Tropical cyclone motion: a comparison of theory and observation.

The analytic predictions of tropical cyclone motion by Holland are shown to be in very good agreement with observations in the Australian/southwest Pacific region. These results indicate that a combined linear asymmetric advection and divergence of earth and cyclone vorticity provides the main mechanism for tropical cyclone motion. It is also shown that an accurate prediction requires a consideration of horizontal and vertical asymmetries in the wind field. -from Author