Let’s explore the ozone layer for the International Day for the Preservation of the Ozone Layer today!

What is the ozone layer?

Earth’s atmosphere is made up of 6 layers. The stratosphere (which is the second layer) contains the ozone layer. The ozone layer acts as a barrier between earth and the sun’s UV rays, absorbing about 98% of ultraviolet light.

Why do we need to protect the ozone layer?

Over the years, pollution has caused the ozone layer to become thinner. Chemicals known as Chlorofluorocarbons (CFCs) are the biggest contributor to this ozone layer breakdown. CFCs are mostly found is aerosols, refrigerators, and plastic products. According to National Geographic, about 90% of CFCs currently in the atmosphere were released by industrialised countries in the Northern Hemisphere!

However, since this was learnt, many countries took steps to tackle CFCs and protect our earth.

Protecting the ozone layer

On 16th September 2021, it has been 36 years since the signing of the Vienna Convention, which was adopted and signed by 28 countries on 22 March 1985. Two year later in September 1987, this led to the drafting of The Montreal Protocol on Substances that Deplete the Ozone Layer.

Related Information

If you’d like more information on the environment and how you can help to protect earth, check out TheSprout’s environment info page.