一种计算台风风场的方法

揭示Ｒａｎｋｉｎｅ涡风场模式和Ｊｅｌｅｓｎｉａｎｓｋｉ风场模式之间的联系，并设计了一种台风风场分布模式，它的风速分布曲线落在Ｊｅｌｅｓｎｉａｎｓｋｉ和Ｒａｎｋｉｎｅ涡两个风场模式的风速分布曲线之间，具有一个既优于Ｊｅｌｅｓｎｉａｎｓｋｉ又优于Ｒａｎｋｉｎｅ涡的风速衰减速率，因此它同时克服了Ｒａｎｋｉｎｅ涡模式计算风速偏小和Ｊｅｌｅｓｎｉａｎｓｋｉ模式计算风速偏大的缺点，以一种比较合理的变化趋势向远方衰减，成为一个比较切合实际的台风风场分布模式。同时，文中提出的移行台风风场计算方法对宫崎正卫、上野武夫和Ｊｅｌｅｓｎｉａｎｓｋｉ模式都有一定的改进。

A COMPUTATION METHOD FOR TYPHOON WIND FIELD

y analysing and making an approach to Ranskine's Combined Vortex and Jelesnianski's models of typhoon wind speed distribution, it is shown that there are certain internal r6lationships between the two models; Based on this reason, a new wind field model for typhoon is developed. This new model is a fairly good wind field formula, it gives a better wind speed attenuation factor and better wind speed distribution curve. At the same time, this wind speed distribution curve of the new model is located at the area between the Curves of Rankine's and Jelesnianski's models, giving an optimum attenuation rate of wind speed. The result of using the new formula is that the shortcomings of the above models, i. e. that the wind speed distribution curve tend to be too low for the Rankine model, or tend to be too high for the Jelesnianski model .have been overcome,improving the models of M. Miyazaki, T. Ueno and C. P. Jelesnianski. Preliminary calculation results of real typhoon wind field show that the new model of typhoon wind field is better than Rankine's and Jelesnianski's models.