Hydrodynamic Model of Wind Field in a Moving Typhoon

E. M. Dobryshman and N. K. Turbaevskaya

An algorithm is developed for solving the hydrodynamic equations describing wind field structure in a typhoon. The specific feature of the algorithm consists in solving an overdetermined set of equations: given radial profiles of pressure and vertical velocity component, horizontal wind components are found. Projection of angular momentum on tangential direction plays a role of “error of closure.” The calculated wind fields in resting and moving typhoons are presented. As an example, the whole lifecycle of Typhoon Ivan (September 2–17, 2004) is described in detail.