NASA: James Hansen testifies that man-made Global Warming is underway

On June 23, 1988, Dr James Hansen, director of the NASA Goddard Space Institute, gave testimony to the U.S. Senate Committee on Energy and Natural Resources presenting his computer simulated climate warming findings which were published 2 months later, on August 20, 1988, in the paper titled “Global Climate Changes as Forecast by Goddard Institute for Space Studies – Three-Dimensional Model“. [3]

This testimony, predicted man-made Global Warming through man-made greenhouse gas emissions that were warming the Earth’s atmosphere. They considered the combined effects of five greenhouse gases: CO₂, CFC11, CFC12, N₂O, and CH₄ and predicted, via computer simulations, a “warming of 0.5°C per decade”. [1, 2]

This computer Model II CAN NOT be checked as NASA lost [3] the 1988 “source code“!
Hansen also provided testimony as a “private citizen” 7 1/2 months prior on November 9, 1987, where he shares these same findings.
Hansen testifies again to the House committee on July 7, 1988.

Six months later in December 1988 the UN IPCC is established