What evidence is there that more CO2...

...forces temperature up further? See the answer to this pivotal question in The Sceptics Handbook (a great resource)...here
From the comments page...I am a degreed, career geoscientist and environmental consultant and am presently Environmental Manager for a major American university system. ..As a geoscienctist and environmetal steward, I have closely studied the data for close to a decade and can find no convincing evidence that greenhouse gas emissions are a significant cause of warming...
...Take away the politics, and the science does not support the assertions by alarmists. While we cannot know individual motives, it is clear that climate is one of the best funded areas of modern science. Those who have a vested interest in research funding are having a difficult time staying objective and resisting the pressures to align the “science” to fit the “religion” of anthropogenic global warming...