The lesson of Hurricane Katrina: the worst is yet to come

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Kerry Emanuel
The Ecologist
25th August 2015

Climate change shows its true face in extreme events, writes Kerry Emanuel: the storm surge with a 12 inch head start thanks to rising sea levels, propelled by a wind that's 20 mph faster, dropping an extra inch of rain beyond the 'normal' storm. Hurricane Katrina and Typhoon Haiyan are sending us a clear message: the world must get ready for bigger and badder, fast.

Three weeks and three days before Hurricane Katrina devastated New Orleans 10 years ago, a paper of mine appeared in the scientific journal Nature.

It showed that North Atlantic hurricane power was strongly correlated with the temperature of the tropical Atlantic during hurricane season, and that both had been increasing rapidly over the previous 30 years or so. It attributed these increases to a combination of natural climate oscillations and to global warming.

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