Coupled Models of Geochemical Cycles and Climate
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Coupled Models of Geochemical Cycles and Climate                                Global models of climate and geochemistry must be integrated               in order to understand geochemical cycles.  Operated                            independently, these models have made concordant predictions of                 paleoenvironmental conditions.  Yet in nature, the  are                         dynamically coupled.  Climate is a function of the CO2 content of               the atmosphere, which is controlled over millions of years by the               balance of production during the decarbonation of sedimentary                   rocks and consumption during crustal weathering.  Weathering                    rates, on the other hand, are dependent on temperature and                      rainfall.  The modelling will address the nature and impact of                  this coupling.                                                                       The first year will study the effect of climate on chemical                weathering rates.  In the second year a weathering rate subroutine              will be integrated with the climate model, a equilibrium CO2                    pressure calculated, with the objective of analyzing the                        importance of feedbacks and relationships between climate,                      weathering, and atmospheric CO2.
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