A decrease in emissions of ozone precursor gases during the COVID-19 economic downturn likely explains the unusual reduction in ozone concentrations observed during the spring and summer of 2020.
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Posted inNews
Iodine-Laden Desert Dust Is Eating at Ozone Pollution
In a happy accident, scientists found a potential solution to an atmospheric chemistry mystery. Their findings could be a missing piece in the iodine cycle and in atmospheric models.
Posted inEditors' Vox
New Insights into Polar Stratospheric Clouds
New satellite observations of polar stratospheric clouds have advanced our understanding of how, when, and where they form, their composition, and their role in ozone depletion.
Posted inResearch Spotlights
Examining the Intricacies of Ozone Removal by Deciduous Forests
A new study looks into how air movement in the atmospheric boundary layer affects ozone removal by deciduous forests, which are a significant ozone sink.
Posted inEditors' Highlights
Measurements of Ozone-Depleting Chemicals in the Asian Monsoon
New high-altitude aircraft observations identify unexpected high levels of halogen-containing species entering the stratosphere above the summertime Asian monsoon.
Posted inEditors' Vox
Halocarbons: What Are They and Why Are They Important?
CFCs and other halocarbons have long been known for causing an ozone hole over the Antarctic, but many of them are also powerful greenhouse gases.
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Did Ozone Loss Cause the End Devonian Mass Extinction?
Ozone loss, perhaps as a consequence of a warming climate, may have been responsible for a catastrophic loss of biodiversity.
Posted inEditors' Vox
Removal of Ozone Air Pollution by Terrestrial Ecosystems
Tropospheric ozone is removed at Earth’s surface through uptake by plant stomata and other nonstomatal deposition pathways, with impacts on air pollution, ecosystem health, and climate.
Posted inResearch Spotlights
Tracking Tropospheric Ozone Since 1979
Stratospheric ozone depletion between 1979 and 2010 resulted in a slight decrease of ozone in the troposphere during that period despite increased ozone production from anthropogenic emissions.
Posted inNews
How Ice Cores Are Helping to Track Preindustrial Ozone
Research helps allay concerns about discrepancies between atmospheric chemistry models and historical direct measurements.