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Aerosols Brighten Clouds

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It was suggested 25 years ago that industrial aerosols promote cloud formation, thereby increasing the Earth's albedo and cooling it. Now a research team at Brookhaven National Laboratory in Upton, N.Y., and at Purdue University in West Lafayette, Ind., has confirmed the brightening effect of sulfates on clouds over the North Atlantic. The group compared a model that forecasts the mixing of sulfate and SO2 with visible and mid-infrared radiance measurements of low-level clouds from the NOAA-9 satellite in April 1987. For a given amount of water in a cloud, the presence of the aerosol led...Read full article

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    Published: April 2002
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