Simulations of superrotation using a GCM for Venus' middle atmosphere

Masaru Yamamoto, Masaaki Takahashi

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

A superrotation is simulated in a T10L100 general circulation model for Venus' middle atmosphere (VMAGCM), in which the radiative effects of aerosols are calculated. The simulation in a domain of 30-100 km is conducted under the condition of a bottom zonal flow with a velocity of 50 m s-1 at the equator. Thermal tides contribute to the maintenance of the cloud-top superrotation together with meridional circulation and vertically propagating gravity waves. The meridional circulation and wave activity are sensitive to the vertical eddy diffusion. Although the equatorial zonal flow has a velocity of about 70 m s-1 when the vertical eddy diffusion coefficient (KV) is set at 5.0 m s-2, it has a velocity of > 100 m s-1 when KV = 2.5 M s-2. The fully developed equatorial jet for the small KV case is enhanced at 65 km by small-scale gravity waves emitted from the cloud top.

元の言語英語
ページ(範囲)971-979
ページ数9
ジャーナルearth, planets and space
59
発行部数8
DOI
出版物ステータス出版済み - 1 1 2007

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superrotation
middle atmosphere
Venus (planet)
Venus
general circulation model
turbulent diffusion
zonal flow
meridional circulation
gravity waves
gravity wave
eddy
simulation
tides
equators
maintenance
aerosols
tide
diffusion coefficient
aerosol

All Science Journal Classification (ASJC) codes

  • Geology
  • Space and Planetary Science

これを引用

Simulations of superrotation using a GCM for Venus' middle atmosphere. / Yamamoto, Masaru; Takahashi, Masaaki.

:: earth, planets and space, 巻 59, 番号 8, 01.01.2007, p. 971-979.

研究成果: ジャーナルへの寄稿記事

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