Ozone depletion describes two related events observed since the late s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. Ozone layer - Tropospheric ozone depletion - Scientific Assessment of. Ozone depletion. Ozone depletion, gradual thinning of Earth's ozone layer in the upper atmosphere 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. Learn about the causes and effects of Ozone Depletion.
Low temperatures, increase in the level of chlorine and bromine gases in the upper stratosphere are some of the reasons that leads to ozone layer depletion. But the one and the most important reason for ozone layer depletion is the production and emission of chlorofluorocarbons (CFCs). 12 Feb - 3 min - Uploaded by National Geographic Far above Earth's surface, the ozone layer helps to protect life from harmful ultraviolet. Read chapter The Ozone Depletion Phenomenon: Like an infection that grows more and more virulent, the continent-size hole in Earth's ozone layer keeps ge.
The stratospheric ozone layer is Earth's “sunscreen” – protecting living things from too much ultraviolet radiation. The emission of ozone depleting substances . Environmental Effects of Ozone Depletion and Its Interactions with The Connection between Ozone Layer Depletion and UVB Radiation. Ozone Destruction. NASA Earth Observatory (Illustration courtesy Barbara Summey, SSAI). Understanding Stratospheric Ozone Depletion. Our understanding of.