Space/Science — HabitableZone

Space/Science » in reply to It must be desperately important to you that CO2 not have anything to to do with global warming, isn't it?

re: CO2 and global warming
TB — (archived)

As yet, while I have seen plenty of evidence over the past 500,000 year record that CO2 and temperature are related, nobody has yet convinced me which is cause and which is effect. At these time scales, the curves match too closely and there's too much error.

I can think of a lot of mechanisms, mostly astronomical, that might make temperature changes on a regular cycle. I can't think of many that would do the same for CO2 levels.

I will concede that on the up end of a cycle, there is probably some greenhouse feedback, but obviously it isn't a runaway feedback, since the cycles all end up going back down again.

I don't think anybody is claiming that CO2 has "nothing" to do with temperature, but how much is due to it is an important question, before we decide to turn over industrial civilization to those who have never had a warm place in their hearts for it.

http://www.daviesand.com/Choices/Precautionary_Planning/New_Data/IceCores1.gif

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