Modeling the seasonal cycle of CO2 on Mars: A fit to the Viking lander pressure curves

Details Modeling the seasonal cycle of CO2 on Mars: A fit to the Viking lander pressure curves Modeling the seasonal cycle of CO2 on Mars: A fit to the Viking lander pressure curves

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992msat.work..167w&link_type=abstract

In Lunar and Planetary Inst., Workshop on the Martian Surface and Atmosphere Through Time p 167-168 (SEE N92-28988 19-91)

Computer Science

Atmospheric Composition, Atmospheric Effects, Carbon Dioxide, Climate, Conductive Heat Transfer, Cycles, Heat Balance, Mars (Planet), Mars Atmosphere, Mars Surface, Seasons, Viking Lander Spacecraft, Daytime, Dust Storms, Elevation, Latent Heat, Latitude, Occultation

Scientific paper

We have constructed a more accurate Mars thermal model, similar to the one used by Leighton and Murray in 1966, which solves radiative, conductive, and latent heat balance at the surface as well as the one-dimensional heat conduction equation for 40 layers to a depth of 15 meters every 1/36 of a Martian day. The planet is divided into 42 latitude bands with a resolution of two degrees near the poles and five degrees at lower latitudes, with elevations relative to the 6.1 mbar reference areoid. This estimate of the Martian zonally averaged topography was derived primarily from radio occultations. We show that a realistic one-dimensional thermal model is able to reproduce the VL1 pressure curve reasonably well without having to invoke complicated atmospheric effects such as dust storms and polar hoods. Although these factors may cause our deduced values for each model parameter to differ from its true value, we believe that this simple model can be used as a platform to study many aspects of the Martian CO2 cycle over seasonal, interannual, and long-term climate timescales.

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