地表面パラメータ設定の改良，及び人工排熱影響の組み込みMM5を用いた都市気候解析モデルの構築（その1）

摘要

メソスケールモデルはヒートアイランド現象の構造を把握する上 で大変有用なモデルであり、これを用いた多くの研究が行われてい る。筆者らもこれまで、メソスケールモデルSoftware Platfbrm文1）を 用いた都市気候の解析を行い文2）、特に典型的な夏季気象条件を中心 として精度良くヒートアイランドの解析が可能である事を示した文 3）。%Meso-scale climate analysis is very useful to understand the structure of the urban heat island. MM5, provided by National Center for Atmospheric Research, is one of major meso-scale model in the world. However, parameterization of ground surface in MM5 is rather coarse to analyze urban climate. That is, in MM5, ground surface parameters are determined by most superior land-use in each mesh. However, this method is unable to represent detail urban structure, to say, the effect of Cool Island with green or water body is neglected. In this paper, ground surface parameterization in MM5 is modified to represent land-use fraction. Furthermore, effect of anthropogenic heat release is also incorporated in MM5.