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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: RetiredNow who wrote (14614)	12/5/2009 10:02:44 AM
From: Brumar89	1 Recommendation Respond to of 86356

"this period in man's history is unequivocally a period of warming unprecedented in that it is being caused by Mann himself." Fixed. ...... The US Historical Climate Network (USHCN) reports about a 0.6C temperature increase in the lower 48 states since about 1940. There are two steps to reporting these historic temperature numbers. First, actual measurements are taken. Second, adjustments are made after the fact by scientists to the data. Would you like to guess how much of the 0.6C temperature rise is from actual measured temperature increases and how much is due to adjustments of various levels of arbitrariness? Here it is, for the period from 1940 to present in the US: Actual Measured Temperature Increase: 0.1C Adjustments and Fudge Factors: 0.5C Total Reported Warming: 0.6C Yes, that is correct. Nearly all the reported warming in the USHCN data base, which is used for nearly all global warming studies and models, is from human-added fudge factors, guesstimates, and corrections. I know what you are thinking – this is some weird skeptic’s urban legend. Well, actually it comes right from the NOAA web page which describes how they maintain the USHCN data set. ...... Against all evidence, the adjustment for siting implies a modern cooling bias, which is crazy given urbanization around sites and the requirement that modern MMTS stations (given maximum wire lengths) be nearer buildings than any manual thermometer had to be 80 years ago. Even if we thought these guys were doing their best effort, can we really trust our ability to measure a signal that is substantially smaller than the noise we have to filter out? Anyway, in the last week a similar example has been found in New Zealand, via Anthony Watts: The New Zealand Government’s chief climate advisory unit NIWA is under fire for allegedly massaging raw climate data to show a global warming trend that wasn’t there. ..... climate-skeptic.com