International Day for the Preservation of the Ozone Layer

International Day for the Preservation of the Ozone Layer

The International Day for the Preservation of the Ozone Layer, established by the United Nations, aims to remind the global community about the importance of preserving the Earth's fragile ozone layer and to support the actions undertaken to protect it. This observance recognizes the progress made in reducing ozone-depleting substances and the ongoing efforts to protect the ozone layer and fight climate change. The ozone layer serves as Earth's sunscreen, shielding life from the Sun's harmful ultraviolet (UV) radiation, which can cause skin cancer, cataracts, and damage to the environment and marine life.

In 1985, scientists discovered a 'hole' in the ozone layer above Antarctica, which affects southern parts of Australia during spring, increasing the risk of skin cancer for the Australian population. This discovery led to adopting the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987, an international treaty to phase out the production and use of harmful chemicals damaging the ozone layer. Australia has played a vital role in implementing and adhering to the Montreal Protocol and has been committed to reducing the consumption and production of ozone-depleting substances.

To mark the International Day for the Preservation of the Ozone Layer, various educational and informative activities across Australia are organized. These activities raise awareness of the burning environmental issue and encourage actions to protect the ozone layer. These activities include school programs, community events, and media campaigns. Australia observes this vital day on September 16th, commemorating the date when the Montreal Protocol was signed, highlighting the need for continued efforts toward preserving this essential component of our planet's atmosphere.

Facts about the Ozone Layer

• The theme for International Day for the Preservation of the Ozone Layer in 2025 was Montreal Protocol: Advancing Climate Action. In 2024 the theme was Montreal Protocol: fixing the ozone layer and reducing climate change.
• The natural level of ozone in the stratosphere is a result of a balance between sunlight that creates ozone and chemical reactions that destroy it.
• The thinning of the ozone layer is caused by chemicals, such as chlorofluorocarbons (CFCs), carbon tetrachloride, halons, and others. These chemicals -- often used in refrigeration, air conditioning, packaging, insulation, aerosols, and so on -- release chlorine and bromine when they come in contact with sunlight. These elements then deplete the ozone layer.
• Due to its proximity, Australia faces higher risks associated with the ozone hole, such as increased UV radiation exposure, which can have negative impacts on human health, agriculture, and ecosystems.
• Australia has been successful in reducing its consumption and emissions of ODS, such as chlorofluorocarbons (CFCs) and halons, in compliance with the Montreal Protocol. Since the late 1980s, the consumption of these substances has decreased by over 99%.

In the News and Trending in Australia for International Day for the Preservation of the Ozone Layer

Top things to do in Australia for this observance

• Explore interactive online simulations that allow you to manipulate variables to observe the effects on ozone depletion. These simulations can help you grasp complex scientific concepts in a visual and engaging manner.
• Utilize various reputable online sources, such as official government websites or scientific research organizations, to gather information on the status of the Ozone Layer in Australia. Consider topics like its history, protection measures, and improvements over time.