International Day for the Preservation of the Ozone Layer

International Day for the Preservation of the Ozone Layer is dedicated to raising awareness about the importance of protecting the Earth’s ozone layer. This vital component of the atmosphere shields life from harmful ultraviolet radiation. Officially established by the UN General Assembly in 1994, the observance takes place every year on September 16th.

History

The ozone layer is a thin, gaseous envelope in the Earth’s atmosphere that absorbs excess solar ultraviolet rays and helps regulate the planet’s temperature.

The critical role of the ozone layer came to light through studies in the 20th century. By the 1970s, scientists had found that the layer was becoming dangerously thin in some areas, leading to the discovery of “ozone holes” over the Arctic and Antarctica. These holes were linked to toxic substances from human industrial activity, including refrigerants and aerosol sprays, which contributed to the depletion of ozone.

In 1985, the Vienna Convention was signed by 28 countries, launching coordinated research efforts to protect the ozone layer. In 1987, the Montreal Protocol listed harmful industrial substances and called for their elimination, significantly slowing the destruction of the ozone layer. Research and international cooperation continue to this day.

Interesting Facts

• If compressed to sea level, the ozone layer would only be about 3 millimeters thick.
• Ozone has a distinctive smell, often noticed after a thunderstorm.
• During World War I, ozone was used as a disinfectant in medical settings.

How to Take Part

On International Day for the Preservation of the Ozone Layer, learn more about the science behind the ozone layer and its significance. Attend university lectures or online seminars on the subject. Consider supporting environmental organizations that work to protect the ozone layer and promote ecological sustainability.

When is International Day for the Preservation of the Ozone Layer in 2025?

International Day for the Preservation of the Ozone Layer is observed on September 16 each year.

Observations