Depletion Of The Arctic Poles Ozone Hole Video
Antarctic Ozone Hole Depletion Of The Arctic Poles Ozone Hole
Ozone is a gas that is present in the ozone layer in the stratosphere of the Earth. There, it will absorb almost all ultraviolet light which is harmful to many organisms.
Introduction
The term Ozone depletion can refer to a number of distinct, but related phenomena:. The details of polar ozone hole formation differ from that of mid-latitude thinning, but the most important process in both is catalytic destruction of ozone by atomic halogens. The main source of these halogen atoms in the stratosphere is photodissociation of man-made halocarbon refrigerants CFCsfreonshalons.
These compounds are transported into the stratosphere after being emitted at the surface. Both types of ozone depletion were observed to increase as click here of Halocarbons increased.
CFCs and other substances contributing to this effect are referred to as ozone-depleting substances ODS. As a result, the Montreal Protocol has been adopted.
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The treaty bans the production of CFCs, halons as and other ozone-depleting chemicals such as carbon tetrachloride and trichloroethane. The biological consequences of this change in ozone levels may include an increases in skin cancercataractsdamage to Depldtion, and the reduction of plankton populations in the ocean.
Estimates of how quickly the ozone layer will regenerate vary by about two decades. NASA estimated inthat it wil take to for the ozone layer in Antarctica to recover to the level before human-induced thinning.
According to the World Meteorological Organizationthe state of the ozone layer over Antarctica will not change noticeably in the next twenty years. The state before will be reached between and25 years later than predicted in ]
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