"Extreme heat waves such as those that hit the US in 2012 and Australia in 2009—dubbed three-sigma events by the researchers—are projected to cover double the amount of global land by 2020 and quadruple by 2040. Meanwhile, more-severe summer heat waves—classified as five-sigma events—will go from being essentially absent in the present day to covering around three per cent of the global land surface by 2040." ---- "Under a high emission scenario, the projections show that by 2100, 3-sigma heat waves will cover 85 per cent of the global land area and five-sigma heat waves will cover around 60 per cent of global land." phys.org/news/2013-08-frequent-severe.html
Posted on: Thu, 15 Aug 2013 00:05:06 +0000
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