Days of extreme heat on rise, research shows: Frequency affects farming, humans and wildlife -- Calgary Herald - Postmedia News - February 26, 2014 Weather observers have relaxed at an apparent slowdown of global warming, but new Environment Canada evidence says the warming that matters most hasnt slowed down at all. The worlds average temperatures havent jumped much in the past decade after big increases during the 1990s. Observers are calling it a pause in the warming trend. Many who argue that climate change is not happening, such as the U.S. Cato Institute, claim this apparent levelling offof the worlds average temperatures is proof they are right. Now, research says the number of days with extreme heat keeps growing even when the average doesnt. Wednesdays report in the journal Nature Climate Change says these extremes - not the average day-today temperatures - are what matter most to farming, wildlife and humans. Evidence shows that not only is there no pause in the evolution of the warmest daily extremes over land, but that they have continued unabated over the observational record, the analysis says. Furthermore, the available evidence suggests that the most extreme extremes show the greatest change. This is particularly relevant for climate change impacts, as changes in the warmest temperature extremes over land are of the most relevance to human health, agriculture, ecosystems and infrastructure. ... -- Tom Spears, Postmedia News calgaryherald/technology/Days+extreme+heat+rise+research+shows/9552036/story.html
Posted on: Thu, 06 Mar 2014 04:14:40 +0000
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