37th DPS Meeting, 4-9 September 2005
Session 33 Mars' Atmosphere
Poster, Tuesday, September 6, 2005, 6:00-7:15pm, Music Recital Room

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[33.14] Water In Mars Atmosphere-Regolith Model

A. Akingunola, J.C. McConnell (York University)

The Global Mars Multiscale Model (GM3) (Moudden and McConnell, 2005) has been extended to include improvements to the boundary layer scheme, atmospheric CO2 condensation/sublimation, and water vapour processes. The boundary layer improvements consist of a multi-layer soil model, a surface layer parameterization based on the Monin-Obhukov similarity theory, and PBL turbulent fluxes parametrization using the K-theory. Under stable conditions, the turbulent fluxes are related to the local Richardson number, while allowing for counter-gradient fluxes following Deardoff for unstable conditions. The effect of the seasonal CO2 phase change on the Martian atmosphere has also been modeled. Results of the model validation against the Viking data will be presented.

We will also present results on the ongoing work on water vapour transport in the atmosphere of Mars. The model of the water vapour cycle currently includes the evaporation and condensation from the water polar caps, interaction with the regolith, atmospheric transport and photochemistry. Size distributed aerosols and cloud will be added in the near future.

Moudden, Y., and J. C. McConnell, A New model for Multiscale Modeling of the Martian Atmosphere, GM3, J. Geophy. Res., 2005 (accepted)

The author(s) of this abstract have provided an email address for comments about the abstract: deji@nimbus.yorku.ca

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