbiting Advanced Microwave Sounding Unit (AMSU) data collected on 2 July, 2002. The three-dimensional variational (3DVAR) assimilation technology is used to assimilate the satellite observation. The results show that the characteristics of the 3D typhoon structure can be more reasonably described from the assimilated data. The warm-cored structure of the typhoon is enhanced in the analyzed field, which corresponds to strong typhoon. The typhoon cyclonic circulation in the middle and lower layers is apparently strengthened, and the strong anticyclonic circulation appears at the top of the typhoon. The water vapor and its supply in the typhoon are enhanced. The microwave assimilation data may be used to supply the lack of the conventional observation data over the tropical ocean. |
| 关 键 词： | 台风 同化分析 微波探测器 热力学 动力学 |
| 收稿时间： | 2003-11-05 |
| 修稿时间： | 2003-12-30 |
Assimilation analysis of Rammasun typhoon structure over Northwest Pacific using satellite data |
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| Zhang,Hua,Chou,Jifan,Qiu,Chongjian. Assimilation analysis of Rammasun typhoon structure over Northwest Pacific using satellite data[J]. Chinese science bulletin, 2004, 49(4): 389-395. DOI: 10.1007/BF02900323 | |
| Authors: | Zhang Hua Chou Jifan Qiu Chongjian |
| Affiliation: | (1) Department of Atmospheric Science, Lanzhou University, 730000 Lanzhou, China;(2) Chinese Academy of Meteorological Sciences/CMA, 100081 Beijing, China;(3) Training Center/CMA, 100081 Beijing, China |
| Abstract: | The kinetic and thermodynamic structure of typhoon Rammasun (No. 0205) over the Northwest Pacific has been analyzed, using NOAA-16 polar orbiting Advanced Microwave Sounding Unit (AMSU) data collected on 2 July, 2002. The three-dimensional variational (3DVAR) assimila-tion technology is used to assimilate the satellite observation. The results show that the characteristics of the 3D typhoon structure can be more reasonably described from the assimi-lated data. The warm-cored structure of the typhoon is en-hanced in the analyzed field, which corresponds to strong typhoon. The typhoon cyclonic circulation in the middle and lower layers is apparently strengthened, and the strong anti-cyclonic circulation appears at the top of the typhoon. The water vapor and its supply in the typhoon are enhanced. The microwave assimilation data may be used to supply the lack of the conventional observation data over the tropical ocean. |
| Keywords: | typhoon structure satellite microwave data variational assimilation. |
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