Abstract
Urban planning incorporating mitigation of the urban warming which is due to urban heat island phenomenon and global warming is needed. The mitigations that are thought to be suitable in each place should be selected, because the climatic characteristics are different by places in urban area. Accordingly, Urban Environmental Climate Maps (UECMs) are proposed as a tool for examining the suitable mitigation in each place. For making UECMs, at first, it is necessary to understand the summer temperature distribution patterns and factors of them in urban area. Therefore, this study aims at evaluating the relationship between temperature and the factors comprehensively using observed data in Hiroshima plain. As a result, in the daytime, distance from the coastal line in the direction of sea breeze and the rate of building blocking (RBB) in south-southwest direction have effects on the temperature distribution. In the nighttime, RBB in north-northeast direction and surrounding green area have effects.
