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

Masatsugu Odaka, Kensuke Nakajima, Shin Ichi Takehiro, Masaki Ishiwatari, Yoshi Yuki Hayashi

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10 Citations (Scopus)

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 5km, a layer of time-dependent convection develops up to about 6km 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.

Original languageEnglish
Pages (from-to)431-437
Number of pages7
Journalearth, planets and space
Volume50
Issue number5
DOIs
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Geology
  • Space and Planetary Science

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