RF wrote:Garyt wrote:Here's a pretty simple test you can do yourself if you want - shows how C02 works to increase temperature.
http://www.rsc.org/Education/Teachers/R ... n/home.htm
A very basic and simple test, using a bottle containing 100% carbon dioxide.
However two questions over the stated result does come to mind.
Firstly it doesn't answer my previous questions about temperatures on the planets Mars, Jupiter and Saturn - why are they so cold with their greenhouse gas atmospheres?
Secondly the Earth's atmosphere has only a tiny CO2 content. The example doesn't seem to mention the results with the control bottle, I would assume some temperature increase on account of the fact that the surface of the container does heat up.
As Earth's atmosphere has such a small CO2 content this experiment is not realistic in demonstrating the effects of a doubling or tripling of a tiny content. To start heating the Earth up the CO2 would need to become a substantial content of Earth's atmosphere. Even on Mars where it is 97% daytime temperatures average well below freezing. It is sufficiently cold for the CO2 to freeze at the poles.
What those kind of experiments fail to take into account are what climatologists call feedbacks. Warmests claim that the tiny co2 warming compounds the interaction of water vapor and clouds. That is grossly over simplifying though, because this results in thunderstorms which results in cooling. Salby (an atmospheric scientist) shows that the most important feedback mechanism is convection which nullifies any "green house effect" and wipes out all other feedbacks.