Study: ‘Human fingerprint’ covers global heating seen from before industrial era to today

Independent‘Human fingerprint’ covers global heating seen from before industrial era to today, research says. The impact of greenhouse gas emissions on global temperatures would have been even larger if were not for the cooling impact of air pollution, study finds.

A “human fingerprint” covers the global temperature rise seen from before the industrial era to today, new research has found.

From pre-industrial times to near present day, worldwide temperatures increased by about 1.1C, according to the research.

The study says that, over that period, greenhouse gases released by humans caused global temperatures to go up by between 1.2 and 1.9C.

But at the same time, air pollution from humans had a net cooling effect, causing temperatures to decrease by between 0.1 and 0.7C, the study says.

Nathan Gillett, a climate scientist from the government of Canada and lead author of the study published in the journal Nature Climate Change, told The Independent: “This is the first study to calculate the separate contributions of greenhouse gases and aerosols to temperature changes since the 1800s, rather than just their contributions to trends over the past 50 to 60 years.

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