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Arctic Ozone Hits Record High
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Published September 26, 2024
An active atmosphere at northern latitudes contributed to the highest monthly Arctic ozone concentrations measured in the satellite era.
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An Unequal Air Pollution Burden at School
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Published November 1, 2023
Satellite observations show that students of color in the U.S. attend public schools with higher concentrations of air pollution than their white peers.
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No Breathing Easy for City Dwellers: Nitrogen Dioxide
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Published March 14, 2022
A new satellite-derived global dataset links concentrations of nitrogen dioxide with cases of pediatric asthma in urban areas around the world.
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Substantial Antarctic Ozone Hole in 2021
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Published October 29, 2021
A colder than usual winter atmosphere over the Southern Hemisphere led to a deep and larger-than-average ozone hole in 2021.
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Sulfur Skies over La Palma
Published October 20, 2021
Volcanoes emit sulfur dioxide — a pungent gas that reacts with oxygen and moisture in the air to produce a haze called vog.
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Reduced Fires Lead to Some Air Quality Improvements in Africa
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Published March 14, 2021
Changes in fire patterns have led to seasonal reductions in nitrogen dioxide pollution.
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Nitrogen Dioxide Levels Rebound in China
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Published May 22, 2020
With most lockdowns ending and economic activity resuming, levels of the air pollutant have returned to near normal for this time of year.
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Unusual Weather Leads to Ozone Low Over the Arctic
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Published April 16, 2020
While such low concentrations of ozone are unusual, they are not unprecedented.
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2019 Ozone Hole is the Smallest on Record
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Published October 22, 2019
Abnormal weather patterns in the upper atmosphere over Antarctica dramatically limited ozone depletion.
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