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Detailed Reference Information |
Gloor, M., Gruber, N., Sarmiento, J., Sabine, C.L., Feely, R.A. and Rödenbeck, C. (2003). A first estimate of present and preindustrial air-sea CO2 flux patterns based on ocean interior carbon measurements and models. Geophysical Research Letters 30: doi: 10.1029/2002GL015594. issn: 0094-8276. |
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The exchange of CO2 across the air-sea interface is a main determinant of the distribution of atmospheric CO2 from which major conclusions about the carbon cycle are drawn, yet our knowledge of atmosphere-ocean fluxes still has major gaps. A new analysis based on recent ocean dissolved inorganic carbon data and on models permits us to separately estimate the preindustrial and present air-sea CO2 flux distributions without requiring knowledge of the gas exchange coefficient. We find a smaller carbon sink at mid to high latitudes of the southern hemisphere than previous data based estimates and a shift of ocean uptake to lower latitude regions compared to estimates and simulations. The total uptake of anthropogenic CO2 for 1990 is 1.8 (¿0.4) Pg C yr-1. Our ocean based results support the interpretation of the latitudinal distribution of atmospheric CO2 data as evidence for a large northern hemisphere land carbon sink. |
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BACKGROUND DATA FILES |
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Abstract |
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Keywords
Oceanography, Biological and Chemical, Carbon cycling, Oceanography, Biological and Chemical, Biogeochemical cycles, Global Change, Oceans, Oceanography, Biological and Chemical, Modeling |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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