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Re: Why I am a “skeptic”
Furthermore, wasn't CO2 increasing from 1940 to 1970?
sigh
Your inability to read the graph is not helping you here. The red line is the prediction, and it starts in 1967. There was no "warming pause" in 2000. Both should be screamingly obvious from the graph.
Anyway.... The model was not designed to provide a 100% accurate year-by-year prediction from 1967 to 2017. Nor did it make any such claim.
In fact, none of the models make claims like that. They aren't making 10-day weather forecasts, they are predicting long-term trends. As a result, they don't usually include events like volcanic eruptions or ENSOs that can have effects for up to a decade. They're looking at long-term trends.
The model specifically predicts that "if CO2 PPM doubles from 300ppm to 600ppm, we will see 2.3C of warming." The rise in CO2 and the rise in temperatures we've seen over the past 50 years fits that prediction very well.
Furthermore, wasn't CO2 increasing from 1940 to 1970?