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| An Observational Study of Typhoon Imbudo in 2003 | |
| 作者姓名： | LI Qingqing FU Gang GUO Jingtian YANG Yuqiang DUAN Yihong |
| 作者单位： | [1]Physical Oceanography Lab, Department of Marine Meteorology, Ocean University of China, Qingdao 266003, P. R. China [2]Qingdao Weather Bureau, Qingdao 266003, P. R. China [3]Shanghai Typhoon Institute, Shanghai 200030, P.R. China |
| 基金项目： | This work was partly supported by the National Nature Science Foundation of China under the grant numbers of 40275033 and 40240420564, and the open project of the Shanghai Typhoon Institute. |
| 摘 要： | Typhoon Imbudo was a super-typhoon over the northwestern Pacific in 2003. It caused tremendous damage when it made landfalls in the Philippines and China. This paper documents observational analyses of Typhoon Imbudo during its landfall in China. All available observations are used to study its motion, intensity changes, convection, structure and precipitation. Best-track data indicate that Imbudo moved west-northwestward until 1800 UTC 23 July and then turned northwestward. FNL （final） analysis data show that the motion of Imbudo is dominated by changes of the subtropical high. At Imbudo＇s mature stage, the minimum sea level pressure dropped to 910 hPa and the maximum sustained winds were as high as 67 m s^-1, which is the intensity of a super-typhoon. The surface wind field exhibited asymmetric characteristics. Polar-orbiting satellite imagery also manifested convective asymmetry before Imbudo made landfall in China. Analyzed the vertical wind shear, it is shown that the convection has a downshear-left pattern. All kinds of precipitation data were used to identify the asymmetric characteristic of the rainfall associated with the Imbudo. The maximum rainfalls were located in the southern boundary area between Guangxi and Guangdong. However, the lack of in situ observations limited further analyses of this typhoon. |
| 关 键 词： | 台风 海洋气象学 表面风 卫星云图 降雨量 热带气象 |
| 文章编号： | 1672-5182（2005）04-391-07 |
| 收稿时间： | 2005-06-28 |
| 修稿时间： | 2005-08-25 |
An observational study of typhoon Imbudo in 2003 |
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| LI Qingqing FU Gang GUO Jingtian YANG Yuqiang DUAN Yihong.An Observational Study of Typhoon Imbudo in 2003[J].Journal of Ocean University of China,2005,4(4):391-397. | |
| Authors: | Li Qingqing Fu Gang Guo Jingtian Yang Yuqiang Duan Yihong |
| Institution: | 1. Physical Oceanography Lab, Department of Marine Meteorology, Ocean University of China, Qingdao 266003, P.R. China 2. Qingdao Weather Bureau, Qingdao 266003, P. R. China 3. Shanghai Typhoon Institute, Shanghai 200030, P.R. China |
| Abstract: | Typhoon Imbudo was a super-typhoon over the northwestern Pacific in 2003. It caused tremendous damage when it made landfalls in the Philippines and China. This paper documents observational analyses of Typhoon Imbudo during its landfall in China. All available observations are used to study its motion, intensity changes, convection, structure and precipitation. Best-track data indicate that Imbudo moved west-northwestward until 1800 UTC 23 July and then turned northwestward. FNL (final) analysis data show that the motion of Imbudo is dominated by changes of the subtropical high. At Imbudo's mature stage, the minimum sea level pressure dropped to 910 hPa and the maximum sustained winds were as high as 67 ms-1, which is the intensity of a super-typhoon. The surface wind field exhibited asymmetric characteristics. Polar-orbiting satellite imagery also manifested convective asymmetry before Imbudo made landfall in China. Analyzed the vertical wind shear, it is shown that the convection has a downshear-left pattern. All kinds of precipitation data were used to identify the asymmetric characteristic of the rainfall associated with the Imbudo. The maximum rainfalls were located in the southern boundary area between Guangxi and Guangdong. However, the lack of in situ observations limited further analyses of this typhoon. |
| Keywords: | Typhoon Imbudo surface winds satellite imagery asymmetric convection downshear-left convective pattern asymmetric rainfall |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ | |