Impact of complex radiation field on urban microclimate

Solar radiation is a key factor affecting the urban microclimate. In order to analyse the influence mechanism of radiation field on the microclimate, proposes the concept of urban complex radiation field and analyses its characteristics. Adopts the simulation method to study the relationship between the underlying surface, the enclosed space and the urban radiation field, and the influence of radiation field on the microclimate. The research finds that the thermal parameters of the underlying surface of enclosed spaces have a more significant impact on the urban radiation field than those of open spaces. The underlying surface with a large long-wave radiation emissivity has a more significant impact on the microclimate. The influence of radiation field on air temperature is stronger than the influence on relative humidity.