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5. Discussion

Based on the results of our numerical simulations presented so far, we now discuss the following issues. Since the observation of wind and temperature by the Viking lander was performed at the height of 1.6 m, it may be informative to compare them with the data obtained at the lowest level of our numerical model (about 1.5 m height). Our numerical simulations show that surface wind associated with the km-size thermal convection of the dust-free case can raise dust from the surface. We can suggest that, it is necessary to incorporate the effect of the km-size thermal convection into a Martian GCM to improve it to be more like that of the Mars, i.e., with the emergences of dust storms.

  1. Comparison with the observation results
  2. Treatment of convection in a GCM



A numerical simulation of thermal convection in the Martian lower atmosphere.
Odaka, Nakajima, Ishiwatari, Hayashi,   Nagare Multimedia 2001
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