Methane is one of the most potent—and surprising—greenhouse gases.
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Satellite data show that nitrogen oxide and carbon monoxide are not declining as much as projected by models.
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The observation by the Earth Observing-1 satellite is an important breakthrough as scientists work to measure and monitor emissions of this potent greenhouse gas from space.
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Devices that limit NOx emissions from electric power plants have helped clear the air over the United States.
Hydroxyl radicals are critical for offsetting concentrations of methane in the air.
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Emissions maps tell the story of global oil markets.
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Rapid growth from 2008–2017 built upon the rise in the atmospheric concentration of the gas that has been happening for more than a century.
Measurements from OCO-2 will provide a baseline for monitoring changes in emissions.
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Haze, clouds, and fog mingled in China’s Sichuan Basin on December 24, 2014.
Atmosphere Dust and Haze
The pollution particles that leave palls of gray over Bangladesh in the winter have many sources.
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