都市環境が都市型集中豪雨に及ぼす影響の評価

Abstract

雲解像の非静力学数値気象モデルCReSS (Cloud Resolving Storm Simulator) に陸面状態を詳細に考慮できる陸面過程モデルSiBUC (Simple Biospher model including Urban Canopy) を導入したCReSiBUC を用いて，都市型集中豪雨の代表的事例である練馬豪雨に対して，都市環境を創り出している3 要素(都市の土地被覆，人工排熱，建物分布) がどのように降水に影響しているのかを検討した。また，人工排熱分布を気象モデルに適用し，その汎用的な利用を目指して人工排熱関数を構築した。

In this research, the impact of urban environment (Land cover, anthropogenic heat, and building distribution and density) on the heavy rainfall at urban region, Nerima Heavy Rainfall were investigated by CReSiBUC, which was a coupled model of a cloud resolving model CReSS (Cloud Resolving Storm Simulator) developed at Nagoya Univ., Japan and a precise land surface model SiBUC (Simple Biosphere model including Urban Canopy) developed at Kyoto Univ., Japan. And the anthropogenic heat function (A.H. function) was built. The method to determine the function could be useful and acceptable when we consider anthropogenic heat at a numerical model.