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  • Article
  • Open Access

A numerical study of the Martian atmospheric convection with a two-dimensional anelastic model

  • 1Email author,
  • 2,
  • 2,
  • 3 and
  • 1
Earth, Planets and Space201450:BF03352130

https://doi.org/10.1186/BF03352130

  • Received: 2 August 1997
  • Accepted: 26 February 1998
  • Published:

Abstract

Thermal convection of the Martian lower atmosphere is examined by the use of a two-dimensional anelastic model with a resolution fine enough to describe convection eddies.

For a homogeneous radiative cooling of 50 K/day given in the layer below 5 km, a layer of time-dependent convection develops up to about 6 km in height. The intensity of realized vertical winds ranges up to 20 m/s. The dust, which is injected into the lowest layer and treated as a passive tracer, is transported immediately in the convection layer and mixed uniformly.

The intensity of the horizontal winds near the surface reaches about 10 m/s, which, combined with large-scale motions, is expected to contribute to the dust injection into the atmosphere.

Keywords

  • Dust
  • Convection
  • Potential Temperature
  • Dust Storm
  • Thermal Boundary Layer

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