The Contemporary and Historical Budget of Atmospheric \(CO_2\)

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The Contemporary and Historical Budget of Atmospheric \(CO_2\)

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Title: The Contemporary and Historical Budget of Atmospheric \(CO_2\)
Author: Huang, Junling; McElroy, Michael Brendon

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Citation: Huang, Junling, and Michael Brendon McElroy. 2012. The contemporary and historical budget of atmospheric \(CO_2\). Canadian Journal of Physics 90(8): 707-716.
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Abstract: Observations of \(CO_2\) and \(O_2\) are interpreted to develop an understanding of the changes in the abundance of atmospheric \(CO_2\) that have arisen over the period 1995–2007. Fossil fuels accounted for an addition of 89.3 Gt of carbon to the atmosphere over this time period, 29% of which was transferred to the ocean, 15% to the global biosphere, with the balance (57%) retained by the atmosphere. Analysis of historical data for \(CO_2\) derived from studies of gases trapped in ice at Law Dome in Antarctica indicate that the biosphere represented a net source of atmospheric \(CO_2\) prior to 1940, switching subsequently to a net sink.
Published Version: doi:10.1139/p2012-033
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at
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