Articles | Volume 16, issue 3
https://doi.org/10.5194/bg-16-831-2019
https://doi.org/10.5194/bg-16-831-2019
Research article
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14 Feb 2019
Research article | Highlight paper |  | 14 Feb 2019

Towards a more complete quantification of the global carbon cycle

Miko U. F. Kirschbaum, Guang Zeng, Fabiano Ximenes, Donna L. Giltrap, and John R. Zeldis

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Latest update: 17 Jun 2024
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Short summary
Globally, C is added to the atmosphere from fossil fuels and deforestation, balanced by ocean uptake and atmospheric increase. The difference (residual sink) is equated to plant uptake. But this omits cement carbonation; transport to oceans by dust; riverine organic C and volatile organics; and increased C in plastic, bitumen, wood, landfills, and lakes. Their inclusion reduces the residual sink from 3.6 to 2.1 GtC yr-1 and thus the inferred ability of the biosphere to alter human C emissions.
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