White roofs could curb effects of "urban heat islands"

02/6/2013 | International, The

Heat absorbed by black pavement and buildings in urban areas creates "urban heat islands," and large ones can affect the pattern of local jet streams during winter, according to computer-generated climate modeling done by scientists at the University of California-San Diego. White roofs could help offset the effect of these islands because they lower the surface temperatures of buildings. However, the reflective roofs could also affect rainfall, according to researchers at Arizona State University.

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