Dirty clouds change rainfall
Scientists find a link between air pollution and extremes in rainfall
By Stephen Ornes, 17:27 PM November 30, 2011
What goes up into the air can have a big impact on what comes down.
In a new study showing how large weather systems are closely linked, scientists report that tiny airborne particles affect how much rain falls over a region. Some of these particles, called aerosols, occur naturally and include dirt and dust. Other aerosols come from human activities and represent air pollution. Once these particles get swept up into a cloud, they start to make changes.
The scientists found a link between l...
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