International Day for the Preservation of the Ozone Layer is observed every year on 16th September, commemorating the date of the signing of the Montreal Protocol on Substances that Deplete the Ozone Layer.
The ozone layer, a fragile shield of gas, protects the Earth from the harmful portion of the rays of the sun, thus helping preserve life on the planet.
International Day for the Preservation of the Ozone Layer aims and shows that collective decisions and action, guided by science, are the only way to solve major global crises.
The principal aim of the Montreal Protocol is to protect the ozone layer by taking measures to control total global production and consumption of substances that deplete it, with the ultimate objective of their elimination on the basis of developments in scientific knowledge and technological information.
The theme for the year 2021 is “Ozone for Life: 36 Years of Ozone Layer Protection.”
In the 1970s, various scientists raised the alarm when they discovered that human actions had created a hole in the protective ozone shield. The hole was caused by ozone-depleting gases (ODGs), which were used in aerosols, refrigerators, and air-conditioning coolants.
The thinning ozone layer caused increases in the risks of skin cancer, cataracts, and other negative consequences. Additionally, without the ozone layer, solar energy would damage plants, crops, and ecosystems. As a reaction to this threat, in 1985, the world’s governments adopted the Vienna Convention for the Protection of the Ozone Layer.
In 1994, the UN General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer through the resolution 49/114.
In support of the Montreal Protocol, the Kigali Amendment, which came into force in 2019, will work towards reducing hydrofluorocarbon (HFCs), greenhouse gases with powerful climate-warming potential and damaging to the environment.