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Causes of Depletion of Ozone layer

Causes of Depletion of Ozone layer

It is now established that chloroflouro carbon (CFC) chemicals evolved from various refrigerants, coolants and propellants are the primary reasons for depletion of ozone. CFC are a group of chlorine bearing gases of low specific gravity. They rise to stratosphere and mesosphere. Due to ionising solar radiation in these layers, (which is the primary reason for production of ozone) fresh chlorine gas is produced from CFCs. This nascent chlorine gas has the capacity to react with ozone and bring down the level of ozone substantially.
The concept of ozone depletion is new. But study of international ozone trendis being made since 1988, when international ozone commission was established. Extensive ozone assessment facilities were established under International Middle Atmospheric Programme (IMAP) in India to study ozone along with number of other green house gases.

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