Roles of atmospheric waves in Venus' superrotation: Results of a Venus-like GCM for a 3D thermal forcing

Masaru Yamamoto, Masaaki Takahashi

Research output: Contribution to journalArticle

Abstract

Superrotation of more than 100 m s-1 is formed at 60 km in a Venus-like general circulation model (Venus-like GCM) driven by a three-dimensional (3D) heating with a 117-day period. Meridional circulation efficiently pumps up angular momentum from the surface to the cloud-top level (65-70 km) as expected from the Gierasch mechanism. Thermally-forced or enhanced waves with zonal wavenumbers of 1 and 2 produce equatorward eddy momentum fluxes, being possible candidates for the equatorward momentum flux caused by large horizontal diffusion in the Gierasch mechanism.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalTheoretical and Applied Mechanics Japan
Volume51
Publication statusPublished - Dec 1 2002
Externally publishedYes

Fingerprint

superrotation
Venus (planet)
Forcing
Momentum
Fluxes
Boiler circulation
momentum
Angular momentum
Angular Momentum
Pump
Heating
Horizontal
angular momentum
Pumps
vortices
pumps
Three-dimensional
heating
Model
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

Roles of atmospheric waves in Venus' superrotation : Results of a Venus-like GCM for a 3D thermal forcing. / Yamamoto, Masaru; Takahashi, Masaaki.

In: Theoretical and Applied Mechanics Japan, Vol. 51, 01.12.2002, p. 225-230.

Research output: Contribution to journalArticle

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