Ozone Layer Will Contribute More Intensely to Global Warming

A recent study conducted by the University of Reading has shown that the ozone layer will contribute to global warming more intensely than previously thought. Despite the ban on ozone-depleting substances, particularly chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), which has aided the recovery of the ozone layer, its recovery, coupled with increasing air pollution, could lead to an additional warming of up to 40% more than expected.

The study's findings have been published in the scientific journal Atmospheric Chemistry and Physics. The ozone in the Earth's atmosphere could generate an additional 0.27 watts per square meter between 2015 and 2050, making it the second-largest contributor to future warming after carbon dioxide. This discovery underscores the need to reassess climate policy in light of new data regarding ozone's impact.

Scientists have used computer models to simulate atmospheric changes by the middle of the century, assuming scenarios with low levels of air pollution but gradual phase-out of CFCs and HCFCs as mandated by the Montreal Protocol. The results indicated that the phased-out substances would offer less climatic benefit than expected, as they are also greenhouse gases.

Although the recovery of the ozone layer remains crucial for protecting human, animal, and plant health from harmful ultraviolet radiation, scientists warn that climate policy must account for the warming effects of ozone. Climate change strategies need to be updated to consider this additional factor.