World Ozone Day 2024: Advancing climate action

World Ozone Day, also known as the International Day for the Preservation of the Ozone Layer, is celebrated on each September 16. The United Nations proclaimed this day as the date to commemorate the signing of Montreal Protocol, which is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. September 16, 2024 marks the 30th World Ozone Day. This year's theme is "The Montreal Protocol: Advancing Climate Action."

The Montreal Protocol, established on September 16, 1987, serves as a significant environmental accord designed to manage the production and usage of substances that deplete the ozone layer. It introduces a structured reduction of these substances, setting clear deadlines for both developed and developing nations, thereby playing a pivotal role in combating ozone layer depletion. According to the protocol, hydrochlorofluorocarbons (HCFCs), commonly utilized in refrigeration and air conditioning systems, are being eliminated. These compounds are known to damage the ozone layer and possess a global warming potential approximately 2,000 times greater than CO2.

The UN Secretary-General António Guterres highlighted the Montreal Protocol as a powerful symbol of hope in protecting the ozone layer for the celebration of 2024 World Ozone Day. He stressed that change is achievable through political resolutions and cooperation among nations. The Montreal Protocol has not only successfully united the world in phasing out various ozone-depleting substances, but has also contributed to preserving carbon sinks, protecting human health, and preventing economic losses.

Guterres also pointed out that the Kigali Amendment, aimed at phasing down HFCs — potent greenhouse gases — could further advance efforts in climate mitigation, protecting both people and the planet. If fully ratified and implemented, the Kigali Amendment could prevent up to 0.5 degrees Celsius of global warming by the end of this century.

He called for a commitment on this World Ozone Day to make peace with our planet and to continue demonstrating the best of international cooperation.

(Cover image via CFP, designed by CGTN's Jia Jieqiong.)