The Oceanic Sink for Anthropogenic CO 2

Author:

Sabine Christopher L.12345,Feely Richard A.12345,Gruber Nicolas12345,Key Robert M.12345,Lee Kitack12345,Bullister John L.12345,Wanninkhof Rik12345,Wong C. S.12345,Wallace Douglas W. R.12345,Tilbrook Bronte12345,Millero Frank J.12345,Peng Tsung-Hung12345,Kozyr Alexander12345,Ono Tsueno12345,Rios Aida F.12345

Affiliation:

1. National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98115, USA.

2. University of California–Los Angeles, Institute of Geophysics and Planetary Physics and Department of Atmospheric and Oceanic Sciences, Los Angeles, CA 90095, USA.

3. Princeton University, Program in Atmospheric and Oceanic Science, Forrestal Campus/Sayre Hall, Princeton, NJ 08544, USA.

4. Pohang University of Science and Technology, San 31, Nam-gu, Hyoja-dong, Pohang 790-784, South Korea.

5. NOAA Atlantic Oceanographic and Meteorological Laboratory, 4301 Rickenbacker Causeway, Miami, FL 33149, USA.

Abstract

Using inorganic carbon measurements from an international survey effort in the 1990s and a tracer-based separation technique, we estimate a global oceanic anthropogenic carbon dioxide (CO 2 ) sink for the period from 1800 to 1994 of 118 ± 19 petagrams of carbon. The oceanic sink accounts for ∼48% of the total fossil-fuel and cement-manufacturing emissions, implying that the terrestrial biosphere was a net source of CO 2 to the atmosphere of about 39 ± 28 petagrams of carbon for this period. The current fraction of total anthropogenic CO 2 emissions stored in the ocean appears to be about one-third of the long-term potential.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference27 articles.

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3. C. Prenticeet al., in Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change, J. T. Houghton et al., Eds. (Cambridge Univ. Press, New York, 2001), pp. 183–237.

4. D. W. R. Wallace, in Ocean Circulation and Climate, G. Siedler, J. Church, W. J. Gould, Eds. (Academic Press, San Diego, CA, 2001), pp. 489–521.

5. R. M. Key et al . in preparation.

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