USHCN 2.5 corrupts the US temperature record even more than the previous version. They have turned half a degree of measured cooling into a full degree of warming since 1920, and changed 2012 from third warmest to 1.5 degrees warmer than any other year.
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I wonder how many times little Jimmy adjusted his report card, while riding the short bus home?
As cooling continues, the adjustments must keep up.