Development of distribution map and validation of outdoor thermal index in Japan

本研究的目的是评估城市化地区的热舒适分布。夏季在河边和街区的树下进行了沿着的气候观测。结果表明：（1）城市建成区和农村白天的各项指标无显著差异。从夜间到早晨，农村的值高于建成区。(2)沿着滨江和路边树木向阳处的热舒适指数较大。据认为，这些环境并不总是有用的，以减轻热应力。(3)出现这种情况是因为农村的相对湿度较高，计算出的指数值与建成区一样高。在树荫下，建筑物附近的热舒适指数与路边树木相似。(4)在阴凉处，由于建筑物白天的遮阳作用，建筑物附近的热舒适指数与滨江相似。然而，人们认为，在傍晚之后，由于交通繁忙和建筑物的废气，该指数是所有环境中最高的。

The objective of this study is to evaluate the distribution of thermal comfort of the urbanized area. Climatic observations were conducted along the river side and under the trees in the street blocks in summer. The results are follows: (1) There was no difference of the index between the built-up area and the rural area in a city in the daytime. The values in the rural are higher than in the built-up area from night to morning. (2) Thermal comfort index is larger in the sunny place along the riverside and the roadside trees. It is considered that these environments are not always useful to mitigate the heat stress. (3) This occurred because the relative humidity is higher in the rural and the value of the index was calculated as high as in the built-up area. In the shade the thermal comfort index near the buildings resembled in the roadside trees. (4) In the shade the thermal comfort index near the buildings resembled in the riverside because of solar shading by buildings in the daytime. However it is considered that after evening the index was highest of all environments because of heavy traffic and the exhaust from the buildings.