Why does atmospheric carbon dioxide concentration vary seasonally?

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akshay

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akshay asked the Naked Scientists:
   
The CO2 level in September is low. Why?

What do you think?
« Last Edit: 28/06/2010 19:30:02 by _system »

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Offline frethack

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Increases in bio-productivity (especially in soils)  oceanic outgassing (as well as karstic outgassing, but this is comparatively minor),  and increases in rates of weathering are all much higher during the warmer months, and all produce excess CO2.

There are probably a thousand more reasons.
frethack

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