| OBSERVATIONAL ANALYSIS OF ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES “CHANCHU”
AND “PRAPIROON” MAKING LANDFALL ALONG THE SOUTH CHINA COAST |
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| 引用本文： | 袁金南,周 文,黄辉军,廖 菲.OBSERVATIONAL ANALYSIS OF ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES “CHANCHU”
AND “PRAPIROON” MAKING LANDFALL ALONG THE SOUTH CHINA COAST[J].热带气象学报(英文版),2010,16(2):171-180. |
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| 作者姓名： | 袁金南 周 文 黄辉军 廖 菲 |
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| 作者单位： | YUAN Jin-nan,HUANG Hui-jun,LIAO Fei(Guangzhon Institute of Tropical and Marine Meteorology, CMA, Guangzhon 510080 China);ZHOU Wen(Laboratory for Atmospheric Research, Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China) |
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| 基金项目： | National Basic Research Program of China (973 program)，National Natural Science Foundation of China，City University of Hong Kong，Natural Science Foundation of Guangdong Province of China |
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| 摘 要： | Observational data of mesoscale surface weather stations and weather radars of Guangdong
province are employed to analyze the asymmetric distribution of convection prior to, during and after
landfall for tropical cyclones of Chanchu and Prapiroon making landfall on the south China coast in 2006.
The results showed that strong convection is located in the eastern and northern sectors of the landfalling
Chanchu and Prapiroon, namely in the front and right portions of the TC tracks, for a period of time
starting from 12 h prior to landfall to 6 h after it. Their convection also had distinct differences in the
vertical direction. The analysis indicated that although the landfall of Chanchu and Prapiroon has the same
asymmetric distribution of convection, the causes are not exactly the same. The asymmetric distribution of
convection in the case of Chanchu is mainly correlated with the impacts of a strong environmental vertical
wind shear, low-level horizontal wind shear, and low-level convergence and divergence. In the case of
Prapiroon, however, the asymmetric distribution of convection is mainly associated with the impacts of
low-level convergence and divergence.
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OBSERVATIONAL ANALYSIS OF ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES CHANCHU AND PRAPIROON MAKING LANDFALL ALONG THE SOUTH CHINA COAST |
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| YUAN Jin-nan,ZHOU Wen,HUANG Hui-jun and LIAO Fei.OBSERVATIONAL ANALYSIS OF ASYMMETRIC DISTRIBUTION OF CONVECTION ASSOCIATED WITH TROPICAL CYCLONES CHANCHU AND PRAPIROON MAKING LANDFALL ALONG THE SOUTH CHINA COAST[J].Journal of Tropical Meteorology,2010,16(2):171-180. |
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| Authors: | YUAN Jin-nan ZHOU Wen HUANG Hui-jun and LIAO Fei |
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| Institution: | 1. Guangzhon Institute of Tropical and Marine Meteorology, CMA, Guangzhon 510080 China
2. Laboratory for Atmospheric Research, Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China |
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| Abstract: | Observational data of mesoscale surface weather stations and weather radars of Guangdong province are employed to analyze the asymmetric distribution of convection prior to, during and after landfall for tropical cyclones of Chanchu and Prapiroon making landfall on the south China coast in 2006.The results showed that strong convection is located in the eastern and northern sectors of the landfalling Chanchu and Prapiroon, namely in the front and right portions of the TC tracks, for a period of time starting from 12 h prior to landfall to 6 h after it. Their convection also had distinct differences in the vertical direction. The analysis indicated that although the landfall of Chanchu and Prapiroon has the same asymmetric distribution of convection, the causes are not exactly the same. The asymmetric distribution of convection in the case of Chanchu is mainly correlated with the impacts of a strong environmental vertical wind shear, low-level horizontal wind shear, and low-level convergence and divergence. In the case of Prapiroon, however, the asymmetric distribution of convection is mainly associated with the impacts of low-level convergence and divergence. |
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| Keywords: | asymmetric distribution of convection tropical cyclones Chanchu and Prapiroon observation alanalysis |
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