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Originally Posted by dalem
And all previous warming and cooling periods evidenced in the historical and geologic records have nothing to do with human-produced CO2. So pinning this particular cycle on our smokestacks is weak.
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The difference is that previous trends were gradual and much less severe than the current trend, which correlates with human CO2 production. Specifically, this is the graph I am referring to:
If you talk about the natural environment at a stable feedback system, then you would assume that the pattern of warming and cooling would repeat itself within a set of boundaries. However, it is clear that current CO2 emissions have escaped the previous boundary conditions. So we don't know if the system is stable under these parameters.
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Originally Posted by dalem
No, we can't, not appreciably. And the oceans will take C02 into solution as they have always done - naturally.
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Sure we can make changes to reduce CO2. We can reduce our output of it, and we can dissolve it in the ocean. There was an article in Scientific American about how we could do this a few months ago. I'll have to go look at the article again.
I know that we could help grow more algae in the oceans, but this might have other significant consequences that we should investigate first.