2 papers published today… first…shows, to limit warming below 2C…remove some carbon from the atmosphere, no matter how strongly we reduce emissions… second, shows, even if we can remove enough CO2 to keep warming below 2C…not restore the oceans to state…before altering atmosphere…In IPCC high scenario, RCP8.5, emissions continue to grow from our present rate of 37 billion tonnes of CO2 per year to about 100 billion tonnes of CO2 in 2100, when atmospheric CO2 levels are projected to be 950 ppm. This scenario assumes little mitigation of our carbon emissions…Present emissions are tracking close to the highest scenario (RCP8.5).
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