The positive feedback factor of CO2

In summary, the theory in question is that doubling CO2 in the atmosphere will cause a global temperature increase in the range of some 2-4 degrees Celsius. However, without positive feedback, more CO2 is merely a mild friendly climate alleviator at the most. So the issue here is the positive feedback factor of CO2 on the termination of ice ages. It is exhaustively discussed that in the ice cores we see the oxygen isotope (d18O) spikes rise before the CO2 does (d18O is assumed to be temperatures). But there is always a remedy, positive feedback. So some trigger (earth -milankovitch wobbles are assumed to trigger a first faint warming, which induces CO
  • #36
vanesch said:
(snip)I was more thinking about the argument - if I understood it correctly - that the CO2 rise in the atmosphere is "for 60% due to fossil fuel burning", and that the proof that it is *this* CO2 is the isotopic ratio which has a "fossil signature". Now, maybe this is just a summary of a much more complex argument - that's actually my question.

But if the argument stops there, then this is only at most *suggestive*, and no *proof*: you cannot logically derive the necessity of the CO2 rise by just observing this isotopic marking.(snip)

"n" reservoirs with "n" isotope signatures exchanging carbon via n2 mechanisms that partition isotopes by kinetic and/or thermodynamic effects at n2 rates isn't a system of equations that lends itself to "trivial" solution; got some of the isotope ratios, very little rate data, and one reservoir mass (atmosphere). Hence, the question, "Wanta try cataloguing the reservoir-mass-flux data situation?"
 
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  • #37
Back to the OP subject

So a complaint was filed against the movie "The Great Global Warming Swindle" about misinformation. Also this CO2 lagging was addressed here:

http://www.ofcomswindlecomplaint.net/FullComplaint/p44.htm
http://www.ofcomswindlecomplaint.net/FullComplaint/p45.htm
http://www.ofcomswindlecomplaint.net/FullComplaint/p46.htm
http://www.ofcomswindlecomplaint.net/FullComplaint/p47.htm

It may be noted that the complaint does still not address the problems with positive feedback dynamics are indicated here in the OP.
 

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