Browsing: Ozone

Ozone is a molecule composed of three oxygen atoms (O3) and is a crucial component of the Earth’s atmosphere. It exists primarily in two layers of the atmosphere: near the surface, where it is a pollutant and a key component of smog, and in the stratosphere, where it forms the ozone layer, which protects life on Earth by absorbing the majority of the sun’s harmful ultraviolet radiation. The stratospheric ozone layer is located approximately 10 to 30 miles above the Earth’s surface and is critical for maintaining the environmental and health safety of the planet. However, human activities have led to the depletion of this layer, notably through the emission of chlorofluorocarbons (CFCs) and other ozone-depleting chemicals. The recognition of the damaging effects of ozone depletion led to international agreements such as the Montreal Protocol, which has successfully curbed the release of the most harmful substances. At ground level, ozone emerges as a secondary pollutant formed by the reaction of sunlight with pollutants like volatile organic compounds and nitrogen oxides, impacting human health and the environment.