Terence Corcoran, Financial Post
Published: Wednesday, December 05, 2007
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Stripped of its 2,000-year sensation, the IPCC now trumpets a new chart as the official Global Temperature Record. This is the first graphic in the IPCC's latest official pre-Bali "synthesis" report on climate science. It's another scientific icon that purports to show temperatures soaring over the last 25 years. The recent jump, the IPCC says, is "very likely" due to man-made carbon emissions.
But a new paper by Ross McKitrick of Guelph University and Patrick Michaels of the Cato Institute suggests the latest IPCC climate-change icon could be as flawed as the hockey stick. One of the main problems with the 2,000-year graphic is that it wiped out a well-known Medieval Warm Period from 1,000 years ago. The McKitrick/Michaels analysis looks at the other end of the time spectrum and finds that much of the recent warming trend may be a function of faulty, contaminated data. It may simply be wrong.
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