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I am under the impression that variation in that antarctic hole is pretty much out of our control once halocarbons were addressed. Not so?
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CFCs/halocarbons are inert, so they can't react with ozone. Has anyone asked him/herself why there's only a hole over Antarctica, when halocarbons were released all over the world?
Another fact is that from the produced CFC's only 1% was released whose chlorine content is about 7,500 tons. Mother Nature produces 650 MILLION ton chlorine annually, 90% comes from the sea.
Besides ozone is a lousy UV filter, oxygen and nitrogen filter 99%, ozone: 0,000003%. I remember Al Bore saying the lambs in Patagonia got blind because the ozone hole...
