publication . Article . 1988

Runaway and moist greenhouse atmospheres and the evolution of Earth and Venus

James F. Kasting;
Open Access
  • Published: 01 Feb 1988 Journal: Icarus, volume 74, pages 472-494 (issn: 0019-1035, Copyright policy)
  • Publisher: Elsevier BV
A one-dimensional climate model is used to study the response of an Earth-like atmosphere to large increases in solar flux. For fully saturated, cloud-free conditions, the critical solar flux at which a runaway greenhouse occurs, that is, the oceans evaporate entirely, is found to be 1.4 times the present flux at Earth's orbit (S0). This value is close to the flux expected at Venus' orbit early in solar system history. Is is nearly independent of the amount of CO2 present in the atmosphere, but is sensitive to the H2O absorption coefficient in the 8- to 12-micrometers window region. Clouds should tend to depress the surface temperature on a warm, moist planet; t...
arXiv: Astrophysics::Earth and Planetary AstrophysicsPhysics::Atmospheric and Oceanic PhysicsPhysics::Space PhysicsAstrophysics::Solar and Stellar AstrophysicsPhysics::Geophysics
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, Atmosphere of Earth, Atmosphere of Venus, Secondary atmosphere, Runaway greenhouse effect, Venus, biology.organism_classification, biology, Astrobiology, Earth's energy budget, Atmosphere, Atmospheric sciences, Greenhouse effect, Physics
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