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Hurricane frequency is up but not their strength, say Clemson researchers

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OKIsItJustMe Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-22-09 02:49 PM
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Hurricane frequency is up but not their strength, say Clemson researchers
http://www.clemson.edu/media-relations/article.php?arti...

Hurricane frequency is up but not their strength, say Clemson researchers

Published: September 22, 2009

CLEMSON In a new study, Clemson University researchers have concluded that the number of hurricanes and tropical storms in the Atlantic Basin is increasing, but there is no evidence that their individual strengths are any greater than storms of the past or that the chances of a U.S. strike are up.

Robert Lund, professor of mathematical sciences at Clemson, along with colleagues Michael Robbins and Colin Gallagher of Clemson and QiQi Lu of Mississippi State University, studied changes in the tropical cycle record in the North Atlantic between 1851 and 2008.

This is a hot button in the argument for global warming, said Lund. Climatologists reporting to the U.S. Senate as recently as this summer testified to the exact opposite of what we find. Many researchers have maintained that warming waters of the Atlantic are increasing the strengths of these storms. We do not see evidence for this at all, however we do find that the number of storms has recently increased.

The study represents one of the first rigorous statistical assessments of the issue with uncertainty margins calculated in. For example, Lund says there is less than a one in 100,000 chance of seeing this many storms occur since 1965 if in truth changes are not taking place.




This graph shows the number of tropical cyclones (hurricanes plus tropical storms) that have been observed since 1850.
image by: Robert Lund, Clemson University
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