| ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES MAKING LANDFALL ON THE EAST CHINA COAST |
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| 作者姓名： | 朱佩君 郑永光 郑沛群 |
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| 作者单位： | Department of Earth Sciences, Zhejiang University, Hangzhou 310027 China;National Meteorological Center, Beijing 100081 China;Zhejiang Province Meteorological Bureau, Hangzhou 310017 China |
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| 基金项目： | Natural Science Foundation of China (40805018); Foundation of Natural Science for Zhejiang Province(Y506236); Project 973 (2004CB418300) |
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| 摘 要： | The asymmetric distribution of convection associated with tropical cyclones making landfall on the east China coast is studied with black-body temperature (TBB) data from Fengyun-2 (FY-2) geostationary weather satellite. The convection in various quadrants of the TCs is examined for the period of -24 to 6 h relative to landfall. The convection to the southern side of the TCs was much more intense than that to the northern side during the whole landfall period. The convection to the western side of the TCs was stronger than that to the eastern side for the time -8 h before and at the landfall. After landfall, the situation reverses. The asymmetric convection of the TCs was partly due to the vertical wind shear and storm motion, and partly because the process of landfall restrained the convection in relevant quadrants. Besides, the orographic uplift along the east of China was favorable to the enhancement of convection in the eastern side of the TCs. From the characteristics of convective asymmetry of the TCs landing on the south and east of China, it is known that their main difference might be the included angle between the TC path and the coastline as well as the terrain along the coast.
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| 关 键 词： | landing typhoons asymmetric convection TBB east of China |
| 收稿时间： | 2010/12/25 0:00:00 |
| 修稿时间： | 2012/7/20 0:00:00 |
ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES MAKING LANDFALL ON THE EAST CHINA COAST |
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| ZHU Pei-jun,ZHENG Yong-guang and ZHENG Pei-qun.ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES MAKING LANDFALL ON THE EAST CHINA COAST[J].Journal of Tropical Meteorology,2012,18(4):436-444. |
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| Authors: | ZHU Pei-jun ZHENG Yong-guang and ZHENG Pei-qun |
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| Affiliation: | Department of Earth Sciences, Zhejiang University, Hangzhou 310027 China;National Meteorological Center, Beijing 100081 China;Zhejiang Province Meteorological Bureau, Hangzhou 310017 China |
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| Abstract: | The asymmetric distribution of convection associated with tropical cyclones making landfall on the east China coast is studied with black-body temperature (TBB) data from Fengyun-2 (FY-2) geostationary weather satellite. The convection in various quadrants of the TCs is examined for the period of -24 to 6 h relative to landfall. The convection to the southern side of the TCs was much more intense than that to the northern side during the whole landfall period. The convection to the western side of the TCs was stronger than that to the eastern side for the time -8 h before and at the landfall. After landfall, the situation reverses. The asymmetric convection of the TCs was partly due to the vertical wind shear and storm motion, and partly because the process of landfall restrained the convection in relevant quadrants. Besides, the orographic uplift along the east of China was favorable to the enhancement of convection in the eastern side of the TCs. From the characteristics of convective asymmetry of the TCs landing on the south and east of China, it is known that their main difference might be the included angle between the TC path and the coastline as well as the terrain along the coast. |
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| Keywords: | landing typhoons asymmetric convection TBB east of China |
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