Earth warming more quickly than thought, new climate models show

https://news.yahoo.com/earth-warming-more-quickly-thought-climate-models-show-145927693.html

Marlowe HOOD
,AFP•September 17, 2019

Greenhouse gases thrust into the atmosphere mainly by burning fossil fuels are warming Earth's surface more quickly than previously understood, according to new climate models set to replace those used in current UN projections, scientists said Tuesday.

By 2100, average temperatures could rise 7.0 degrees Celsius above pre-industrial levels if carbon emissions continue unabated, separate models from two leading research centres in France showed.

That is up to two degrees higher than the equivalent scenario in the Intergovernmental Panel for Climate Change's (IPCC) 2014 benchmark 5th Assessment Report.

The new calculations also suggest that the Paris Agreement goals of capping global warming at "well below" two degrees, and 1.5C if possible, will be challenging at best, the scientists said.

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With only one degree Celsius of warming so far, the world is coping with increasingly deadly heat waves, droughts, floods and tropical cyclones made more destructive by rising seas.

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other models developed independently have come to the same unsettling conclusion, Boucher confirmed.

"The most respected ones -- from the United States, and Britain's Met Office -- also show a higher ECS" than the previous generation of models, he said.

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