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Night-Shining Clouds are Getting Brighter
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Published January 27, 2011
The rare night-shining clouds seen in this photo are both forming more frequently and becoming brighter, trends that point to changes in the atmosphere linked to greenhouse gases.
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Eruption at Mount Merapi, Indonesia
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Published November 11, 2010
The volcano released sulfur dioxide, a colorless gas that can harm human health and cool Earth’s climate.
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Wandering Ozone Hole in November 2009
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Published November 2, 2010
In November 2009, the Antarctic ozone hole contorted and stretched itself for three weeks in such a way as to give South Americans an extra dose of ultraviolet radiation.
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Smog over China
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Published October 14, 2010
In early October 2010, a high-pressure system settled in over eastern China, allowing the air to stagnate, pollution to accumulate, and thick smog and heavy fog to build up to hazardous levels.
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Antarctic Ozone Hole 2010
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Published September 16, 2010
The Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite acquired data for this map of ozone concentrations over Antarctica on September 12, 2010.
Eruption of Eyjafjallajökull Volcano, Iceland
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Published April 16, 2010
This map shows the amount of volcanic ash and haze over the North Atlantic following the eruption of Iceland&rsquos;s Eyjafjallajökull Volcano on April 15, 2010.
Antarctic Ozone Hole 2009
Published September 17, 2009
Blues and purples in this image of Antarctic ozone concentrations reveal the developing ozone hole of 2009.
Smoke from Fires in Russia and Alaska
Published August 12, 2009
This false-color image shows where airborne particles absorbed sunlight over the Arctic on August 1-2, 2009. The aerosols resulted from multiple large fires in the region.