“The way in which this would help would be to reduce the “urban heat island” effect.
Urban areas are hotter than the surrounding countryside because black tar roofs and concrete don’t reduce heat. They gather it and radiate it at night. While white roofs would help to reflect sunlight away from the city, thus lowering the temperature and lowering the need for air conditioning, a better solution would be a massive implementation of green roofing technology. Not only would the urban heat island effect be mitigated, the increased green space would help to clean urban air, help to reduce storm water runoff, as well as absorb carbon dioxide.”
