Numerical Simulation of Tropical Cyclone Development with Latent Heat Release by the Resolvable Scales. II: Propagating Small-Scale Features Observed in the Prehurricane Phase

摘要

Analysis of axisymmetric numerical simulations of hurricane structure and development reveals that large-amplitude small-scale features develop, but they are controlled by physical processes (particularly the nonlinear feedback of the moist convection onto the vertical stratification) that are more adequately modeled here than in earlier attempts. Analysis also reveals the presence of a mesoscale convective system that has many of the features of propagating multicell squall lines observed both in the tropics and in middle latitudes.