都市の熱代謝モデルの提案と緑化に係わる熱収支分析 : 都市気候モデルに基づく東京の都市熱環境の分析

概要

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Various scenarios on urban planning have been proposed to minimize the impacts of urbanization on urban climate. Among them, replanting at the urbanized area such as roof planting is the most popular measure used, and major cities have actually introduced programs to promote the urban tree planting. The method of tree planting surely decreases air temperature, but an increase in air humidity has subsequently occurred. Thus, these two aspects should be considered simultaneously in order to evaluate the effects of urban planting. A new concept for evaluating the countermeasure for heat island, which considers the generation and transports of sensible heat and latent heat within urban region, is proposed as "Urban Thermal Metabolism model" in this paper. The impact of urban tree planting on urban climate in Tokyo is quantitatively evaluated based on this model.
2004-05-30