Climate change: IPCC report is 'code red for humanity'

Re:Climate change: IPCC report is 'code red for humanity' by fouric on Monday August 09, 2021 @11:32AM (#28118175)

There's a chart in the article from the IPCC report showing observed vs simulated global average temperature changes. How are the scientists making these models guarding against overfitting?

I am not a climate change skeptic - I am simply asking an honest question that I don't know the answer to (which will be useful for dispelling the common argument that I hear some of my friends make). I also shouldn't have to place this kind of disclaimer in my post in the first place.

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Re:Climate change: IPCC report is 'code red for humanity' by ksdakfasdf on Monday August 09, 2021 @11:41AM (#28118274)

In principle, these models can be run a la 'ab initio' (from first principles) so no fitting is required. Of course, there are subtleties and unknowns, so some fitting is needed, but overfitting can be checked in the usual ways.

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