Coupling of surface temperatures and atmospheric CO2 concentrations during the Palaeozoic era

@article{Came2007CouplingOS,
  title={Coupling of surface temperatures and atmospheric CO2 concentrations during the Palaeozoic era},
  author={Rosemarie E. Came and John M. Eiler and J{\'a}n Veizer and Karem Azmy and Uwe Brand and Christopher R. Weidman},
  journal={Nature},
  year={2007},
  volume={449},
  pages={198-201}
}
Atmospheric carbon dioxide concentrations seem to have been several times modern levels during much of the Palaeozoic era (543–248 million years ago), but decreased during the Carboniferous period to concentrations similar to that of today. Given that carbon dioxide is a greenhouse gas, it has been proposed that surface temperatures were significantly higher during the earlier portions of the Palaeozoic era. A reconstruction of tropical sea surface temperatures based on the δ18O of carbonate… CONTINUE READING

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