Ozone and life on the Archaean Earth

  title={Ozone and life on the Archaean Earth},
  author={Charles S. Cockell and John A. Raven},
  journal={Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences},
  pages={1889 - 1901}
  • C. Cockell, J. Raven
  • Published 15 July 2007
  • Environmental Science
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
The trace gas ozone, produced in the present-day stratosphere, acts as a screen for UV radiation between 195 and approximately 290 nm, depending on its column abundance. On the anoxic Archaean Earth, such an ozone screen would not have existed. Although the presence of other screens, such as an organic haze, might have ameliorated the UV radiation flux, even assuming the worst-case scenario (no UV screen), it can be shown that early land masses and the photic zone of the oceans could have been… 

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