29 Sep '11, 7pm

A Closer Look at CO2’s Long Goodbye:

Regarding the lifetime of CO2 in the atmosphere (comments 1 , 16 -18 ), two different measures are being mixed up. For a particular CO2 molecule, its expected time in the atmosphere before being dissolved into the upper ocean or taken up by the terrestrial biosphere is indeed about 5 years, as confirmed, for example, by the uptake of the extra carbon-14 created by nuclear testing. However, the carbon taken up is not permanently stored. For the terrestrial biosphere, most components (e.g., leaves, grasses, crops, trees, roots, etc.) decay (and more rapidly as temperatures rise) or are harvested and quickly consumed or burned. The higher CO2 concentration does lead to additional uptake where deforestation is not occurring; however, the conversion to long-lived soil carbon is quite slow so additional biospheric disturbance (or a decline in atmospheric CO2) in the future could...

Full article: http://dotearth.blogs.nytimes.com/2011/09/29/a-closer-loo...

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Long John Silver’s Promotion

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long overdue;

long overdue;

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Thank you and goodbye.

Thank you and goodbye.

winnilicious.com 06 Oct '11, 4am

Posted via email from Winnilicious @ Posterous This entry was posted on Thursday, October 6th, 2011 at 12:37 and is filed ...

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Long Champ Pre-order

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