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Meso- and Miso-scale structures in the eye and eyewall

Principal Investigator:

Sim Aberson (HRD)

Team Members:

Mike Black (HRD)
Michael Bell (NCAR/NPS)
Michael Montgomery (HRD/NPS)
Kathryn Sellwood (UM/CIMAS)
Daniel Stern (UM/RSMAS)
LaTricia White (FSU)
Thomas Philp (U. Sheffield)
Zachary Gruskin (HRD intern)

Objective :
Understand and describe small-scale features in tropical cyclone eyewalls and their impact on intensity

Methods:

This will be accomplished by:

  • analyzing dropwindsonde, flight-level, airborne Doppler radar, and other data within hurricane eyewalls

Accomplishments:

  • Samples of dropwindsondes with extreme horizontal and vertical motions collected
  • Airborne Doppler radar analyses of Hurricanes Fabian and Georges complete

FY08 proposed milestones:

  • Submit manuscript on horizontal motions to the Mon. Wea. Rev..
  • Begin analysis of extreme vertical motions in eyewalls.
  • Synthesize data during Fabian flight 02 September and all Isabel flights.
  • Synthesize data during Felix flight 02 September.
  • Analyze convective motions in the eye of Hurricane Emily (2005).
  • Cluster analyses of all eyewall dropwindsonde data.

References:

  • Aberson, S. D., and J. B. Halverson, 2006: Kelvin-Helmholtz waves in the eyewall of Hurricane Erin. Mon. Wea. Rev., 134, 1036-1038.

  • Aberson, S. D., J. Dunion, and F. D. Marks, Jr., 2006: Photograph of a wavenumber two asymmetry in the eye of Hurricane Erin. J. Atmos. Sci., 63, 387-391.

  • Montgomery, M. T., M. Bell, S. D. Aberson, and M. L. Black, 2006: Aberson, S. D., J. Dunion, and F. D. Marks, Jr., 2004: Photograph of a Superintense winds in Hurricane Isabel Part I : Mean vortex structure. Bull. Amer. Met. Soc., 87, 1335-1347.

  • Aberson, S. D., M. Bell, and M. L. Black, M. T. Montgomery, 2006: Superintense winds in Hurricane Isabel Part II : Extreme wind speeds. Bull. Amer. Met. Soc., 87, 1349-1354.

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Last modified: 05/10/2005
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