Theoretical constraints on oxygen and carbon dioxide concentrations in the Precambrian atmosphere.

@article{Kasting1987TheoreticalCO,
  title={Theoretical constraints on oxygen and carbon dioxide concentrations in the Precambrian atmosphere.},
  author={James F Kasting},
  journal={Precambrian research},
  year={1987},
  volume={34},
  pages={205-29}
}
Simple (one-dimensional) climate models suggest that carbon dioxide concentrations during the Archean must have been at least 100-1000 times the present level to keep the Earth's surface temperature above freezing in the face of decreased solar luminosity. Such models provide only lower bounds on CO2, so it is possible that CO2 levels were substantially higher than this and that the Archean climate was much warmer than today. Periods of extensive glaciation during the early and late Proterozoic… CONTINUE READING
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