A recent comment, here, questions the AGW prediction of polar amplification. He cites a paper by Polyakov et al that he claims shows temperatures in the arctic were warmer than they are now earlier in the 20th century.
[Update: paper is here[PDF]]
I don't have access to the paper or time to research it well, does anyone else have any comments? My initial impression is that it is about ocean temperatures in one region of the north Atlantic, and I do not trust the numbers he quotes which came from CO2 Science, a site that habitually misrepresents the papers it highlights. But that is hardly…
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