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Actually, I believe that is incorret. I think it is more like 1,000 years, except for the rock cycle portion, which is not really what we are talking about here. But even at 1,000 years, it doesn't get you where you want to go, because they simply means that the dwell time is that much longer. The fact is (and this is confirmed by the Hawaii data) that we are pumping more CO2 into the atmosphere each year than the carbon cycle can take out. That is why we are seeing a steady increase in atmospheric concentrations.

[QUOTE="orogenicman, post: 144642, member: 2797"] Actually, I believe that is incorret. I think it is more like 1,000 years, except for the rock cycle portion, which is not really what we are talking about here. But even at 1,000 years, it doesn't get you where you want to go, because they simply means that the dwell time is that much longer. The fact is (and this is confirmed by the Hawaii data) that we are pumping more CO2 into the atmosphere each year than the carbon cycle can take out. That is why we are seeing a steady increase in atmospheric concentrations. [/QUOTE]

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