AFP - Bonn Conference: Scientists Now Project Average Global Temp Rise May Surpass 3.5C
BONN Climate researchers said Thursday the planet could warm by more than 3.5 degrees Celsius (6.3 degrees Fahrenheit), boosting the risk of drought, flood and rising seas.
The UN's target is a 2 C (3.6 degree Fahrenheit) limit on warming from pre-industrial levels for manageable climate change.
In a report issued on the penultimate day of new UN talks in Bonn, scientists said Earth's average global temperature rise could exceed the dangerous 3.5 C (6.3 F) warming they had flagged only six months ago.
Marion Vieweg, a policy researcher with German firm Climate Analytics, told AFP the 3.5 C (6.3 F) estimate had been based on the assumption that all countries will meet their pledges, in themselves inadequate, to reduce greenhouse-gas emissions. New research has found this is not "a realistic assumption," she said, adding that right now "we can't quantify yet how much above" 3.5 C (6.3 F) Earth will warm.
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