28 Oct '16, 2am

Junk Science and the Heat-Island Effect

Junk Science and the Heat-Island Effect

Among the most interesting exhibitors at the GreenBuild International Conference and Expo, an event held in early October in Los Angeles, may have been the Asphalt Pavement Alliance, a group that challenged what we thought we knew about the urban heat-island effect with peer-reviewed research from Arizona State University (ASU). A “heat island” is an urban area that is hotter than nearby rural areas. The research from ASU calls into question many common assumptions about the ability of reflective pavement to mitigate the problem. Reflective surfaces redirect solar energy. For this reason, high albedo, reflective, or “cool” roofs have been suggested as an important tool for lowering the urban heat-island effect. However, efforts to apply the same principle to non-roof hardscapes, including pavement, overlook the complexities of urban geography and how ground level reflectio...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/guest-blog...

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