Quote:
|
Dr. James Hansen, said we should be at least 5 degrees Celsius warmer than we now are.
|
No one challenged the OP on his assertion that Professor Hansen was off by 5 degrees C in his prediction of global temperature increase in his statements in the 1980s. Note his did not include any links or any graphs, he just threw it out there to say.. oh that Hansen was so wrong. In his testimony before Congress in 1988 Hansen presented three outcomes. One was if the nations of the world did nothing to slow the rate of CO2 and other greenhouse gases, call that worst case scenario, or A
Next he presented a most likely scenario that something but not enough got done and he guessed what the CO2 level might be in future years and how that would impact temperatures, scenario B
Next he presented a best case if every industrial nation acted as if this were an emergency and how such actions would lessen the future temperatures, scenario C
His work was published and you can read the article from
Journal of Geophysical Research
He details the conditions he used to produce scenarios A, B, and C. At that time there was no inkling of fracking or electric cars, or the benefits of the Montreal, Paris and Kyoto accords, or more efficient ICEs. He also had primitive computers compared to what is now available. None the less, his graph is below. Note that in his worst case scenario, no changes and no actions, his predicted temperature increase was... wait for it... the OP says he told us 5 degrees...
His worst case scenario, not most likely was an increase of 1.5 degrees C by 2019 which is the end date of his graph.