A Kinematical Method to Compute the Steering Velocity of a Typhoon

[摘要] The moving velocity of the center of a circular vortex is computed by applying the kinematical method on the solution of barotropic vorticity equation derived by Thompson (1954). The steering velocity is expressed in a form of weighted mean of averaged geostrophic wind. This method is also applicable for the baroclinic field both of general current and of typhoon. The baroclinic structure of typhoon has rather small effect on its movement.

[学科分类] 大气科学