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Science 15 September 1989:
Vol. 245. no. 4923, pp. 1227 - 1230
DOI: 10.1126/science.245.4923.1227
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Articles

Aerosols, Cloud Microphysics, and Fractional Cloudiness

BRUCE A. ALBRECHT 1

1 Department of Meteorology, Pennsylvania State University, University Park, PA 16802.

Increases in aerosol concentrations over the oceans may increase the amount of low-level cloudiness through a reduction in drizzle—a process that regulates the liquid-water content and the energetics of shallow marine clouds. The resulting increase in the global albedo would be in addition to the increase due to enhancement in reflectivity associated with a decrease in droplet size and would contribute to a cooling of the earth's surface.

Submitted on April 3, 1989
Accepted on July 11, 1989


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Science. ISSN 0036-8075 (print), 1095-9203 (online)