The oceanic sink for anthropogenic CO2 |
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| Authors: | Sabine Christopher L Feely Richard A Gruber Nicolas Key Robert M Lee Kitack Bullister John L Wanninkhof Rik Wong C S Wallace Douglas W R Tilbrook Bronte Millero Frank J Peng Tsung-Hung Kozyr Alexander Ono Tsueno Rios Aida F |
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| Institution: | National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98115, USA. chris.sabine@noaa.gov |
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| 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 (CO2) sink for the period from 1800 to 1994 of 118 +/- 19 petagrams of carbon. The oceanic sink accounts for approximately 48% of the total fossil-fuel and cement-manufacturing emissions, implying that the terrestrial biosphere was a net source of CO2 to the atmosphere of about 39 +/- 28 petagrams of carbon for this period. The current fraction of total anthropogenic CO2 emissions stored in the ocean appears to be about one-third of the long-term potential. |
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