Pollution tapers off rain

Published: Wednesday 31 January 2001

Air pollution causes a decrease in tropical rainfall. The US National Aeronautical and Space Administration (nasa) has discovered an important link between air pollution and rainfall, reports the United Press International. "The concentration of pollution particles redistribute the water inside the clouds into numerous small droplets that are too small to combine with each other in the available lifetime of the cloud," said Daniel Rosenfeld, professor of earth sciences at the Hebrew University of Jerusalem in Israel. The new information has come from by the Tropical Rainfall Measuring Mission, a joint effort of the Japanese and US governments. The maps show that precipitation varies drastically with change in air pollution levels.

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