Originally posted by Mountain Man
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that has a negligible impact on global temperatures.
Due to the water vapor feedback, and other effects, its more like 3C per doubling of CO2, which is thankfully much less than what scientists feared it would be in the eighties. Thankfully there are some negative feedbacks that curp the forcing somewhat.
[cite=notrickszone.com]mass pressure (gravity) explanation for variances in planetary temperatures[/quote]
This one is interesting. I might open a thread about it. Though I have a few points, one of them being that this doesn't preclude CO2 as an explanation for heating, as that has already been very much verified as a sound model, is based on very simple assumptions about how infrared light is absorbed and scattered in the atmosphere, which is knowledge we've had down since the thirties. This explanation would still be there, and would still explain a majority of the heating. When I have some free time I'll down into it, and I'll open a post about it.
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