Vortical Swirls in Hurricane Eye Clouds

Kossin, James P.; McNoldy, Brian D.; Schubert, Wayne H.
December 2002
Monthly Weather Review;Dec2002, Vol. 130 Issue 12, p3144
Academic Journal
A collection of images depicting various swirling patterns within low-level cloud decks in hurricane eyes is presented and described. A possible causal mechanism for the presence of these cloud patterns is suggested by comparison of the observed cloud patterns with the evolution of passive tracers in a simple 2D barotropic model. The model is initialized with a barotropically unstable flow field that imitates the observed flows in hurricanes, and numerical integration of this field simulates vigorous mixing between eye and eyewall. During the mixing process, passive tracers initially embedded in the flow form swirling patterns in the eye that are strikingly similar to cloud patterns often observed in the eyes of hurricanes.


Related Articles

  • Mesovortices in Hurricane Isabel. Kossin, James P.; Schubert, Wayne H. // Bulletin of the American Meteorological Society;Feb2004, Vol. 85 Issue 2, p151 

    Presents observations in mesovortices in Hurricane Isabel. Support of barotropic instability at high azimuthal wave numbers; Evaluation of the clouds associated with the mesovortices; Validation of previous predictions based on the equations of motion.

  • Polygonal Eyewalls, Asymmetric Eye Contraction, and Potential Vorticity Mixing in Hurricanes. Schubert, Wayne H.; Montgomery, Michael T. // Journal of the Atmospheric Sciences;5/1/99, Vol. 56 Issue 9, p1197 

    Examines the asymmetric vorticity dynamics of the hurricane's eye and eyewall region within the framework of an unforced barotropic nondivergent model. Details on the potential vorticity (PV) equation based on dry potential temperature; Linear stability analysis of an annular region of...

  • A numerical study of the feedback mechanisms of hurricane-environment interaction on hurricane... Wu, Chun-Chieh; Kurihara, Yoshio // Journal of the Atmospheric Sciences;8/1/96, Vol. 53 Issue 15, p2264 

    Studies the interaction between a hurricane and its environment. Analysis of the generation and influence of potential vorticity from the Geophysical Fluid Dynamics Laboratory hurricane model; Bogused hurricane vortex.

  • Diffusion Versus Advective Rearrangement of a Circular Vortex Sheet. Kossin, James P.; Schubert, Wayne H. // Journal of the Atmospheric Sciences;2/1/2003, Vol. 60 Issue 3, p586 

    Highlights the effects of diffusion on hollow-tower atmospheric vorticity structures. Determination of the value of viscosity in three-dimensional hurricane models; Problems associated with the use of horizotal diffusion as a parameterization of the advective vorticity rearrangement process.

  • Potential Vorticity Asymmetries and Tropical Cyclone Evolution in a Moist Three-Layer Model. Shapiro, LLoyd J. // Journal of the Atmospheric Sciences;11/1/2000, Vol. 57 Issue 21, p3645 

    Provides information on a study which investigated the role of potential vorticity asymmetries in the evolution of a tropical cyclone. Details on the structure of asymmetric vortices; Simulations of hurricane vortex; Discussions on long-term evolution.

  • Nonhydrostatic, Three-Dimensional Perturbations to Balanced, Hurricane-Like Vortices. Part II: Symmetric Response and Nonlinear Simulations. Nolan, David S.; Grasso, Lewis D. // Journal of the Atmospheric Sciences;11/1/2003, Vol. 60 Issue 22, p2717 

    This paper is the second part of a study on the dynamics of nonhydrostatic perturbations to dry, balanced, atmospheric vortices modeled after tropical cyclones. In, the stability and evolution of asymmetric perturbations were presented. This part is devoted to the stability and evolution of...

  • Evolution of Multiscale Vortices in the Development of Hurricane Dolly (2008). Fang, Juan; Zhang, Fuqing // Journal of the Atmospheric Sciences;Jan2011, Vol. 68 Issue 1, p103 

    As a follow-up to a previously published article on the initial development and genesis of Hurricane Dolly (2008), this study further examines the evolution of, and interactions among, multiscale vortices ranging from the system-scale main vortex ( L > 150 km) to the intermediate-scale cloud...

  • Turn, Turn, Turn. Sundaram, T. R. // World & I;Dec98, Vol. 13 Issue 12, p168 

    Considers the characteristics of the common types of atmospheric vortex motions, and their impact on everyday lives. Description of vortices; Similarities between tornadoes, waterspouts and whirlwinds; Discussion on hurricanes and typhoons; Effects of smaller vortices; Information on the Karman...

  • Cloud-Resolving Simulations of Mesoscale Vortex Intensification and Its Effect on a Serial Mesoscale Convective System. Davis, Christopher A.; Trier, Stanley B. // Monthly Weather Review;Dec2002, Vol. 130 Issue 12, p2839 

    The authors performed numerical simulations of the 27-28 May 1998 mesoscale convective vortex (MCV) and mesoscale convective system (MCS) to understand how the MCV modulated the convection, and how the convection intensified the vortex. The fifth-generation Pennsylvania State University-National...


Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics