Ammonia photolysis and the greenhouse effect in the primordial atmosphere of the earth

  title={Ammonia photolysis and the greenhouse effect in the primordial atmosphere of the earth},
  author={W. Kuhn and S. Atreya},
Abstract Photochemical calculations indicate that in the prebiotic atmosphere of the Earth ammonia would have been irreversibly converted to N 2 in less than 40 years if the ammonia surface mixing ratio were ≤ 10 −4 . However, if a continuous outgassing of ammonia were maintained, radiative equilibrium calculations indicate that a surface mixing ratio of ammonia of 10 −5 or greater would provide a sufficient greenhouse effect to keep the surface temperature above freezing. With a 10 −4 mixing… Expand

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  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1940
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