Evaluating the Impact of Green Roofs on Urban Heat Island Effect and Stormwater Management

Abstract

Due to rising urbanisation and climate change, urban areas are increasingly confronted with issues linked to the Urban Heat Island (UHI) effect and stormwater management. These challenges are becoming increasingly apparent. There has been a growing interest in green roofs as a sustainable building strategy due to the fact that they have the potential to alleviate these environmental problems. to what extent green roofs are beneficial in mitigating the urban heat island effect and in managing stormwater in urban environments. The research evaluates the thermal performance of green roofs by using a combination of field measurements, simulation models, and case studies. It also examines the impact that green roofs have on surface and ambient temperatures, as well as their capacity to retain and delay the discharge of rainwater. Green roofs have a substantial impact on lowering temperatures on rooftops, which in turn contributes to a reduction in the overall urban heat island effect. A further benefit of green roofs is that they improve stormwater management by soaking up rainwater, lowering peak flow rates, and delaying the discharge of runoff into urban drainage systems. In addition, the study underlines the fact that performance might vary depending on a variety of parameters, including the species of plant, the depth of the substrate, and the meteorological circumstances.