Wednesday, January 9th 2013, 2:31 PM EST
NOAA has inflated the 2012 record maximum number by adding new stations which didn’t exist during the hot years of the 1930s. That is a completely illegitimate approach, suitable only for government workers.
An apples to apples comparison uses only the same stations. When that is done, 2012 doesn’t even crack the ten hottest years.