An analytical study using a simplified form of the divergent barotropic vorticity equation was performed. The results show the importance of the change in the Coriolis parameter across the cyclone in determining cyclone motion.

The net influence of sub-grid or smaller unresolvable scale processes (which cannot be directly detected from conventional observations) on the tangential momentum field in tropical cyclones has been calculated as a residual from the grid-scale momentum budgets of sixteen rawinsonde composite data sets.

The numerical study presented here has focused on baroclinic processes which contribute to tropical cyclone propagation. Two numerical models were used in this work.

This paper presents results of a comprehensive study of relationship between the movement of tropical cyclones and the large-scale circulation which surrounds them.

The physical, thermodynamic and dynamic characteristics of convective cloud rings (open cell convection) occurring on July 18, 1969 during the fourth phase of the Barbados Oceanographic and Meteorological Experiment (BOMEX) in the tropical North Atlantic Ocean are studied in detail.

VHF wind profiler data were used to study the vertical draft structure within 13 tropical Mesoscale Convective Systems (MCSs) near Darwin, Australia during the wet season of 1989-1990 and 1990-1991.

Two well documented cases of tradewind disturbances are studied. One disturbance developed into Hurricane Carla (1961) while the other failed to intensify. Initially the two cases appeared to be very similar but on closer inspection the flow patterns in which the disturbances were embedded proved to have significant differences. This paper describes these differences.