https://www.smithsonianmag.com/smart-news/septembers-ozone-hole-was-the-biggest-it-has-been-in-25-years-180989657/
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“To understand what’s happening, we first need to understand the ozone layer.”
“September's Ozone Hole Was the Biggest It Has Been in 25 Years Skip to main content Search Shop Newsletters Renew Give a Gift Subscribe Membership i Subscribe Give a Gift Renew Sections Smart News History Science Innovation Arts & Culture Travel At the Smithsonian More from Smithsonian magazine Newsletters Photo Contest Podcast Videos Our Partners Smithsonian Store Smithsonian Journeys Subscribe to Smithsonian magazine and get a FREE tote.”
““This year’s ozone hole shouldn’t be a cause for alarm,” Kessenich told Live Science 's Sascha Pare in an email.”
“While the 1987 Montreal Protocol phased out the use of CFCs globally, they can persist in the atmosphere for decades.”
“This year brought a stronger and colder polar vortex.”
“The ozone layer lies in the Earth’s stratosphere and protects our planet from harmful ultraviolet (UV) radiation that can harm humans, plants and animals.”
“By September 20, it reached a size close to its October 2015 peak, when it was 10.8 million square miles.”
“A larger ozone hole shifts the Southern Annular Mode into a positive phase , which affects winds and precipitation in different areas.”
““It's too soon to tell what has been driving dynamical variability in recent years, but more research is needed,” Kessenich says to Live Science .”
“Wildfires can destroy the ozone layer Climate change has increased the frequency of wildfires, which is not a good thing when it comes to mending the ozone layer.”
“In fact, this year’s hole isn’t as deep as it has been in previous years, and year-to-year variability is to be expected.”
“September’s Ozone Hole Was the Biggest It Has Been in 25 Years The size of the hole in the stratosphere’s ozone layer fluctuates every year, but last month’s, measuring 10.6 million square miles, was especially large Sara Hashemi | Daily Correspondent October 9, 2026 10:55 a.m.”
“The ozone hole’s size fluctuates every year.”
“If You Look Closely, You Can Still See His Fingerprints October 8, 2026 Margaret Hamilton, a Pioneering Software Engineer Who Made the First Human Moon Landing Possible, Dies at 90 October 8, 2026 Sara Hashemi is a science writer and fact-checker currently based in New York City.”
“European Union, Copernicus Atmosphere Monitoring Service data In September, the Antarctic ozone hole peaked at 10.6 million square miles—the second largest ever observed for this time of year.”
“Using data from the Copernicus Atmosphere Monitoring Service , scientists found that the ozone hole started growing earlier than usual in August.”