摘要：Recently, the rapid change in the heat environment caused by the increase in energy consumption and the high-density of urban structures has become a serious problem of global scale. Although the global warming caused by greenhouse gases is becoming worse, the problem of local heat environments should also not be ignored, especially in urban areas. Air temperature rise is observed in the city in comparison with the urban fringe. This is called the “urban heat island” phenomenon because the plotting of isothermal lines results in an island shape. Because this phenomenon causes serious problems for human health, such as heat stress, countermeasures against the thermal pollution of urban heat islands are necessary. Various approaches to heat island countermeasures have been considered, including research into the space-time characteristics of energy consumption, the effect of greenspace and tree-planting on roof surfaces, and networks to monitor urban air temperature distribution.
