The Presidential Daily Brief

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    New Study Says Cleaning Air Might Raise Temperatures

    Damned if you do, damned if you don’t. New research predicts that cleaning up air pollution might actually raise global temperatures, because aerosols in the atmosphere help cool the climate. The Norwegian study suggests pollution has masked to a degree — literally — the impact of global warming, and eliminating major aerosols, which can help reflect sunlight away from the Earth, could increase the planet’s temperature by 0.5 to 1.1 degrees Celsius. As places like Asia work to curb air pollution, it’s likely aerosols will continue to decline.

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