Our climate fix must be big and quick

Details Our climate fix must be big and quick Our climate fix must be big and quick

2008-10-13

arxiv.org/abs/0810.2275v1

Physics

Atmospheric and Oceanic Physics

Scientific paper

We need enough new carbon sinks to 1) cancel out any continuing use of fossil fuels, 2) overcome the delayed effect of earlier excesses, and then 3) lower atmospheric CO2 concentrations to the old maximum value of 280 ppm. We need to sink about 25 billion tonnes of carbon each year, half to counter current emissions and commitments, and half for drawing down the CO2 concentrations within a few decades. A very large carbon sink could be created by sinking sewage in offshore dead zones. Half of all people live close enough to a coast to personally contribute, making the sink size close to half the annual food production.

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