BBC Science Focus



It could take decades for even big reductions in greenhouse gas emissions to lead to detectable changes in global surface temperatur­es, a new study in Nature Communicat­ions has found.

Even fully removing emissions of shortlived climate forcers like black carbon would not be discernibl­e for a decade. The findings emphasise the need for long-term commitment, the authors say.

“The study reinforces our understand­ing that climate change is a long-term problem that will not simply disappear if all humanrelat­ed emissions stopped tomorrow,” said Grant Allen, professor of atmospheri­c physics at the University of Manchester.

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