Footprint of multi-equilibrium states in a venusian atmospheric general circulation model

Atsushige Kido, Yoshinobu Wakata

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We investigated the possibility of multiple equilibrium states in the atmospheric general circulation of Venus using Venus-like AGCM. We ran the model from two initial conditions. For a zero zonal wind initial condition, super-rotation is not reproduced and slow rotation appears. In a case with large zonal wind, increasing linearly with height initial condition, quasi-steady super-rotation with about 90 ms-1 zonal wind is reproduced. However, this state suddenly collapsed and settled to slow rotation, which suggests the existence of a footprint of the equilibrium state with super-rotation in addition to the slow-rotation state in the solution space, along with the possibility of multiple equilibrium states. Results show that the wave with wavenumber one controls this collapse of super-rotation.

Original languageEnglish
Pages (from-to)343-355
Number of pages13
JournalTheoretical and Applied Mechanics Japan
Volume56
DOIs
Publication statusPublished - Jan 1 2008

Fingerprint

superrotation
Atmospheric General Circulation Models
footprints
Equilibrium State
Venus (planet)
Multiple Equilibria
Initial conditions
Model
Linearly
Zero

All Science Journal Classification (ASJC) codes

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

Cite this

Footprint of multi-equilibrium states in a venusian atmospheric general circulation model. / Kido, Atsushige; Wakata, Yoshinobu.

In: Theoretical and Applied Mechanics Japan, Vol. 56, 01.01.2008, p. 343-355.

Research output: Contribution to journalArticle

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