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Matt Ridley: Cooling Down the Fears of Climate Change - WSJ.com
The climate alarmist case has been undone. The AGW skeptics are vindicated.
No, the IPCC report isn't final, but it will be impossible to put the genie back into the bottle now.
... The conclusion—taking the best observational estimates of the change in decadal-average global temperature between 1871-80 and 2002-11, and of the corresponding changes in forcing and ocean heat uptake—is this: A doubling of CO2 will lead to a warming of 1.6°-1.7°C (2.9°-3.1°F).
This is much lower than the IPCC's current best estimate, 3°C (5.4°F).
Mr. Lewis is an expert reviewer of the recently leaked draft of the IPCC's WG1 Scientific Report. The IPCC forbids him to quote from it, but he is privy to all the observational best estimates and uncertainty ranges the draft report gives. What he has told me is dynamite.
Given what we know now, there is almost no way that the feared large temperature rise is going to happen. Mr. Lewis comments: "Taking the IPCC scenario that assumes a doubling of CO2, plus the equivalent of another 30% rise from other greenhouse gases by 2100, we are likely to experience a further rise of no more than 1°C."
The climate alarmist case has been undone. The AGW skeptics are vindicated.
No, the IPCC report isn't final, but it will be impossible to put the genie back into the bottle now.