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Politics : Politics of Energy
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To: Thomas A Watson who wrote (42370)8/25/2013 7:00:35 PM
From: Wharf Rat  Read Replies (1) of 86356
 
Pay no attention to the words "remarkably accurate"; they are DQ'ed for having too many syllables.

In this post we will evaluate this contrarian claim by comparing the global surface temperature projections from each of the first four IPCC reports to the subsequent observed temperature changes. We will see what the peer-reviewed scientific literature has to say on the subject, and show that not only have the IPCC surface temperature projections been remarkably accurate, but they have also performed much better than predictions made by climate contrarians (Figure 1).



Figure 1: IPCC temperature projections (red, pink, orange, green) and contrarian projections (blue and purple) vs. observed surface temperature changes (average of NASA GISS, NOAA NCDC, and HadCRUT4; black and red) for 1990 through 2012.
skepticalscience.com
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