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

Masaru Yamamoto, Masaaki Takahashi

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

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.

Original languageEnglish
JournalGeophysical Research Letters
Volume31
Issue number9
DOIs
Publication statusPublished - May 16 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'Dynamics of Venus' superrotation: The eddy momentum transport processes newly found in a GCM'. Together they form a unique fingerprint.

Cite this