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Climate Sensitivity Wiki
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- dana1981
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I updated the wiki a few times now. Most recently I added a revisiting of James Hansen's 1988 global warming projections, which just so happen to yield a climate sensitivity of 3°C for a doubling of CO2. It's quite fascinating how all these different types of studies seem to converge on that 3°C climate sensitivity value. Makes you think that maybe they're onto something!
As always, comments are welcome.
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What about the possibility that he was only off on the rate of warming, not the final sensitivity? The 4.2 C for 2x CO2 is an equilibrium value isn't it? Maybe the 0.26 C / decade was an overestimate but only because the real world responded more slowly than he predicted, but may still reach the same 4.2 C equilibrium.
And maybe I'm dumb, but I had some trouble with your wording in saying "40% lower". I read it more like you would read a sales advertisement, like "40% off" which would mean 4.2 - (0.4*4.2) = 2.52. I understand now that you meant (3.0) x (1.40) = 4.2, but it took me a while to figure that out.
Assuming I'm not the last to have trouble here, it might be more straightforward to switch it to something like:
"Since 0.18 C is 69.2% of 0.26 C, we can also assume that climate sensitivity will be 69.2% of 4.2 C, or approximately 2.9 C."
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