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Harbingers of increased Atlantic hurricane activity identified http://apocadocs.com/s.pl?1250100044
Mann, working with [others,] reconstructed the past 1,500 years of hurricanes using two independent methods. They report their results in today's (Aug. 13) issue of Nature.
One estimate of hurricane numbers is based on sediment deposited during landfall hurricanes.... The other method used a previously developed statistical model for predicting hurricane activity based on climate variables.... Both hurricane reconstructions indicate similar overall patterns and both indicate a high period of hurricane activity during the Medieval Climate Anomaly around AD 900 to 1100.
"We are at levels now that are about as high as anything we have seen in the past 1,000 years," said Mann.... "It seems that the paleodata support the contention that greenhouse warming may increase the frequency of Atlantic tropical storms," said Mann. "It may not be just that the storms are stronger, but that there are there may be more of them as well."
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