局地循環モデルを用いた火星における人工閉鎖環境の気象要素の検証

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This study presents an artificial closed system (Arais Mars Eco-systems Dome, AMED), which provides a suitable climate for habitation on Mars. We ran some numerical experiments using a Local Circulation Model in order to determine the most suitable structure of the AMED for a climate close to our terrestrial atmosphere. We tested several upper boundary conditions, which result in green house effects on the atmosphere in the AMED. The idea of making a Mars habitable system has been proposed by Taylor (1992) and Averner and MacElroy (1976). The difference between this study and those is the energy source which is assumed to be only solar energy, and quantitative investigation for the diurnal variation of temperature and sunshine by which plants can survive. A canopy fixed at a certain altitude is a black body for infrared radiation, and transparent for visible radiation. A dry atmosphere with the same components is assumed. At first the necessary position of the canopy height is estimated between the heights of 1 km and 14 km. A lower canopy makes a stable state more quickly. Upon achieving stable equilibrium conditions, the ground level temperature increased with height of the canopy. However, the canopy surface temperature was not affected by the height of it very much. Although a space colony at 14 km height with one atmospheric pressure does not seem to be realistic, a higher canopy gives a higher temperature. Finally the model suggested that the AMED with two or three layers of canopies allows the creation of a warmer and milder climate. This study points a way to produce good closed systems, providing a suitable environment for humans and plants by Martian natural solar energy.
生態工学会の論文
2008-10-31

局地循環モデルを用いた火星における人工閉鎖環境の気象要素の検証

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