TY - GEN
T1 - Numerical modeling for venus atmosphere based on AFES (atmospheric GCM for the earth simulator)
AU - Sugimoto, Norihiko
AU - Takagi, Masahiro
AU - Matsuda, Yoshihisa
AU - Takahashi, Yoshiyuki O.
AU - Ishiwatari, Masaki
AU - Hayashi, Yoshi Yuki
PY - 2012/12/1
Y1 - 2012/12/1
N2 - In order to elucidate phenomena of Venus atmosphere, an atmospheric general circulation model (AGCM) for Venus is being developed on the basis of AFES (AGCM For the Earth Simulator). As a first step toward high resolution numerical simulation with realistic physical processes, we investigate unstable modes on the condition of super-rotation by nonlinear numerical simulation with simplified physical processes. At initial state zonal super-rotation is assumed to exist. We use the relaxation forcing of the meridional temperature gradient to maintain the zonal flow. In the time evolution of this experimental 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. We discuss resolution dependency of the results.
AB - In order to elucidate phenomena of Venus atmosphere, an atmospheric general circulation model (AGCM) for Venus is being developed on the basis of AFES (AGCM For the Earth Simulator). As a first step toward high resolution numerical simulation with realistic physical processes, we investigate unstable modes on the condition of super-rotation by nonlinear numerical simulation with simplified physical processes. At initial state zonal super-rotation is assumed to exist. We use the relaxation forcing of the meridional temperature gradient to maintain the zonal flow. In the time evolution of this experimental 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. We discuss resolution dependency of the results.
KW - Baroclinic instability
KW - Earth Simulator
KW - Geophysical fluid dynamics
KW - Numerical modeling
KW - Planetary sciences
KW - Venus atmosphere
UR - http://www.scopus.com/inward/record.url?scp=84868309136&partnerID=8YFLogxK
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U2 - 10.1007/978-3-642-34396-4_9
DO - 10.1007/978-3-642-34396-4_9
M3 - Conference contribution
AN - SCOPUS:84868309136
SN - 9783642343957
T3 - Communications in Computer and Information Science
SP - 70
EP - 78
BT - System Simulation and Scientific Computing - International Conference, ICSC 2012, Proceedings
T2 - Asia Simulation Conference and the International Conference on System Simulation and Scientific Computing 2012, AsiaSim and ICSC 2012
Y2 - 27 October 2012 through 30 October 2012
ER -