It’s the unexplained adjustments

A new SPPI paper examines the raw and adjusted historical temperature records for Pennsylvania and finds the mean temperature trend from 1895 to 2009 to be minus .08°C/century, but after unexplained adjustments the official trend becomes positive .7°C/century. The difference between the raw and adjusted data exceeds the .6°C/century in global warming claimed for the 20th century. An example of the raw and adjusted datasets is shown below for Lebanon, PA:

source:http://hockeyschtick.blogspot.com/2010/04/accumulating-evidence-of-corrupted-us.html

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