Abstract
High-priority areas for adaptation measures, “hot spots,” are explained based on the analysis results of the relationship between urban morphology and radiation, and wind environment in the street canyon. For the background of the above discussion, the distribution of air temperature, wind velocity, and thermal sensation indicators of human body are explained on the urban scale. The distribution of hot spot based on solar radiation is dominated by the shadows of the buildings on both sides of the north–south road and southern side of the east–west road. A high weak wind risk area is defined by the road width and the building height in each road parallel or perpendicular to the main wind direction. The number of hot spots in detached house and tenement house district is larger than that in commerce and business district, due to the amount of open space related to weak wind risk.
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