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gfdl's home page > gfdl on-line bibliography > 2003: Geophysical Research Letters, 30(1), 1010, 10.1029/2002GL015594
A first estimate of present and preindustrial air-sea (CO2 flux patterns based on ocean interior carbon measurements and models
| Gloor, M., N. Gruber, J. Sarmiento, C. L. Sabine, R. A. Feely, and C. Rödenbeck, 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(1), 1010, 10.1029/2002GL015594. |
| Abstract: 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 preindiustrial 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 sourhtern 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. |