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ozone

Antarctica’s-ozone-hole-in-September-2014-which-has-shrunk-by-4.5-million-kilometers-square-miles-since-2000
Posted inNews

Antarctica's Ozone Hole Is Healing, Scientists Say

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 30 June 20163 June 2024

The ozone hole over Antarctica has shrunk by 16% since its peak in 2000, and some suspect it may disappear entirely by midcentury.

Smog and Hong Kong’s skyline, seen from Victoria Peak.
Posted inResearch Spotlights

Chemical Boosts Ozone Production over Southern China

by Terri Cook 27 May 201613 February 2023

The presence of nitryl chloride in polluted urban air can enhance the production of ozone by up to 41%, according to a new modeling study constrained by ground-based measurements.

Posted inEditors' Vox

Connecting Thunderstorms and Climate Through Ozone

by M. Barth and C. Zhang 5 May 201629 March 2022

New data links thunderstorms to climate via their impacts on aerosols, ozone, and water vapor in the stratosphere.

Posted inNews

Human-Made Fires Pollute Air with Ozone Half a World Away

Cody Sullivan by C. Sullivan 27 January 201621 September 2022

Fires in Africa and Southeast Asia contributed to western Pacific pollution, a study finds. Prior understanding attributed hefty levels of the harmful agent and greenhouse gas to natural processes.

Posted inResearch Spotlights

To Help Fix the Hole in the Ozone Layer, Just Add Ice

by David Shultz 11 September 201523 January 2023

Computer simulations show that adding tiny droplets of ice to the atmosphere during the spring could help eliminate chlorofluorocarbons and repair the hole in the ozone layer.

Posted inResearch Spotlights

Ozone Hole to Remain Large During Cold Years

by E. Betz 28 April 20153 June 2024

Despite the Montreal Protocol's success, it will take years of observations to be sure that regulations are allowing the ozone hole to recover.

Posted inOpinions

Is the Shale Boom Reversing Progress in Curbing Ozone Pollution?

by G. W. Schade and G. S. Roest 21 April 201512 November 2021

Concentrations of volatile organic compounds—precursors to ground-level ozone formation—are on the rise in areas over and downwind of a major shale oil and gas field in Texas.

Posted inResearch Spotlights

Changing Patterns in U.S. Air Quality

by C. Schultz 18 February 201513 February 2023

Over the northeast United States, ground-level ozone will peak in the winter rather than the summer thanks to continued reductions of regional nitrogen oxide emissions from smokestacks and tailpipes.

Posted inResearch Spotlights

What Causes Nitric Oxide to Infiltrate the Ozone Layer?

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 9 December 201420 January 2023

Processes in the polar atmosphere can cause nitric oxide (NO)-enriched air to descend and destroy stratospheric ozone. Scientists explore one cause of these NO fluxes, stratospheric sudden warming.

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Seasonal Iron Cycle and Production in the Subantarctic Southern Ocean

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