claim: “We indicated 23 years ago — in our 1994 Nature article — that climate models had the atmosphere’s sensitivity to CO2 much too high,” Christy said in a statement.
evidence: In his first paper on the matter, he estimated that global temperature would rise by around 5 to 6 °C ( 9.0 to 10.8 °F ) if the quantity of CO 2 was doubled.