Estimating Terrestrial Radiation for Human Thermal Comfort in Outdoor Urban Space

Cities inadvertently create warmer and drier urban climate conditions than their surrounding areas through urbanization that replaces natural surfaces with impervious materials. These changes cause heat-related health problems many studies suggest microclimatic design (MUD) as an approach to address these problems. In MUD-related research, although terrestrial radiation plays important role in human thermal comfort previous use models identify heat stress, few have addressed the effect of radiation. This study develops ground ratio factor (GRF) model estimate different according conditions. Three types materials (asphalt, concrete, grass) were considered model, field conducted humid subtropical (Cfa) zone during hot season (13 July 19 September 2020). The was validated by comparing predicated (PTR) from actual (ATR). results showed there is a statistically significant strong correlation between PTR ATR. can contribute MUD strategies updating existing energy budget models, which lead measurement more accurate for mitigating environments.