New study suggests climate models underestimate global warming. Climate models assume that radiative forcing (climate sensitivity) remains constant no matter how much CO2 is in the atmosphere. But the new research indicates that it increases by 25% with every doubling of CO2 concentration.

New study suggests climate models underestimate global warming. Climate models assume that radiative forcing (climate sensitivity) remains constant no matter how much CO2 is in the atmosphere. But the new research indicates that it increases by 25% with every doubling of CO2 concentration.