台风涡旋的结构及其与台风运动的关系

用ＦＳＵ区域模式讨论台风涡旋结构及其与运动的关系，台风涡旋的运动在无基本环流和β平面条件下取决于轴不对称环流。而不对称环流的发展源自于从对称环流动能的转换。其率取决对称环流，不对称环流和地球涡度经向梯度三者的相互作用。由于不对称环流动能产生率随高度不变，故台风作为一个统一体以相同的移速移动。不对称环流的径向结构取决于对称环流的径向结构。

ON THE TYPHOON STRUCTURES AND ASSOCIATED PROPAGATION

Typhoon structures associated its propagation is investigated using the Florida State University Regional Model. It is found that the axially-asymmetric circulation associated typhoon propagation in a quiescent environment on a beta plane develops by extracting kinetic energy from the symmetric circulation of the typhoon,which in turn depends on the interaction among symmetric,asymmetric circulations and meridional gradient of the Earth's vorticity. The three-dimendional typhoon propagates at vertically uniform speed because the generation rate of asymmetric kinetic energy is independent of height. The radial model of asymmetric circulation is determined by the radial structure of symmetric circulation of the typhoon.