CFCs

Role of polar stratospheric clouds in ozone depletion

Polar stratospheric clouds (PSCs) Chlorofluorocarbons (CFCs) Ozone layer Ozone depletion Montreal Protocol Polar stratospheric clouds (PSCs) are clouds that form in the stratosphere, the layer of Earth’s atmosphere above the troposphere. PSCs are made up of ice crystals and other particles. They are important because they can help to catalyze the reactions that destroy ozone. … Read more

chlorofluorocarbons (CFCs)

Chlorofluorocarbons (CFCs) are a group of man-made chemicals that were once widely used in refrigerators, air conditioners, and aerosol cans. CFCs are very stable and do not break down easily in the atmosphere. When CFCs reach the upper atmosphere, they are broken down by ultraviolet radiation and release chlorine atoms. Chlorine atoms react with ozone … Read more