Dynamics of Venus' superrotation: The eddy momentum transport processes newly found in a GCM

Masaru Yamamoto, Masaaki Takahashi

研究成果: Contribution to journalArticle査読

43 被引用数 (Scopus)

抄録

A 4-day superrotation 60-times faster than the planetary rotation (243 days) is observed in Venus' atmosphere. Although it has been difficult to reproduce the extraordinary phenomenon in GCMs, the superrotation is reproduced by meridional circulation and planetary-scale waves with phase velocities slower than 50 m s-1 in our improved GCM. Thermally induced waves produce equatorward momentum fluxes in the middle atmosphere, while the planetary-scale pattern of two different gravity and Rossby waves with the same frequency is found to produce the equatorward momentum flux in the lower atmosphere. These processes play crucial roles in dynamics of the simulated Venus superrotation.

本文言語英語
ジャーナルGeophysical Research Letters
31
9
DOI
出版ステータス出版済み - 5 16 2004
外部発表はい

All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学(全般)

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