In 1991, NOAA showed little or no US warming and correctly showed the 1930’s as the hottest decade in the US. They showed the mean US temperature from 1901 to 1990 as 11.4C.
NOAA has since cooled the past, and now show the mean US temperature from 1901 to 1990 as 11.1C.
Climate at a Glance | National Centers for Environmental Information (NCEI)
The next graph overlays the 2017 graph on the 1991 graph, at identical scales on both axes. NOAA creates US warming by cooling the past.
NASA does exactly the same thing. Their 1999 US temperature graph correctly showed the 1930’s as the hottest decade in the US, with subsequent cooling through the end of the century.
NASA has since cooled the period 1920-1950, and massively warmed post-1980 temperatures, to turn the cooling trend into a warming trend.
The next graph overlays the 2017 NASA graph on the 1999 NASA graph, with identical scales on both axes.
The US is the only place on Earth with reliable long term temperature data, and both NASA and NOAA have tampered with the data to turn post-1930 US cooling into warming.
But it is much worse than it seems. NOAA has almost no daily temperature data outside of North America prior to 1930, and very little prior to 1955.
The US temperature data has been tampered with to turn cooling into warming, and the global temperature data prior to 1955 is simply fake. It is time to put this global warming scam down once and for all.
via The Deplorable Climate Science Blog
November 7, 2017 at 04:18AM
Iowa Climate Science Education 