Mobile smart sensors mounted on bicycles have revealed precise measurements of temperature-humidity dynamics across 114 urban green spaces in 15 cities worldwide, according to research published in Nature Cities. The Yale School of Environment study, led by doctoral student Yichen Yang and Professor Xuhui Lee, quantified how vegetation affects both temperature and humidity throughout daily cycles. The sensors recorded that urban green spaces are cooler than surrounding built environments during peak daylight hours through shade and evapotranspiration processes. However, these same biological cooling mechanisms increase local relative humidity through plant transpiration and soil moisture evaporation. The resulting wet-bulb temperature – … Continue reading Daytime Cooling in Urban Green Spaces Offset by Humidity, Reveals Global Study Across 15 Cities Using Smart Sensors