workers apply light-colored paint to city street

Taking the Measure of L.A.’s ‘Cool Pavement’ Experiment

A CNN story on the climate adaptation strategies used by eight world cities described research conducted by V. Kelly Turner, co-director of the UCLA Luskin Center for Innovation. The article described Los Angeles’ use of cooling paint on city streets as part of a pilot project to measure the effect on surface and ambient temperatures. Turner, an assistant professor of urban planning, and research partner Ariane Middel of Arizona State University collected data from the project and found that treated street surfaces were cooled by about 10 degrees Fahrenheit. However, they also found that heat radiating from the streets elevated temperatures immediately above the surface. Another type of paint could yield different results, and the city is continuing the program to see what methods work best. 


 

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