TITLE

Tropical Cyclone Inner-Core Kinetic Energy Evolution

AUTHOR(S)
Maclay, Katherine S.; DeMaria, Mark; Vonder Haar, Thomas H.
PUB. DATE
December 2008
SOURCE
Monthly Weather Review;Dec2008, Vol. 136 Issue 12, p4882
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Tropical cyclone (TC) destructive potential is highly dependent on the distribution of the surface wind field. To gain a better understanding of wind structure evolution, TC 0–200-km wind fields from aircraft reconnaissance flight-level data are used to calculate the low-level area-integrated kinetic energy (KE). The integrated KE depends on both the maximum winds and wind structure. To isolate the structure evolution, the average relationship between KE and intensity is first determined. Then the deviations of the KE from the mean intensity relationship are calculated. These KE deviations reveal cases of significant structural change and, for convenience, are referred to as measurements of storm size [storms with greater (less) KE for their given intensity are considered large (small)]. It is established that TCs generally either intensify and do not grow or they weaken/maintain intensity and grow. Statistical testing is used to identify conditions that are significantly different for growing versus nongrowing storms in each intensification regime. Results suggest two primary types of growth processes: (i) secondary eyewall formation and eyewall replacement cycles, an internally dominated process, and (ii) external forcing from the synoptic environment. One of the most significant environmental forcings is the vertical shear. Under light shear, TCs intensify but do not grow; under moderate shear, they intensify less but grow more; under very high shear, they do not intensify or grow. As a supplement to this study, a new TC classification system based on KE and intensity is presented as a complement to the Saffir–Simpson hurricane scale.
ACCESSION #
36092267

 

Related Articles

  • TROPICAL CYCLONE DESTRUCTIVE POTENTIAL BY INTEGRATED KINETIC ENERGY. Powell, Mark D.; Reinhold, Timothy A. // Bulletin of the American Meteorological Society;Apr2007, Vol. 88 Issue 4, p513 

    Tropical cyclone damage potential, as currently defined by the Saffir-Simpson scale and the maximum sustained surface wind speed in the storm, fails to consider the area impact of winds likely to force surge and waves or cause particular levels of damage. Integrated kinetic energy represents a...

  • Spray Stress Revisited. Andreas, Edgar L. // Journal of Physical Oceanography;Jun2004, Vol. 34 Issue 6, p1429 

    In winds approaching hurricane strength, spray droplets proliferate. Once created, these droplets accelerate to the local wind speed in 1 s or less and thereby extract momentum from the wind. Because these droplets have substantial mass, they eventually plunge back into the ocean, delivering...

  • Wavelet Analyses of Turbulence in the Hurricane Surface Layer during Landfalls. Zhu, Ping; Zhang, Jun A.; Masters, Forrest J. // Journal of the Atmospheric Sciences;Dec2010, Vol. 67 Issue 12, p3793 

    Using wavelet transform (WT), this study analyzes the surface wind data collected by the portable wind towers during the landfalls of six hurricanes and one tropical storm in the 2002--04 seasons. The WT, which decomposes a time series onto the scale-time domain, provides a means to investigate...

  • Using wind power to prevent tropical cyclone development. Kaganov, V. I. // Technical Physics Letters;Mar2006, Vol. 32 Issue 3, p252 

    A rough model of a tropical cyclone in the form of a spatial autooscillatory system of the spiral type is proposed. Based on this model, the kinetic energy of a cyclone is estimated and a method of preventing cyclone development is proposed. According to this method, a flow of air generated by...

  • NC pounded by ice and snow; FL enjoys rain relief.  // American Nurseryman;1/15/2003, Vol. 197 Issue 2, p12 

    Reports on the destruction of trees due to the winter blast in Charlotte, North Carolina. Damage of the landscapes; Refusal of the residents to prune the trees along the power lines; Lack of irrigation in the area.

  • The axisymmetric collapse of a mixed patch and internal wave generation in uniformly stratified fluid. Holdsworth, Amber M.; Décamp, Sabine; Sutherland, Bruce R. // Physics of Fluids;Oct2010, Vol. 22 Issue 10, p106602 

    Laboratory experiments are used to investigate the axisymmetric collapse of a localized mixed region in uniformly stratified ambient. The collapsing fluid forms an intrusion and generates vertically propagating internal gravity waves in the stratified ambient. The speed of the intrusion is found...

  • Calm Before the Storm? Clark, Karen // Canadian Underwriter;Jul2015, Vol. 82 Issue 7, p16 

    The article discusses the effect of climate change on hurricane intensity, and an expected increase in impacted area and geographical extent of storms affected by climate change. Topics include a discussion on how Canada is affected by North American hurricane activity, an analysis on whether...

  • Estimates of tropical cyclone geometry parameters based on best track data. Nederhoff, Kees; Giardino, Alessio; van Ormondt, Maarten; Vatvani, Deepak // Natural Hazards & Earth System Sciences Discussions;2019, p1 

    Parametric wind profiles are commonly applied in a number of engineering applications for the generation of tropical cyclone (TC) wind and pressure fields. Nevertheless, existing formulations for computing wind fields often lack the required accuracy when the TC geometry is not known. This may...

  • Turbulence Structure of the Hurricane Boundary Layer between the Outer Rainbands. Jun A. Zhang; Drennan, William M.; Black, Peter G.; French, Jeffrey R. // Journal of the Atmospheric Sciences;Aug2009, Vol. 66 Issue 8, p2455 

    As part of the Coupled Boundary Layers Air–Sea Transfer (CBLAST)-Hurricane program, flights were conducted to directly measure turbulent fluxes and turbulence properties in the high-wind boundary layer of hurricanes between the outer rainbands. For the first time, vertical profiles of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics