Aerodynamic Models for Hurricanes II. Model of the upper hurricane layer

TL;DR

This paper develops an analytical aerodynamic model for the upper layer of hurricanes, describing pressure and wind distributions and their vertical evolution, providing insights into hurricane structure and dynamics.

Contribution

It introduces a simplified, analytical model of the upper hurricane layer that captures key features and predicts changes in wind direction and angular velocity with altitude.

Findings

Model predicts change in radial wind direction with altitude

Model describes vertical evolution of pressure and wind distributions

Provides analytical expressions for hurricane structure in the upper layer

Abstract

This second paper of the series (see the first one in [1]) models the dynamics and structure of upper hurricane layer in adiabatic approximation. Formulation of simplified aerodynamic model allows analytically express the radial istributions of pressure and wind speed components. The vertical evolution of these distributions and hurricane structure in the layer are described by a coupled set of equations for the vertical mass flux and vertical momentum balance, averaged over the eye wall cross section. Several realistic predictions of the model are demonstrated, including the change of directions for the component of radial wind speed and angular velocity of hurricane with altitude.