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Science and Technology Seminar

A New Metric for

Hurricane Intensity

Dr. Mark D. Powell

Atlantic Oceanographic and Meteorological Laboratories

Oceanic and Atmospheric Research

National Oceanic and Atmospheric Administration

U.S. Department of Commerce

Hurricane Katrina demonstrated that neither the maximum sustained wind speed nor the Saffir Simpson scale can adequately convey a hurricane’s potential impact over a large area susceptible to storm surge and wave damage. Kinetic energy calculations from observation-based analyses of the Hurricane’s surface wind field have been related to damage, and recent storms have been investigated to examine the range in values associated with damage potential from wind, waves and surge. Both topics will be discussed.

Images of kinetic energy computed from the wind field takes into account storm size.  Katrina - Cat 3 landfall versus Katrina - Cat 5 landfall.

April 18, 2006

2 - 3 p.m. SSMC#2,

Room 2358

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(Contact: Bob Glahn at (301) 713-1768)