Stratospheric Ozone Depletion in AP Environmental Science

Definition

The gradual thinning of the protective layer of ozone in the Earth's stratosphere due to the release of certain chemicals into the atmosphere. This depletion allows more harmful ultraviolet (UV) radiation from the sun to reach the Earth's surface.

Related terms

Chlorofluorocarbons (CFCs):

Synthetic compounds commonly used in refrigerants, aerosol propellants, and foam-blowing agents. CFCs are major contributors to stratospheric ozone depletion.

Montreal Protocol:

An international treaty signed in 1987 with the goal of phasing out substances that deplete the ozone layer, including CFCs. It has been successful in reducing global production and consumption of these harmful chemicals.

Ultraviolet (UV) Radiation: High-energy electromagnetic radiation emitted by the sun. Excessive exposure to UV radiation can cause various health issues such as skin cancer and cataracts.