A ‘snowball Earth’ climate triggered by continental break-up through changes in runoff

  title={A ‘snowball Earth’ climate triggered by continental break-up through changes in runoff},
  author={Yannick Donnadieu and Yves Godd{\'e}ris and Gilles Ramstein and Anne N{\'e}d{\'e}lec and Joseph G. Meert},
Geological and palaeomagnetic studies indicate that ice sheets may have reached the Equator at the end of the Proterozoic eon, 800 to 550 million years ago, leading to the suggestion of a fully ice-covered ‘snowball Earth’. Climate model simulations indicate that such a snowball state for the Earth depends on anomalously low atmospheric carbon dioxide concentrations, in addition to the Sun being 6 per cent fainter than it is today. However, the mechanisms producing such low carbon dioxide… 
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