Don Easterbrook is back, and his misunderstanding of Greenland’s climate history rides again in two remarkable posts at µWatts — attempted demolitions of the new paper every denier worth his (or her) salt is frothing at the mouth to claim has been rubbished, the 11,300 year global paleoclimate reconstruction of Marcott et al ((A. Marcott, J. D. Shakun, P. U. Clark, A. C. Mix. A Reconstruction of Regional and Global Temperature for the Past 11,300 Years. Science, 2013; 339 (6124): 1198 DOI: 10.1126/science.1228026)). Unfortunately Easterbrook is as far off the mark in his two essays at µWatts (one, two) as he has ever been, which makes not only him look stupid, but everyone who relies on his “work” ((That means the Heartland Institute’s James Taylor, who relies on Easterbrook’s efforts in his latest Forbes article, and looks like a chump because of it. Well, he already looks like a chump in many respects, but this is a doozy, as chump-making status goes.)).
The easiest thing for me to do to debunk Don would have been to republish this post from January 2011, because all of the points I make there remain true, and are sufficient to discredit Easterbrook’s interpretation of Greenland temperatures and their relevance to Marcott et al, but this time round Don has actually added a couple of extra mistakes — I presume just to keep people like me on their toes. So, for the record, here are Don’s new errors: