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| FEATURES OF WATER VAPOR TRANSPORT OF TYPHOON DAN (9914) | |
| 作者姓名： | 邓国 周玉淑 于占江 |
| 作者单位： | National Meteorological Center |
| 基金项目： | Natural Science Foundation of China (40505009; 40405007); Research on the key techniques of Beijing 2008 Olympics Forecast Demonstration Project of the World Weather Research Project(2003BA904B09), Project of Major Directional Project for Knowledge Innova |
| 摘 要： | The 2.5。×2.52。 gridded ECMWF reanalysis data are used to diagnose the genesis, development and dissipation of typhoon Dan by calculated stream function, velocity potential and vapor budget. It is shown in the result that when typhoon Dan moved westwards, water vapor mainly came from the eastern and western
boundaries, with most of it was transferred by the easterly flow south of the western North Pacific subtropical
high; after Dan swerved northwards, water vapor mainly came from western boundary of the typhoon, and the
vapor came from the South China Sea and the Indian Ocean. The transfer of water vapor was mainly
concentrated on the mid-lower troposphere, especially the level of 925hPa, at which the most intensive transfer
belt was located. During the different period of typhoon Dan, there was great water vapor change as indicated by
stream function, velocity potential and vapor budget, which suggest the importance of water vapor in the
development of typhoon Dan. |
| 关 键 词： | typhoons water vapor transport |
FEATURES OF WATER VAPOR TRANSPORT OF TYPHOON DAN (9914) |
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| DENG Guo,ZHOU Yu-shu and YU Zhan-jiang.FEATURES OF WATER VAPOR TRANSPORT OF TYPHOON DAN (9914)[J].Journal of Tropical Meteorology,2006,12(1):46-54. | |
| Authors: | DENG Guo ZHOU Yu-shu and YU Zhan-jiang |
| Institution: | 1. National Meteorological Center, Beijing 100081 China 2. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 China 3. Chengde Meteorological Bureau, Chengde 067000 China |
| Abstract: | The 2.5°×2.5°gridded ECMWF reanalysis data are used to diagnose the genesis, development and dissipation of typhoon Dan by calculated stream function, velocity potential and vapor budget. It is shown in the result that when typhoon Dan moved westwards, water vapor mainly came from the eastern and western boundaries, with most of it was transferred by the easterly flow south of the western North Pacific subtropical high; after Dan swerved northwards, water vapor mainly came from western boundary of the typhoon, and the vapor came from the South China Sea and the Indian Ocean. The transfer of water vapor was mainly concentrated on the mid-lower troposphere, especially the level of 925hPa, at which the most intensive transfer belt was located. During the different period of typhoon Dan, there was great water vapor change as indicated by stream function, velocity potential and vapor budget, which suggest the importance of water vapor in the development of typhoon Dan. |
| Keywords: | typhoons water vapor transport |
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