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David Deming Jonathan Overpeck “We have to get rid of the Medieval Warm Period”

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Presentation on theme: "David Deming Jonathan Overpeck “We have to get rid of the Medieval Warm Period”"— Presentation transcript:

1

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3 David Deming

4 Jonathan Overpeck

5 “We have to get rid of the Medieval Warm Period”

6 Michael Mann

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9 Sir John Houghton

10 Steve McIntyre

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12 Gaspé

13 Twisted Tree, Heartrot Hill

14 Ross McKitrick

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16 BACKTO_1400-CENSORED

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18 Ring width Years AD 20001500

19 Ring width Years AD 20001500

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21 Hockey stick from red noise

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25 Bristlecone pine

26 “…the long-term trend in [the Northern Hemisphere] is relatively robust to the inclusion of dendroclimatic indicators in the network...”

27 Caspar AmmannEugene Wahl

28 James SaiersJay FamigliettiStephen Schneider

29 Joe BartonSherwood Boehlert

30 Edward Wegman

31 Gerald North

32 ‘“strip-bark” samples [i.e. bristlecones] should be avoided for temperature reconstructions’

33 Hockey stick from red noise

34 “Based on the analyses…by Mann et al. and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium.”

35 “Similar” temperature reconstructions

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37 Climategate

38 http://bit.ly/9mkvn4

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40 Judith Curry

41 “ I am laying down the gauntlet, this really needs to be discussed and rebutted by the paleo researchers and the IPCC defenders. ”

42 www.bishop-hill.net

43 ...a rattling good detective story and a detailed and brilliant piece of science writing." Spectator The Hockey Stick Illusion is one of the best science books in years…This book deserves to win prizes. Prospect Andrew Montford tells this detective story in exhilarating style. Geoscientist …a code-breaking adventure, an intriguing detective story, an exposé of a scientific and political travesty… Quadrant


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