Influences of Venus’ topography on fully developed superrotation and near-surface flow

Masaru Yamamoto, Masaaki Takahashi

研究成果: ジャーナルへの寄稿レター

7 引用 (Scopus)

抄録

We investigate the influence of topography on Venus’ atmospheric general circulation. Based on comparative simulations with and without the Venusian topography, we elucidate the role of the topography in the fully developed superrotation. Orographically forced stationary waves are predominant over Mt. Maxwell: slightly weakening the superrotation near the cloud top. Differently from previous GCM results, the orographically forced waves do not produce significant asymmetry between the northern and southern hemispheric superrotations in the present model. Weak surface flows from mountains to lowlands are caused by the pressure dependence of the Newtonian cooling. The pattern and magnitude of the near-surface flow are largely different from those simulated in the Herrnstein and Dowling (2007) model. This implies that the parameterizations of physical processes (such as Newtonian cooling, turbulence, diffusion, and surface drag) and the model resolution could significantly influence the pattern and magnitude of the near-surface flow and the orographical forcing of planetary-scale stationary waves.

元の言語英語
ページ(範囲)e45-e48
ジャーナルEarth, Planets and Space
61
発行部数10
DOI
出版物ステータス出版済み - 10 1 2009

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superrotation
Venus (planet)
Venus
topography
standing wave
cooling
parameterization
mountains
pressure dependence
drag
general circulation model
asymmetry
turbulence
mountain
simulation

All Science Journal Classification (ASJC) codes

  • Geology
  • Space and Planetary Science

これを引用

Influences of Venus’ topography on fully developed superrotation and near-surface flow. / Yamamoto, Masaru; Takahashi, Masaaki.

:: Earth, Planets and Space, 巻 61, 番号 10, 01.10.2009, p. e45-e48.

研究成果: ジャーナルへの寄稿レター

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