With a year until the Tokyo Olympics and Paralympics, Japan is applying a special coating to roads to reduce surface temperatures. But NHK has learned this anti-heat measure may have the opposite effect.
A group of researchers at the Tokyo University of Agriculture, led by Professor Osamu Kashimura, compared normal and coated roads on sunny days this month and in July to evaluate the coating's effectiveness. The results show when measured at the heights of 50, 150, and 200 centimeters, average temperatures on the coated roads were actually higher.
The Tokyo Metropolitan and central governments are applying a special coating to more than 100 kilometers of roads, including the Olympic marathon course. Land ministry officials say athletes who ran on the coated roads reported that they felt cooler.
A group of researchers at the Tokyo University of Agriculture, led by Professor Osamu Kashimura, compared normal and coated roads on sunny days this month and in July to evaluate the coating's effectiveness. The results show when measured at the heights of 50, 150, and 200 centimeters, average temperatures on the coated roads were actually higher.
The Tokyo Metropolitan and central governments are applying a special coating to more than 100 kilometers of roads, including the Olympic marathon course. Land ministry officials say athletes who ran on the coated roads reported that they felt cooler.
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