“A widely used prediction is for an eventual warming of between 2.7 degrees Fahrenheit and 8.1 degrees sometime in the middle of the next century.
Lashof used a computer model that incorporated additional “biogeochemical” processes that increased warming might stimulate. The central prediction from this model was for a warming of 6.3 degrees.
The augmented model yielded a central prediction for 17.5-degree warming, 11.2 degrees more than the original model.”
Dec 08, 1988, page 12 – Tri-City Herald at Newspapers.com
h/t Steve Milloy