Some Aspects of Hurricane Inner-Core Dynamics and Energetics
@article{Emanuel1997SomeAO, title={Some Aspects of Hurricane Inner-Core Dynamics and Energetics}, author={Kerry A. Emanuel}, journal={Journal of the Atmospheric Sciences}, year={1997}, volume={54}, pages={1014-1026} }
Abstract The energy cycle of the mature hurricane resides in the secondary circulation that passes through the storm’s eyewall. By equating the generation of energy in this cycle to boundary layer dissipation, an upper bound on wind speed is derived. This bound depends on the degree of thermodynamic disequilibrium between the tropical ocean and atmosphere, on the difference between sea surface and outflow absolute temperatures, and also on the ratio between the enthalpy exchange and surface…
262 Citations
Analytical Models for Hurricanes
- Environmental Science, Physics
- 2014
A two-layer theoretical model of hurricanes traveling (quasi-) steadily over open seas has been developed. The use of coherency concept allowed avoiding the common turbulent approximations, except a…
Understanding Instabilities of Tropical Cyclones and Their Evolution with a Moist Convective Rotating Shallow-Water Model
- Environmental Science, Physics
- 2016
AbstractInstabilities of hurricane-like vortices are studied with the help of a rotating shallow-water model, including the effects of moist convection. Linear stability analysis demonstrates that…
Axisymmetric Hurricane in a Dry Atmosphere: Theoretical Framework and Numerical Experiments
- Environmental Science, Physics
- 2011
This paper discusses the possible existence of hurricanes in an atmosphere without water vapor and analyzes the dynamic and thermodynamic structures of simulated hurricane-like storms in moist and…
Self-Stratification of Tropical Cyclone Outflow. Part II: Implications for Storm Intensification
- Environmental Science, Physics
- 2012
Tropical cyclones intensify and are maintained by surface enthalpy fluxes that result from the thermodynamics disequilibrium that exists between the tropical oceans and atmosphere. While this general…
An experimental study on hurricane mesovortices
- Environmental Science, PhysicsJournal of Fluid Mechanics
- 2002
Mesovortices in the eyewall region of a hurricane are intriguing elements of the hurricane engine. In-situ measurements of them are sparse, however, and our understanding of their overall role in the…
A simple model of the hurricane boundary layer revisited
- Environmental Science, Physics
- 2008
A simple slab model for the boundary layer of a hurricane is re‐examined and a small error in the original calculation is corrected. With this correction, the development of supergradient winds is a…
A Multiscale Numerical Study of Hurricane Andrew (1992). Part II: Kinematics and Inner-Core Structures
- Environmental Science, Physics
- 1999
Despite considerable research, understanding of the temporal evolution of the inner-core structures of hurricanes is very limited owing to the lack of continuous high-resolution observational data of…
Asymmetric and axisymmetric dynamics of tropical cyclones
- Environmental Science, Physics
- 2013
Abstract. We present the results of idealized numerical experiments to examine the difference between tropical cyclone evolution in three-dimensional (3-D) and axisymmetric (AX) model configurations.…
Evaluation of the Assumptions in the Steady-State Tropical Cyclone Self-Stratified Outflow Using Three-Dimensional Convection-Allowing Simulations
- Environmental Science, PhysicsJournal of the Atmospheric Sciences
- 2019
The criteria and assumptions that were used to derive the steady-state tropical cyclone intensity and structure theory of Emanuel and Rotunno are assessed using three-dimensional…
A Multiscale Numerical Study of Hurricane Andrew (1992). Part IV: Unbalanced Flows
- Physics, Environmental Science
- 2001
Abstract Despite considerable progress in understanding the hurricane vortex using balanced models, the validity of gradient wind balance in the eyewall remains controversial in observational…
References
SHOWING 1-10 OF 25 REFERENCES
A Model of Hurricane Formation
- Environmental Science, Physics
- 1950
At first, the description of the energy cycle of the mature tropical storm is amplified on the basis of recent upper air observations. Air particles passing through such a storm at first undergo…
The Response of Balanced Hurricanes to Local Sources of Heat and Momentum
- Environmental Science, Physics
- 1982
Abstract Eliassen's (1951) diagnostic technique is used to calculate the secondary circulation induced by point sources of heat and momentum in balanced, hurricane-like vortices. Scale analysis…
ON THE STRUCTURE AND MAINTENANCE OF THE MATURE HURRICANE EYE
- Physics, Environmental Science
- 1958
Abstract An attempt is made to derive the significant features of a mature hurricane eye in terms of a simplified model of the physical processes undergone by the air composing it. In particular, a…
An Air–Sea Interaction Theory for Tropical Cyclones. Part II: Evolutionary Study Using a Nonhydrostatic Axisymmetric Numerical Model
- Environmental Science, Physics
- 1987
Abstract In Part I of this study an analytical model for a steady-state tropical cyclone is constructed on the assumption that boundary-layer air parcels are conditionally neutral to displacements…
Numerical Simulation of the Life Cycle of Tropical Cyclones
- Environmental Science, Physics
- 1969
Abstract The tropical cyclone is a solitary creature of the tropical oceans accompanied by violent rotating winds and torrential rain. Observational studies and diagnostic analyses leave little doubt…
Sensitivity of Tropical Cyclones to Surface Exchange Coefficients and a Revised Steady-State Model incorporating Eye Dynamics
- Environmental Science, Physics
- 1995
Abstract Numerical and theoretical models of tropical cyclones indicate that the maximum wind speed in mature storms is sensitive to the ratio of the enthalpy and momentum surface exchange…
An Air-Sea Interaction Theory for Tropical Cyclones. Part I: Steady-State Maintenance
- Environmental Science
- 1986
Abstract Observations and numerical simulators of tropical cyclones show that evaporation from the sea surface is essential to the development of reasonably intense storms. On the other hand, the…
External Influences on Hurricane Intensity. Part III: Potential Vorticity Structure
- Environmental Science, Physics
- 1995
Abstract The interaction of Hurricane Elena (1985) with a baroclinic wave was reexamined using both potential vorticity (PV) and a formulation for Eliassen-Palm fluxes in cylindrical coordinates. The…
THE RESPONSE OF A TROPICAL CYCLONE MODEL TO VARIATIONS IN BOUNDARY LAYER PARAMETERS, INITIAL CONDITIONS, LATERAL BOUNDARY CONDITIONS, AND DOMAIN SIZE
- Environmental Science
- 1971
Abstract Tropical cyclone model experiments are summarized in which the drag coefficient and the analogous exchange coefficients for sensible and latent heat are varied. During the early portions of…
Tropical Cyclone Eye Dynamics
- Environmental Science, Physics
- 1980
Abstract A new perspective of the dynamics of a tropical cyclone eye is given in which eye subsidence and the adiabatic warming accompanying it are accounted for directly from the equations of…