Prof. Stefan RahmstorfFeb 5, 2023
How the climate models of 20 years ago performed for global temperature.
Black line is the model average; as it is an average it is smoother than the actual data, which include more of the random variability which is superimposed on the warming forced by greenhouse gas emissions.
Show threadStarry Starry Knight
@rahmstorf Impressive fit overall but especially at the 1989ish downward trendâť—
Feb 5, 2023 at 12:19pmWeb
Show threadAriaflameFeb 5, 2023
@Space6host @rahmstorf You did see when it was run, right?
Show threadanlomedadFeb 5, 2023
@Space6host @rahmstorf
Ah, but it's from a model from "20 years ago", as Rahmstorf wrote. So the model was fed the actual data up to 1999, (including the 1989 drop,) and from then on, it calculated its future.