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Ozone Hole is Smallest Since 1988
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Published November 3, 2017
The smaller ozone hole was strongly influenced by an unstable and warmer-than-usual Antarctic vortex.
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The Ups and Downs of Sulfur Dioxide in North America
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Published May 26, 2017
Sulfur dioxide emissions have declined in the eastern United States and risen slightly in Mexico.
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Russian Volcano Rumbles
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Published March 28, 2017
For the first time in nearly 250 years, the Kambalny Volcano ejected ash.
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Satellite Catalogs Volcanic Sulfur Emissions
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Published March 10, 2017
Eruptions are dramatic, but continuous, low-level emissions of volcanic gas are an important input to the atmosphere.