Double trouble on the storm front
A new study by ESSL’s Greg Holland and colleague
Peter Webster (Georgia Institute of Technology) indicates
that the frequency of hurricanes and tropical storms has
doubled over the last century. This graph shows both the
total number of hurricanes and tropical storms each year
and the nine-year running average, calculated from four
years back through four years ahead of a given year. Called
a running mean, this method smoothes out year-to-year variability
to reveal the long-term trend. The study associates the
increasing storms with rising sea-surface temperatures.
For more, visit
the news release.
(Illustration by Steve Deyo, COMET.)
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trouble on the storm front
Just One Look
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