Baroclinic modes in the atmosphere on Venus simulated by AFES

Norihiko Sugimoto; Masahiro Takagi; Yoshihisa Matsuda; Yoshiyuki O. Takahashi; Masaki Ishiwatari; Yoshi Yuki Hayashi

Baroclinic modes in the atmosphere on Venus simulated by AFES

Norihiko Sugimoto, Masahiro Takagi, Yoshihisa Matsuda, Yoshiyuki O. Takahashi, Masaki Ishiwatari, Yoshi Yuki Hayashi

Faculty of Law

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

An atmospheric general circulation model (AGCM) for Venus is being developed on the basis of AFES (AGCM For the Earth Simulator) in order to study atmospheric phenomena of Venus by the numerical simulation with high resolution. Super-rotation is assumed to exist at initial state and to be maintained by the relaxation forcing due to the meridional temperature gradient. In the time evolution of this setting, baroclinic modes grow in the cloud layer with small static stability. The structures of unstable modes are similar to those obtained in the linear stability analysis initially, but changed by the nonlinear interactions in the later stage. Meridional transport of momentum and heat by these unstable inodes is discussed.

Original language	English
Pages (from-to)	11-21
Number of pages	11
Journal	Theoretical and Applied Mechanics Japan
Volume	61
Publication status	Published - 2013

ASJC Scopus subject areas

Mathematics(all)
Condensed Matter Physics
Mechanics of Materials

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abstract = "An atmospheric general circulation model (AGCM) for Venus is being developed on the basis of AFES (AGCM For the Earth Simulator) in order to study atmospheric phenomena of Venus by the numerical simulation with high resolution. Super-rotation is assumed to exist at initial state and to be maintained by the relaxation forcing due to the meridional temperature gradient. In the time evolution of this setting, baroclinic modes grow in the cloud layer with small static stability. The structures of unstable modes are similar to those obtained in the linear stability analysis initially, but changed by the nonlinear interactions in the later stage. Meridional transport of momentum and heat by these unstable inodes is discussed.",

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AU - Sugimoto, Norihiko

AU - Takagi, Masahiro

AU - Matsuda, Yoshihisa

AU - Takahashi, Yoshiyuki O.

AU - Ishiwatari, Masaki

AU - Hayashi, Yoshi Yuki

PY - 2013

Y1 - 2013

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AB - An atmospheric general circulation model (AGCM) for Venus is being developed on the basis of AFES (AGCM For the Earth Simulator) in order to study atmospheric phenomena of Venus by the numerical simulation with high resolution. Super-rotation is assumed to exist at initial state and to be maintained by the relaxation forcing due to the meridional temperature gradient. In the time evolution of this setting, baroclinic modes grow in the cloud layer with small static stability. The structures of unstable modes are similar to those obtained in the linear stability analysis initially, but changed by the nonlinear interactions in the later stage. Meridional transport of momentum and heat by these unstable inodes is discussed.

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