Hansen's adjusting — Nashville, Tennessee


“The GISTemp homogeneity adjustment looks a little hockey-stickish, and induces an upward trend by reducing older historical temperatures more than recent historical temperatures. This has the effect of turning what is a negative trend in the HadCRUT3 [raw] data into a positive trend in the GISTemp version: [graph]

So what would appear to be a general cooling trend over the past ~130 years at this location when using the unadjusted HadCRUT3 data, becomes a warming trend when the homogeneity adjustment is supplied.” “Would you like your temperature data homogenized or pasteurized?

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