The report emphasizes that the Protocol’s success is rooted in strong scientific foundations. The WMO Global Atmosphere Watch (GAW) Programme plays a central role in this effort, providing critical ozone, ozone-depleting substance, and ultraviolet (UV) radiation observations, as well as analysis, modelling, data stewardship, and capacity-building. Maintaining high-quality, globally consistent monitoring is described as essential to track ozone recovery and to understand the many factors that may influence its pace.

The Bulletin reviews the state of the ozone layer and the Antarctic ozone hole in 2023, and it highlights measures to protect people and ecosystems from harmful UV radiation. It also notes recent capacity-building work, including the restoration of Brewer spectrophotometer observations in South America, supported by the Trust Fund under the Vienna Convention.

News: WMO Ozone and UV Bulletin published for World Ozone Day