主成分の凝結を伴う大気対流の二次元数値実験(対流・拡散・渦・波動対流(1),一般講演)

概要

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A 2D non-hydrostatic model to simulate atmospheric convection with condensation of major component is developed. We use quasi-compressible equations with taking cloud particles growth by diffusion process into account. Horizontally uniform body heating/cooling is introduced instead of explicite calculation of the atmospheric radiative transfer. As initial temperature profile, we choose profile of Martian polar cap. For the case with critical saturation ratio (S_<cr>) of 1.35 without falling of cloud particle, after 30 day integration, quasi-equilibrium state is realized. In this state, region above 1km height is covered with clouds. In case with S_<cr>=1.0 without falling of cloud particle, no quasi-equilibrium state seem to be realized. In cases of S_<cr>=1.0, and 1.35 with falling of cloud particle, quasi-equilibrium states seem to exist, which will be confirmed with further time integrations. The results for cases without falling of cloud particle suggest that structure of cloud convection is significantly changed according to the value of S_<cr>.
日本流体力学会の論文
2009-09-02