Sep 22, 2013
Zaid

Protect the ozone to safe the green

Ozone Layer and Montreal Protocol

Everything in this world is somehow covered in a sheath for protection. In same way the world is protected from the harmful rays of sun by a sheath of its own the ozone layer. But the bad news here is that it is depleting at an alarming rate of 4 per cent per decade.

This decreament in the content of ozone and thinning of ozone can cause sun burns, skin diseases, skin cancer, cataract and other eye diseases, infections and reduces immunity of human bodies, decrease in growth of vegetation and plants, loss of nutritional values and danger to sea life and ecosystem. Refrigerators, air conditioners, perfumes are the substances, that are having the choloroflorocarbon, are the culprits of this awful crime.

Ozone in upper enviroment works as a protection of the world but at ground level, ozone can be unhealthy—in fact certain factors of it mix up and forms a dangerous element called “smog.” Smog formation requires three ingredients:
             1) Nitrogen oxides, which come almost from man-made)sources such as automobile exhaust and power plants and all smoke producing things.

            2) Sunlight; and

            3) Volatile organic compounds (VOCs), both naturally occurring and man-made.

The main ODS (ozone depleting substances) that has been highlighted in  the Montreal Protocol are chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, carbon tetrachloride and methyl bromide. However with increasing awareness,  the global consumption of ODS has been reduced by some 98% since countries has started to  take the Montreal Protocol on a serious note. And in lights of that the atmospheric concentration of the most aggressive types of ODS is reducing and the ozone layer is showing some recovery. Nevertheless, it is not expected to recover fully, even if same protocol is followed, before the second half of this century.

 

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