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Here's the latest on carbon dioxide uptake from NOAA. It says you're too pessimistic, BJ.
Natural sinks still sopping up carbon


Here is a quick calculation showing how much CO2 is being taken up by the sinks. NOAA measures the atmospheric CO2 on a molar basis (moles of CO2 per mole of dry air).

NASA says the total mass of the atmosphere is 5.1E18 kg, or 5.1E21 g.

With a molecular weight of 29, there are 1.759E20 moles of air in the atmosphere.

The world has been putting over 30 billion tonnes of CO2 into the atmosphere every year. In 2010, it was 31.78E9 tonnes, or 3.178E16 g.

This is 7.22E14 moles of CO2.

7.22E14/1.759E20 = 4.1E-6 or 4.1 ppm

The measured increase in CO2 has been going up about 2 ppm per year.

So, about 50% of the CO2 gets taken up by trees, the ocean, etc. The 2012 CO2 production has been estimated at 35 billion tonnes. We should see in a few months what the final number is.

Speaking of being overly optimistic, isn't it rather silly to think that the trend of CO2 increase can be slowed or stopped by putting up a few windmills, solar panels, and driving a Prius?

- Pete
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