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Two degree Celsius rise means even higher temperatures where we live
According to a new study, a two degree Celsius rise means even higher temperatures where we live.Regions around the Arctic may have passed a 2 degree C temperature rise as far back as 2000 and, if emissions rates don\'t change, areas around the Mediterranean, central Brazil and the contiguous United States could see 2degree C of warming by 2030.
According to a new study, a two degree Celsius rise means even higher temperatures where we live.Regions around the Arctic may have passed a 2 degree C temperature rise as far back as 2000 and, if emissions rates don't change, areas around the Mediterranean, central Brazil and the contiguous United States could see 2degree C of warming by 2030.
This is despite the fact that under a business as usual scenario the world is not expected to see global average temperatures rise by 2degreeC compared to preindustrial times until the 2040s.
The ETH Zurich study has quantified the change in regional extremes in a world where global average temperatures have risen by 2degreeC.
The research shows worldwide warming extremes over land generally exceed the rise in this scenario, in some cases by as much as 6degreeC. The researchers even see starkly different rates of extreme warming over land even when global average temperatures reach just 1.5degreeC, which is the limit to the rate of warming agreed to at the Paris talks, said lead author Sonia Seneviratne.
She added "At 1.5degreeC we would still see temperature extremes in the Arctic rise by 4.4degreeC and a 2.2degreeC warming of extremes around the Mediterranean basin."
The extreme regional warming projected for Alaska, Canada, Northern Europe, Russia and Greenland could have global impacts, accelerating the pace of sea-level rise and increasing the likelihood of methane releases prompted by the melting of ice and permafrost regions.
The study appears in Nature.
