why there is a reduction in the ozone layer in the Antarctic region?

Question

why there is a reduction in the ozone layer in the Antarctic region?
can u pls explain why?...
what causes the ozone layer to reduce?...
what are the factors that are affecting it?..

Answer 1

This phenomenon is the result of emissions, mainly in the northern hemisphere, of chlorofluorocarbons (CFCs) and halons. These gases are in widespread use in refrigeration, industrial solvents and fire control. If the provisions of the Montreal Protocol on Substances that Deplete the Ozone Layer of 1987 are strengthened and followed, there is a prospect that the Antarctic ozone hole will be repaired by 2100.

Ozone is destroyed in the Antarctic spring by chlorine formed during the sunless winter. T he chlorine is generated by an unusual reaction between stable molecules, on the surface of small stratospheric cloud particles which can only form in the intense cold of the polar winter. The stable molecules obtain their chlorine from CFCs which have previously been broken up in sunlit regions.

Answer 2

The first answer is correct. The good news...according to Paul, the Senior Climatologist Lecturer at Penn State, the ozone hole is beginning to close up. [See source.] It's a bit too early to say this is due to the world's reduction in using fluorocarbons, but the signs are promising. We can make a difference it seems.