基于强风圈半径的台风风场模型

Abstract

首先用JElESnIAnSkI台风风场模型及美国联合台风警报中心(JTWC)整编的台风资料,计算10级和7级风圈半径,并与气象部门的发布值相比,发现两者存在较大误差.进而,在JElESnIAnSkI台风风场模型的基础上,提出一种基于最大风速半径、10级和7级风圈半径的台风风场模型,并比较两种台风风场模型的风速剖面.结果表明:该模型比包括被广泛应用的JElESnIAnSkI台风风场模型在内的前人提出的台风风场模型都更接近台风风场实况,其中10级和7级风圈半径与气象部门的发布值是一致的.

The wind radii of level ten and level seven were calculated by Jelesnianski typhoon wind field model with typhoon data from Joint Typhoon Warning Center(JTWC).The error was considerable when compared to the release value of meteorological department.Thus a new typhoon wind filed model,which was based on the radii of maximum、level ten and level seven wind speed was proposed referring to Jelesnianski model.Then the wind profiles of the two models were compared.The result showed that the typhoon wind field calculated by the new model was more closer to reality than by any other models include the Jelesnianski model,which was popular used.And the wind radii of level ten and level seven in the new model were the same to the release value of meteorological department.