Start Date: End Date: Published Date Data Date
Watching the Ozone Hole Before and After the Montreal Protocol
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Published September 18, 2012
NASA satellites have observed the Antarctic ozone hole since the late 1970s—before and after nations agreed to stop producing chemicals that destroy the ozone layer.
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Emissions from Oil Sands Mining
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Published March 2, 2012
Nitrogen dioxide emissions rise with the expansion of bitumen mining operations in Canada.
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SO2 Pollution Controls Bring Results
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Published December 2, 2011
Scientists using a NASA satellite found that sulfur dioxide levels in the vicinity of major coal-fired power plants in the U.S. have fallen by half since 2005.
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2011 Antarctic Ozone Minimum
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Published October 21, 2011
The annual ozone hole over Antarctica reached its maximum area on September 12, 2011, and its maximum depth on October 9, 2011.
Ash from Puyehue-Cordón Caulle
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Published June 18, 2011
This series of images tracks ash from a Chilean volcano that made a nearly complete circle around the world.
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Dust Blown from Africa to Scandinavia
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Published April 15, 2011
The Ozone Monitoring Instrument (OMI) on NASA's Aura satellite spied dust from a Saharan sand storm blowing several thousand kilometers over the North Atlantic and Europe in April 2011.