The AGW Cult corruption is easily proven as they tamper with past temperature data. In a saner world, these guys would be in jail.
In 1975, the National Academy of Sciences published the graph below – showing that the 1930s were very hot in the northern hemisphere, and that there had been a sharp cooling trend since 1940.
Neither of these facts fit Hansen’s theory, so he largely got rid of both.
GISS has a link on their web page to the data.
Annual and five-year running mean temperature changes with the base period 1951-1980 for the northern (red) and southern (blue) hemispheres.
available is a table
Their public data link is of course forbidden, in the spirit of transparency.
Fortunately I was able to find a link in the Internet archive from 2010.
The graph below plots Hansen’s Northern Hemisphere five year running mean from that data set…
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