On 07/03/2014 05:19, Col wrote:
"Lawrence Jenkins" wrote in message
...
So its a linear process doubling co2 twice the effect.
Is it not an *exponential* process, beyond a certain point at least.
You reach a certain level, a 'tipping point' if you like and you get
runaway warming.
That's why nobody books holidays on Venus.
--
Paul Hyett, Cheltenham