Photochemical consequences of enhanced CO2 levels in Earth's early atmosphere.

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Abstract

Greatly enhanced atmospheric CO2 concentrations are the most likely mechanism for offsetting the effects of reduced solar luminosity early in the earth's history. CO2 levels of 80 to 600 times the present value could have maintained a mean surface temperature of 0oC to 15oC, given a 25% decrease in solar output. Such high CO2 levels are at least qualitatively consistent with out present understanding of the carbonate- silicate geochemical cycle. -from Author

Original languageEnglish (US)
Pages (from-to)612-622
Number of pages11
JournalUnknown Journal
StatePublished - Jan 1 1985

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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