In 1999, Hansen thought that the US had cooled half a degree since the 1930s.
Empirical evidence does not lend much support to the notion that climate is headed precipitately toward more extreme heat and drought. The drought of 1999 covered a smaller area than the 1988 drought, when the Mississippi almost dried up. And 1988 was a temporary inconvenience as compared with repeated droughts during the 1930s “Dust Bowl” that caused an exodus from the prairies, as chronicled in Steinbeck’s Grapes of Wrath.
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 (Figure 2).
But that just wasn’t going to do, so the next year they rewrote US history to create a non-existent warming trend.
This 1998 video shows NASA’s effort to promote 1946 deception:
a.) Releasing data [1] from the 1995 Galileo probe of Jupiter, that
b.) Confirmed predictions in a 1983 paper [2] on the iron-rich Sun,
c.) Based on analysis [3] of Apollo lunar soil collected in 1969, that
d.) Discredited Fred Hoyle’s 1946 evidence [4,5] for H-filled stars
http://www.youtube.com/watch?v=m3VIFmZpFco
1. O. Manuel, “Isotopic ratios in Jupiter confirm intra-solar diffusion”, Meteoritics and Planetary Science 33, A97, paper 5011 (1998): http://www.lpi.usra.edu/meetings/metsoc98/pdf/5011.pdf
2. O. K. Manuel and Golden Hwaung, “Solar abundances of the elements” Meteoritics 18, 209-222 (1983): http://tinyurl.com/224kz4
3. Nine stages of solar mass fractionation observed in 1969 Apollo lunar soils:
http://www.omatumr.com/Data/1983Data.htm
4. Fred Hoyle, “The chemical composition of the stars,” Monthly Notices Royal Astronomical Society 106, 255-259 (1946)
5. Fred Hoyle, “The synthesis of elements from hydrogen,” Monthly Notices Royal Astronomical Society 106, 343-383 (1946).
Here is an updated one-page synopsis of the 1945-2013 history of science
https://dl.dropboxusercontent.com/u/10640850/Synopsis.pdf
That summarizes detailed information sent to the Congressional Space Science and Technology Committee
https://dl.dropboxusercontent.com/u/10640850/Creator_Destroyer_Sustainer_of_Life.pdf
The corruption of science first became public in 2009 emails and documents:
http://joannenova.com.au/global-warming-2/climategate-30-year-timeline/
What exactly made he change his mind about the truth?
In a word. Money.