September 30, 2014

Australian Heat Wave Tied to Climate Change by 5 independent groups

The savage heat waves that struck Australia in 2013 were almost certainly a direct consequence of the human release of greenhouse gases, researchers said Monday. It is perhaps the most definitive statement climate scientists have made that ties a specific weather event to global warming.

Five groups of researchers, using distinct methods, analyzed the heat that baked Australia for much of last year and continued into 2014, shutting down the Australian Open tennis tournament at one point in January. All five came to the conclusion that last year's heat waves could not have been as severe without the long-term climatic warming caused by human activity.

"When we look at the heat across the whole of Australia and the whole 12 months of 2013, we can say that this was virtually impossible without climate change," said David Karoly, a climate scientist at the University of Melbourne who led one research team. [NY Times]
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