Temperatures in a runaway greenhouse on the evolving Venus Implications for water loss

Details Temperatures in a runaway greenhouse on the evolving Venus Implications for water loss Temperatures in a runaway greenhouse on the evolving Venus Implications for water loss

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984e%26psl..68....1w&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 68, no. 1, April 1984, p. 1-6.

Computer Science

10

Atmospheric Temperature, Greenhouse Effect, Planetary Evolution, Planetary Temperature, Venus Atmosphere, Water, Albedo, Carbon Dioxide, Deuterium, Hydrogen, Lower Atmosphere, Pressure Distribution, Temperature Profiles, Upper Atmosphere, Venus, Temperature, Thermal Properties, Greenhouse Effect, Evolution, Water, Outgassing, Comparisons, Atmosphere, Structure, Calculations, Condensation, Clouds, Formation, Altitude, Models, Hypotheses, Saturation, Surface, Oxygen, Dissociation

Scientific paper

The authors use a one-dimensional calculation to investigate temperatures in the "runaway greenhouse" which may have ensued if Venus once had more than a few percent of the earth's water complement. They find that the atmosphere must exhibit an unusual structure, with condensation and presumably cloud formation taking place at high altitudes, while deep in the atmosphere the gas is strongly unsaturated with respect to water vapour. The necessity of including clouds introduces considerable uncertainty into the calculation of surface temperatures. However, for certain reasonable values of the cloud parameters, very high temperatures can be sustained, approaching the temperature of the basalt solidus.

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