More fatal flaws in the Shakun et al. Nature paper claiming that CO2 preceded late glacial warming [Part 2]

By Dr. Don Easterbrook In Part 1 , I posed 11 questions related to underlying assumptions and misconceptions that form the basis for the paper “Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation by Shakun et al. (Nature 2012) and discussed the first five questions related to the authors claim to…

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Shakun The Last, I Hope

Guest Post by Willis Eschenbach In three previous posts here, here, and here, I discussed problems with the paper by Shakun et al., “Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation” (PDF,hereinafter S2012) Commenters said, and reasonably so, that I had not fully addressed their claim that warming progressed from south…

Shakun, Not Stirred, and Definitely Not Area-Weighted

I’d like to highlight one oddity in the Shakun et al. paper, “Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation” (Shakun2012), which I’ve discussed here and here. They say: The data were projected onto a 5°x5° grid, linearly interpolated to 100-yr resolution and combined as area-weighted averages. The oddity I want you…

Shakun Redux: Master tricksed us! I told you he was tricksy!

Guest Post by Willis Eschenbach The quote above is from Lord of the Rings, an exchange between Gollum and Smeagol, and it encapsulates my latest results from looking into the Shakun 2012 paper, “Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation” (paywalled, at Nature hereinafter Shakun2012). I discussed the paper in my…