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Derivation of Parametric Tropical Cyclone Models for Storm Surge Modeling 被引量:2
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作者 王志力 陆永军 耿艳芬 《China Ocean Engineering》 SCIE EI 2010年第2期245-254,共10页
In this paper, the parametric tropical cyclone models for storm surge modeling are further developed. Instead of tangential wind speed via cyclostrophic balance and radial wind speed using a simple formulation of defe... In this paper, the parametric tropical cyclone models for storm surge modeling are further developed. Instead of tangential wind speed via cyclostrophic balance and radial wind speed using a simple formulation of defection angle, the analyrical expressions of tangential and radial wind speed distribution are derived from the governing momentum equations based on the general symmetric pressure distribution of Holland and Fujita. The radius of the maximum wind is estimated by tropical cyclone wind structure which is characterized by the radial extent of special wind speed. The shape parameter in the pressure model is estimated by the data of several tropical cyclones that occurred in the East China Sea. Finally, the Fred cyclone (typhoon 199417) is calculated, and comparisons of the measured and calculated air pressures and wind speed are presented. 展开更多
关键词 tropical cyclone parametric tropical cyclone model storm surge radius of maxirmun wind shapeparameter
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A New Method for Calculating the Wind Speed Distribution of a Moving Tropical Cyclone
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作者 胡邦辉 杨修群 +2 位作者 谭言科 王咏青 范勇 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2010年第1期69-79,共11页
Based on gradient wind equations, including frictional force, and considering the effect of the movement of a tropical cyclone on wind speed, the Fujita Formula is improved and further simplified, and the numerical sc... Based on gradient wind equations, including frictional force, and considering the effect of the movement of a tropical cyclone on wind speed, the Fujita Formula is improved and further simplified, and the numerical scheme for calculating the maximum wind speed radius and wind velocity distribution of a moving tropical cyclone is derived. In addition, the effect of frictional force on the internal structure of the tropical cyclone is discussed. By comparison with observational data, this numerical scheme demonstrates great advantages, i.e. it can not only describe the asymmetrical wind speed distribution of a tropical cyclone reasonably, but can also calculate the maximum wind speed in each direction within the typhoon domain much more accurately. Furthermore, the combination of calculated and analyzed wind speed distributions by the scheme is perfectly consistent with observations. 展开更多
关键词 tropical cyclone maximum wind speed radius wind velocity distribution
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