Translation. Region: Russian Federal
Source: United Nations – United Nations –
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September 16, 2025 Climate and Environment
Forty years ago, states united to adopt Vienna Convention for the Protection of the Ozone Layer, and agreed on measures to protect people and the planet from harmful ultraviolet radiation. Soon, on September 16, 1987, a new scientific data-driven Montreal Protocol, under which chlorofluorocarbons began to be gradually phased out, allowing the ozone layer to begin to recover.
On September 16, 2009, the Vienna Convention and the Montreal Protocol became the first treaties in the history of the UN to receive universal ratification. International Day for the Preservation of the Ozone Layer – September 16 – The UN celebrates this historic achievement and looks to the future with hope. The ozone treaties embodied the vision of moving from science to global action and will remain its solid foundation for many years to come.
"This achievement reminds us that when countries heed scientific warnings, progress is possible," said the UN Secretary-General. Antonio Guterres in his message on the occasion of the International Day.
At the same time, “scientists are sounding the alarm again,” he continued, as the world rapidly approaches increase in global temperature by 1.5 degrees Celsius compared to pre-industrial levels, which “is fraught with catastrophic consequences.”
The Vienna Convention and the Montreal Protocol continue to play a key role in monitoring ozone and ultraviolet radiation levels, as well as controlling ozone-depleting substances and other chemical compounds, including hydrofluorocarbons – highly potent greenhouse gases used primarily in refrigeration technologies and being phased out under the Kigali Amendment to the Protocol.
The UN chief called on governments to fully ratify and implement the Kigali Amendment, which commits them to phase out hydrofluorocarbons. He also noted the need to incorporate this commitment into new national climate plans. According to Guterres, implementing the Kigali Amendment will reduce temperature rise by 0.5 degrees Celsius by the end of the century, and when combined with energy-efficient cooling, these gains can be doubled.
“Every fraction of a degree counts. Every action counts,” the Secretary-General said, calling on the global community to renew its commitment to preserving the ozone layer and protecting people and the planet for future generations.
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