In 1989, NOAA said that there was no evidence of warming in the US
February 04, 1989
Last week, scientists from the United States Commerce Department’s National Oceanic and Atmospheric Administration said that a study of temperature readings for the contiguous 48 states over the last century showed there had been no significant change in average temperature over that period. Dr. (Phil) Jones said in a telephone interview today that his own results for the 48 states agreed with those findings.
NASA’s James Hansen wrote this in 1999 :
in the U.S. there has been little temperature change in the past 50 years, the time of rapidly increasing greenhouse gases — in fact, there was a slight cooling throughout much of the country
But that wasn’t going to scare anyone out of their money, so they simply altered the data. The graph below shows the difference between today’s NCDC published US temperatures, and the thermometer data which it is based on.
They claim that 2012 is the warmest year by almost a degree, and they accomplished that by subtracting a degree from the hot years of the 1920s and 1930s.