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Abstract:
With the use of analyzed TCM-90 data,Typhoon Dot(1990)and complex evolutions are successfullyreproduced in numerical sboulation as it travels over the island of Taiwan. The simulation includes theformation of secondary highs in both circulation and geopotential fields, trajectory jumps during mergence with main centers, anomalous northward movement of a low center west of Taiwan, evolutionalprocess of a low-level jet over the Taiwan Straits and significant deviations of circulation center fromgeopotentia1 center between upper and lower levels. By examining ev0lutions of 3-h interval simulatedresults, detailed processes of changes in structure and track before and after Dot's passage of Taiwanis given, whose evolutional images are otherwise impossible with conventionai observations at intervalsof 6 h. A number of control experboents are conducted in the end of the work for understanding causesand mechanisms behind various properties.
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References
[1]
|
Bender M A,Tuleya R E,1987. A numerical study of the effects of island terrain on tropical cyclones, Mos. Wea. Rev.,115: 130-155. |
[2]
|
Brand S,Blelloch J W, 1974. Changes in the characteristic of typhoons crossing the island of Taiwan, Mos. Wea. Rev.,102: 708-713. |
[3]
|
Chang S Wei-Jen,1982. The orographic effects induced by an island mountain range on propagating tropical cyclones,Mon. Wea. Rev.,110: 1255-1270. |
[4]
|
Hsu Y C,1960. The problems of typhoon forecasting over Taiwan and its vicinity, Proc. U.S. Asian Military Weather Sympos.,9-12 Februry, Taiwan. |
[5]
|
LiPC,1963. Terrain effects on typhoons approaching Taiwan,Proc. U. S. Asian Military Weather 3-7 February, Taiwan. |
[6]
|
Putian Weather Services,Fujian Province,1975. Effects of Taiwan topographic trough on coastal gales of Fujian during active phase of typhoons. In: Proc. Typhoon Conference(Xiamen,1974)Shanghai:Shanghai People's Press,332-338. |
[7]
|
Wang S T,1980. Prediction of the behavior and strength of typhoons in Taiwan and its vicinity, Res. Rep. Chinese National Science Council,Taipei,Taiwan,108. |
[8]
|
Wang Shih-ting,1991. Observational study on the mesoscale flow structure of typhoons encountering the Taiwan terrain,International Conference on Mesoscale Meteorology and TAMEX, 3-6 December,330-341. |
[9]
|
Yang Jinghua,Xue Jishan,1995. Numerical analysis of difference between p-surface and a-surface, Journal of Tropical Meleorolog},1:98-110. |
[10]
|
Zhang Zheqian,Wei Dingwen,He Fuhua, 1975. A preliminary experimental study on the effects of typhoon structure and coastal terrain in southeastern China on typhoons,A cla Scienlia Sinica,3: 302-319. |
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