Sunday, April 5, 2009

Increasing white surfaces in urban areas may be better albedo solution than clear cutting the planet; Earth; 4/5/09

Keeping Cool with the Albedo Effect - Santa Barbara,CA,USA
The amount of heat removed from the atmosphere by painting a 10-square-meter dark roof white would cool the Earth as much as removing 630 kilograms of carbon dioxide from the atmosphere. Replacing a square meter of asphalt pavement with concrete or white topping is like removing 38 kilograms of carbon dioxide over a year.
On a global scale, with urban areas comprising about 1 percent of the Earth's land surface and roofs and paved surfaces comprising about 25 percent and 35 percent of a typical urban area, respectively, lightening their color would have the same cooling effect as keeping 44 gigitons of carbon dioxide out of the atmosphere

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