Ozone Layer Depletion - Cause, Effects, And Solutions.
Over the last hundred years, the ozone layer has been damaged by man-made chemicals, especially CFCs (chlorofluorocarbons), which were used mainly in aerosol sprays and refrigerants. CFCs are broken down in the upper atmosphere when they react with the ozone, causing ozone depletion.
Ozone depletion, gradual thinning of Earth’s ozone layer caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. The thinning is most pronounced in the polar regions, especially over Antarctica.
Depletion of the Ozone Layer The atmospheric ozone layer protects all living things from the harmful effects of the Sun. In recent years however, much damage has been caused to the ozone layer, causing it to decrease in size. The depletion of the ozone layer has and will continue to have many detrimental effects on all living things on this planet.
Source: European Environment Agency For the status of the currently ongoing ozone hole, you can visit the Copernicus web site. Effects of ozone depletion for humans and the environment. Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health.
Unfortunately, CFCs can eventually find their way into the Earth's atmosphere and the ozone layer. Once they get there they destroy ozone molecules and cause the ozone layer to become depleted or thinner. CFCs Get Banned In 1974 scientists Sherry Rowland and Mario Molina discovered the link between the depletion of the ozone layer and CFCs.
Ozone is a triatomic form of oxygen (O 3), found in the Earth’s atmosphere. A combination of low temperatures, elevated chlorine, and bromine concentrations in the upper stratosphere are responsible for the destruction of ozone. The production and emission of chlorofluorocarbons (CFCs), is the leading cause of ozone layer depletion.
Chlorine atoms catalyse the decomposition of ozone and contribute to the hole in the ozone layer. Appreciate that results of research by different groups in the scientific community provided evidence for legislation to ban the use of CFCs as solvents and refrigerants.