新的台风风场计算方法

本文分析了Je氏风场模式与Rankine涡风场模式之间的联系,提出两种计算台风风场的新方法。新的台风风场计算方法改进了Je氏和Ran氏两个风场模式,克服了Je氏风场模式计算风速偏大,Ran氏计算风速偏小的缺点。新的风场模式的后一种模式的风速分布曲线以一种比较合理的同时优于Je氏和Kan氏的风速衰减速率向远方逐渐衰减。此外,文中提出的移动台风风场计算方法也在一定程度上改进了宫崎正卫和Je氏两个人的方法。

A NEW METHOD CALCULATING TYPHOON WIND FIELD

In this paper, the relationship between Jelesnianski's and Rankine's combined vortex of typhoon wind field distribution is analysed, and new calculation methods for typhoon wind speed are suggested. The calculation methods of typhoon wind field distribution have improved Rankine's and Jelesnianski's model, and overcome the shortcoming that the wind speed calculated with the Jelesnianski' s model is overestimated and the shortcoming that the wind speed calculated with the Rankine's model is underestimated.Wind speed distribution curve of the second new wind model v2 is better than that of Jelesnianski's and Rankine's model, and has a reasonable trend of speed decrease from maximum wind radius to infinite distance. At the same time, the computation method of moving typhoon wind field has, to some extent, improved Myazakimasa-mori's and Jelesnianski's metods.