Future Ozone Changes Expected to Increase Global Warming Significantly

A new study led by the University of Reading reveals that future changes in ozone will contribute more to global warming than previously estimated, with ozone expected to cause an additional 0.27 watts per square meter of warming by 2050, making it the second-largest contributor after carbon dioxide. While international bans on ozone-depleting substances like CFCs and HCFCs have aided ozone layer recovery, this healing process paradoxically increases warming, offsetting some climate benefits of the bans. The research also highlights that ground-level ozone, produced by air pollution from vehicles and factories, poses health risks and exacerbates warming, with projections based on scenarios of limited air pollution controls. Separately, a review of studies on extreme heat effects on older adults shows that this vulnerable group often underestimates the risks of prolonged heat events and lacks adequate preparedness, despite rising global temperatures and increasing heat waves. Researchers emphasize the need for greater awareness and proactive measures to protect older populations from the growing threat of extreme heat. These findings underline complex challenges in climate mitigation efforts and public health as the planet warms.