Thursday, July 22, 2021

Unsettling the apple cart II: Koonin on climate | Climate Discussion Nexus

Unsettling the apple cart II: Koonin on climate | Climate Discussion Nexus
"Being a physicist, Koonin notes the strange fact that there are about 40 major computer climate models in the world and they vary quite a bit in the results they produce. 
Why “being a physicist”? 
Because it means climate models aren’t “just physics” as some defenders claim. 
If they were we would only need one since all the models would come to the same conclusion. 
And the models don’t just disagree about future warming. 
They even disagree about the current average temperature, with the range spanning about 3°C. 
That’s three times the observed warming of the 20th century that the models purport to be able to explain. Which doesn’t add up. 
And as Koonin dug further into the IPCC reports and the underlying literature he found the problems quickly mounted...Read all.

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