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Science 10 January 2003:
Vol. 299. no. 5604, pp. 235 - 239
DOI: 10.1126/science.1077429
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Reports
Anthropogenic CO2 Uptake by the Ocean Based on the Global Chlorofluorocarbon Data Set
Ben I. McNeil,1*
Richard J. Matear,2
Robert M. Key,1
John L. Bullister,3
Jorge L. Sarmiento1
We estimated the oceanic inventory of anthropogenic carbon dioxide
(CO2) from 1980 to 1999 using a technique based on
the global chlorofluorocarbon data set. Our analysis suggests that the
ocean stored 14.8 petagrams of anthropogenic carbon from mid-1980 to
mid-1989 and 17.9 petagrams of carbon from mid-1990 to mid-1999, indicating an oceanwide net uptake of 1.6 and 2.0 ± 0.4 petagrams of carbon per year, respectively. Our results provide an upper limit on
the solubility-driven anthropogenic CO2 flux into the ocean, and they suggest that most ocean general circulation models are
overestimating oceanic anthropogenic CO2 uptake over the
past two decades.
1 Atmospheric and Oceanic Science Program,
Princeton University, Princeton, NJ 08544, USA.
2 Commonwealth Scientific and Industrial Research
Organisation Marine Research and the Antarctic Co-operative Research
Centre, Hobart, Tasmania, Australia.
3 Pacific
Marine Environmental Laboratory, National Oceanic and Atmospheric
Administration, Seattle, WA 98115, USA.
*
To whom correspondence should be addressed.
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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
- From the Cover: Contributions to accelerating atmospheric CO2 growth from economic activity, carbon intensity, and efficiency of natural sinks.
- J. G. Canadell, C. Le Quere, M. R. Raupach, C. B. Field, E. T. Buitenhuis, P. Ciais, T. J. Conway, N. P. Gillett, R. A. Houghton, and G. Marland (2007)
PNAS
104, 18866-18870
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- An estimate of anthropogenic CO2 inventory from decadal changes in oceanic carbon content.
- T. Tanhua, A. Kortzinger, K. Friis, D. W. Waugh, and D. W. R. Wallace (2007)
PNAS
104, 3037-3042
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