Abstract: To understand the nature of coupling between a hurricane vortex and asymmetries in its near-core region, it is first necessary to have an understanding of the spectrum of free waves on barotropic vortices. As foundation ...

Abstract: This work examines further the problem of tropical cyclogenesis by convective generation of vertical vorticity within a preexisting cyclonic circulation whose initial maximum tangential wind is approximately 5 m s?1. This ...

Abstract: High spatial and temporal resolution simulations using the Rotunno and Emanuel axisymmetric, cloud-resolving, hurricane model are found to greatly exceed Emanuel?s energetically based upper bound for maximum potential ...

Abstract: In numerical simulations using an axisymmetric, cloud-resolving hurricane model, hurricane intensity shows quasi-steady-state behavior. This quasi-steady intensity is interpreted as the maximum possible intensity (MPI) of ...

Abstract: We examine the role of interior potential vorticity perturbations in surface frontogenesis using the two-dimensional semigeostrophic Eady model. Fronts form rapidly for properly configured small disturbances even at zonal ...

Abstract: his study examines further the characteristics of turbulent flow in the low-level region of intense hurricanes using in situ aircraft observations. The data analyzed here are the flight-level data collected by research ...

Abstract: The vertical alignment of an initially tilted geostrophic vortex is shown here to be captured by linear vortex Rossby wave dynamics when the vortex cores at upper and lower levels overlap. The vortex beta Rossby number, ...

Abstract: We previously examined surface frontogenesis as an initial value problem in a dry inviscid semigeostrophic Eady model focusing on the frontal dynamics associated with interior potential vorticity anomalies. This work ...