Liquid water on Mars - an energy balance climate model for CO2/H2O atmospheres

Details Liquid water on Mars - an energy balance climate model for CO2/H2O atmospheres Liquid water on Mars - an energy balance climate model for CO2/H2O atmospheres

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...47..112h&link_type=abstract

Icarus, vol. 47, July 1981, p. 112-129.

Mathematics

Logic

26

Atmospheric Models, Carbon Dioxide, Greenhouse Effect, Hydrology, Mars Atmosphere, Water Vapor, Ammonia, Atmospheric Composition, Energy Budgets, Heat Flux, Planetary Evolution, Solar Flux, Comparisons, Parameters, Bands, Mars, Water, Energy, Climate, Data, Models, Atmosphere, Carbon Dioxide, Surface, Temperatures, Geology, Infrared, Flux, Heat Flow, Insolation, Greenhouse Effect, Wavelengths, Polar Regions, Water Vapor, Opacity, Albedo, Absorption, Emissions, Heat Transfer, Baroclinity, Gradients, Theoreti

Scientific paper

A simple climatic model is developed for a Mars atmosphere containing CO2 and sufficient liquid water to account for the observed hydrologic surface features by the existence of a CO2/H2O greenhouse effect. A latitude-resolved climate model originally devised for terrestrial climate studies is applied to Martian conditions, with the difference between absorbed solar flux and emitted long-wave flux to space per unit area attributed to the divergence of the meridional heat flux and the poleward heat flux assumed to equal the atmospheric eddy heat flux. The global mean energy balance is calculated as a function of atmospheric pressure to assess the CO2/H2O greenhouse liquid water hypothesis, and some latitude-resolved cases are examined in detail in order to clarify the role of atmospheric transport and temperature-albedo feedback. It is shown that the combined CO2/H2O greenhouse at plausible early surface pressures may account for climates hot enough to support a hydrological cycle and running water at present-day insolation and visible albedo levels.

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