Scientists Find Human Fingerprints All Over Australia's Hottest Year on Record

Climate scientists Dr Sophie Lewis, of the Australian National University, and Professor David Karoly, of the University of Melbourne, ran two groups of computer models for a study into Australia’s scorching 2013.

In one group, they included the extra carbon dioxide in the atmosphere being added at the rates they are now.  In another group of models, they left out the human contribution.

They found that on average, the computer models with current levels of carbon dioxide managed to reproduce the temperatures comparable to that scorching year of 2013 every six years.

For the computer models without the added greenhouse gas emissions, they got a year as hot as 2013 only once in more than 12,000 years.
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Lewis’ study was one of 22 in a special edition of the Bulletin of the American Meteorological Society that looked at potential human influences on 16 extreme weather events across the globe.

Five of the 22 studies looked at Australia’s record heat of 2013.

Scientists Find Human Fingerprints All Over Australia's Hottest Year on Record