摘要
The energy dispersion of a typhoon vortex and its effect on the typhoon motion are studied using an analytical method of double-Fourier expansion as well as a numerical model in a β-plane nondivergent barotropic framework. The analytic model and the linear version of the numerical model give essentially the same result:the energy dispersion from a tropical cyclone can creat an L-H-L wave train to the east of the tropical cyclone.Three numerical experiments, integrated for 7 model days by the nonlinear model,indicate that the closed high in the wave train produces obvious in- fluence on the structure and movement of the tropical cyclone.
The energy dispersion of a typhoon vortex and its effect on the typhoon motion are studied using an analytical method of double-Fourier expansion as well as a numerical model in a β-plane nondivergent barotropic framework. The analytic model and the linear version of the numerical model give essentially the same result:the energy dispersion from a tropical cyclone can creat an L-H-L wave train to the east of the tropical cyclone.Three numerical experiments, integrated for 7 model days by the nonlinear model,indicate that the closed high in the wave train produces obvious in- fluence on the structure and movement of the tropical cyclone.
基金
This work was supported by the 8th National Five-Year Plan Science
Technology Key Iterm Foundation under Grant 85-906-07.
