Atmospheric Evolution and UV-B Radiation

  • Richard S. Stolarski
Part of the NATO Conference Series book series (NATOCS, volume 7)


The evolutionary role of ozone has potentially significant implications for the evaluation of the sensitivity of present ecosystems to ultraviolet radiation changes. The literature on the evolution of atmospheric oxygen and ozone is reviewed indicating that current understanding has the oxygen content of the atmosphere near zero until about 2 x 109 years ago when it rose rapidly to a significant fraction of its current value. Two qualitatively different results appear in the literature for the variation of ozone as 02 increases; (1) a constant rise from smaller values to a maximum at the present amount and (2) a peak at.1 times the present 02 level followed by a gradual decrease until the present level is reached. This discrepancy now seems to be resolved in favor of (1).


Free Oxygen Planetary Atmosphere Evolutionary Role Atmospheric Ozone NATO Advance Study Institute 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Richard S. Stolarski
    • 1
  1. 1.Laboratory for Planetary Atmospheres Atmospheric Chemistry BranchNASA/Goddard Space Flight CenterGreenbeltUSA

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