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Science 16 September 2005:
Vol. 309. no. 5742, pp. 1844 - 1846
DOI: 10.1126/science.1116448

Reports

Changes in Tropical Cyclone Number, Duration, and Intensity in a Warming Environment

P. J. Webster,1 G. J. Holland,2 J. A. Curry,1 H.-R. Chang1

We examined the number of tropical cyclones and cyclone days as well as tropical cyclone intensity over the past 35 years, in an environment of increasing sea surface temperature. A large increase was seen in the number and proportion of hurricanes reaching categories 4 and 5. The largest increase occurred in the North Pacific, Indian, and Southwest Pacific Oceans, and the smallest percentage increase occurred in the North Atlantic Ocean. These increases have taken place while the number of cyclones and cyclone days has decreased in all basins except the North Atlantic during the past decade.

1 School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.
2 National Center for Atmospheric Research, Boulder, CO, USA.

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E-Letters:

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A Lay Response to Hurricane Science and Science Magagzine Policy
Thomas M Snyder
Science Online, 29 Sep 2005 [Full text]



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Science. ISSN 0036-8075 (print), 1095-9203 (online)