Adjusting produces the warming

What was learned

In comparing the difference between the [adjusted] and RAW [U.S.] temperature trends, Balling and Idso found a nearly monotonic increase of over 0.05°C per decade, which they found to be highly significant at the 0.0001 level of confidence. In addition, they found that “the trends in the unadjusted temperature records [were] not different from the trends of the independent satellite-based lower-tropospheric temperature record or from the trend of the balloon-based near-surface measurements.”

What it means

In the words of the two Arizona State University Office of Climatology researchers, the adjustments that were being made to the raw USHCN temperature data were “producing a statistically significant, but spurious, warming trend” that “approximates the widely-publicized 0.50°C increase in global temperatures over the past century.” It would thus appear that in this particular case of “data-doctoring,” the cure was much worse than the disease. And it likely still is! In fact, it would appear that the cure may actually be the disease.

Unfortunately, it also appears that the disease has spread, both far and wide, and become a global pandemic; for Klotzbach et al. (2009) have recently found that for the updated period of 1979-2008, “there have, in general, been larger linear trends in surface temperature data sets such as the NCDC [the U.S. National Climate Data Center] and HadCRUT3v [University of East Anglia] surface data sets when compared with the [satellilte-derived] lower-tropospheric data sets.” And they note that Santer et al. (2005) have said that such could occur “if the surface warming had been over-estimated by 0.05°C per decade in the IPCC data,” which is the very same difference that Balling and Idso obtained.” “A Warming Bias in the U.S. Temperature Record???

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