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      Phanerozoic atmospheric CO2 change: evaluating geochemical and paleobiological approaches

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      Earth-Science Reviews
      Elsevier BV

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          Observational contrains on the global atmospheric co2 budget.

          Observed atmospheric concentrations of CO(2) and data on the partial pressures of CO(2) in surface ocean waters are combined to identify globally significant sources and sinks of CO(2). The atmospheric data are compared with boundary layer concentrations calculated with the transport fields generated by a general circulation model (GCM) for specified source-sink distributions. In the model the observed north-south atmospheric concentration gradient can be maintained only if sinks for CO(2) are greater in the Northern than in the Southern Hemisphere. The observed differences between the partial pressure of CO(2) in the surface waters of the Northern Hemisphere and the atmosphere are too small for the oceans to be the major sink of fossil fuel CO(2). Therefore, a large amount of the CO(2) is apparently absorbed on the continents by terrestrial ecosystems.
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            A negative feedback mechanism for the long-term stabilization of Earth's surface temperature

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              The carbonate-silicate geochemical cycle and its effect on atmospheric carbon dioxide over the past 100 million years

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                Author and article information

                Journal
                Earth-Science Reviews
                Earth-Science Reviews
                Elsevier BV
                00128252
                August 2001
                August 2001
                : 54
                : 4
                : 349-392
                Article
                10.1016/S0012-8252(00)00042-8
                5479f020-8786-4a3e-9cc9-7f510af83611
                © 2001

                http://www.elsevier.com/tdm/userlicense/1.0/

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