Hopes of mild climate change dashed by new research | Environment | The Guardian
Hopes that the world’s huge carbon emissions might not drive temperatures up to dangerous levels have been dashed by new research.
The work shows that temperature rises measured over recent decades do not fully reflect the global warming already in the pipeline and that the ultimate heating of the planet could be even worse than feared.
How much global temperatures rise for a certain level of carbon emissions is called climate sensitivity and is seen as the single most important measure of climate change. Computer models have long indicated a high level of sensitivity, up to 4.5C for a doubling of CO2 in the atmosphere.