Antarctic Ozone Recovery Stays on Track as COP31 Opens in Turkey

Atmospheric science assessments and international climate negotiations took center stage this week as researchers from the National Oceanic and Atmospheric Administration (NOAA) and NASA confirmed that long-term healing of the Antarctic ozone layer remains on schedule despite a strong 2026 polar vortex, while world leaders gathered in Antalya, Turkey for the COP31 United Nations climate conference amid warnings of a five-year plateau in emissions reductions.

2026 Antarctic Ozone Hole Peaks at 10.5 Million Square Miles as Long-Term Recovery Holds

According to ABC7 News, a new report by NOAA and NASA found that the 2026 Antarctic ozone hole reached its maximum annual extent on September 18 at 10.5 million square miles—about 90% as large as the record ozone hole observed in the year 2000 and the seventh largest in 48 years of satellite monitoring. The expansion followed 2025, when the ozone hole ranked as the fifth smallest since 1992. Amy Butler, a research scientist at NOAA's Chemical Sciences Laboratory, explained that weak planetary-scale weather systems in August and September allowed an unusually large polar vortex to persist.

Despite the seasonal fluctuation, NASA ozone research team leader and University of Maryland senior scientist Paul Newman emphasized that restrictions on chlorofluorocarbons (CFCs) and other ozone-depleting compounds kept the 2026 hole 1 to 2 million square miles smaller than it would have been under year 2000 chemical concentrations. Because the annual depletion now forms later each season as legacy chemicals gradually break down, scientists project full ozone recovery by the 2070s.

World Leaders Open COP31 UN Climate Negotiations in Turkey

In international environmental diplomacy reported by KCBS Radio, delegates and heads of state began formal talks Wednesday at the COP31 United Nations climate conference hosted by Turkey and led by Australia. Following the 2023 Dubai pledge to transition away from fossil fuels and subsequent summits in Azerbaijan and Brazil, negotiators face scientific warnings that global temperatures are likely to surpass the 2015 Paris Agreement target of 1.5 degrees Celsius (2.7 degrees Fahrenheit) above preindustrial levels of the early 1800s. Former U.S. Secretary of State and climate envoy John Kerry called for actionable plans rather than promises as the United States—the world's second-largest emitter after China—remained absent for the second consecutive year.

Climate Action Tracker Warns Global Warming Curbs Have Stalled for Five Years

During Thursday's sessions in Antalya, Turkey, a report by the independent Climate Action Tracker detailed by KCBS Radio concluded that aggregated global climate action has stalled for 5 consecutive years as fossil fuel expansions offset clean energy gains. While global policies in the first five years after the 2015 Paris Agreement trimmed 1 degree Celsius (1.8 degrees Fahrenheit) from baseline warming projections, report lead author Sarah Heck of Climate Analytics noted that current pledges leave the world on track for 2.6 degrees Celsius (4.7 degrees Fahrenheit) of warming by the end of the century—unchanged from 2024 and 2025 projections. Marshall Islands President Hilda Heine—joined by delegations from Tuvalu, the Bahamas, Antigua and Barbuda, and Niue—called for an immediate halt to new coal and oil extraction after coral bleaching episodes, while Barbados Prime Minister Mia Mottley warned that climate finance pledges have fallen 70% below previous levels.