メソスケール数値解析による海風の進入経路に沿った移動領域の顕熱・潜熱・平均運動エネルギー収支分析

摘要

著者らはこれまで、都市空間内の一定の大気領域を仮想の関空間領 域（Control Volume:以下CV）と想定し、そのCV内に流出入する熱 と内部での発熱の収支をメソスケール数値気候解析の結果を利用し て算出し、都市全体の熱収支構造を分析する手法（都市の熱収支モデ ル）を提案した。%The authors have proposed new models to calculate heat balance and mean kinetic energy balance of urban space. In these models, an arbitrary domain fixed a certain region is regarded as the Control Volume. By using these models, the heat and mean kinetic energy structures of each region of the Tokyo metropolitan area have been analyzed under a meteorological condition dominating sea breeze on a typical sunny day in summer. However, to clarify the interaction between sea breeze and urban climate, it is necessary to focus on the sea breeze itself. Therefore, the authors propose a new concept "moving Control Volume" along the sea breeze, and heat and mean kinetic energy balances of the moving Control Volume are calculated. From numerical simulations, to raise the height of buildings changes the temperature, absolute humidity, and penetrating speed of sea breeze. In this paper, the reasons are explained quantitatively with respect to the heat balance and mean kinetic energy of the sea breeze.