実測及び数値シミュレーション解析に基づく長野市市街地の屋外熱環境の把握

摘要

本研究では、長野市市街地の熱環境の実態把握を目的に、樹木・土地被覆・建物等の空間形状や構成材料の把握を行った上で、実測査では気温・表面温度の調査、数値シミュレーション解析で表面温度分布を算出、さらに評価指標としてHIP・MRTの算出を行い都市熱環境の詳細な要因分析を行った結果、以下の知見が得られた。%The purpose of this study is to grasp outdoor heat environment at urban area in Nagano city based on measurement and numerical simulation analysis. Air temperatures and surface temperatures are investigated by the measurement survey. The surface temperature distribution is calculated by numerical simulation analysis. In addition, heat island potential (HIP) and Mean Radiant Temperature (MRT) are calculated, and a detailed factor of the city heat environment is analyzed. Difference of city block density effects to air temperature. Heat Island Potential (HIP) numerical analysis shows 8.6 to 22.5 Celsius degree at daytime.