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Originally Posted by Hippikos
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There´s no such thing as a "hole", just a mere decrease in ozone levels at some altitude over the South Pole.
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From Dave's "Goddard" link;
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Scientists from NOAA's Earth System Research Laboratory in Boulder, Colo., use balloon-borne instruments to measure ozone directly over the South Pole. By Oct. 9, the total column ozone had plunged to 93 DU from approximately 300 DU in mid-July. More importantly, nearly all of the ozone in the layer between eight and 13 miles above the Earth's surface had been destroyed. In this critical layer, the instrument measured a record low of only 1.2 DU., having rapidly plunged from an average non-hole reading of 125 DU in July and August.
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That would seem to agree that the "hole" is a thinning, rather than an absence, we would normally associate with "hole". I suspect the use of the word "hole", was a media concoction.
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I´m interested to learn these. CFC and PCB´s are banned for decades, still ozone holes occur, exclusively over the Antarctic.
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From Dave's "this link";
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CFC's take up to 15 years to reach the stratosphere but can stay in the atmospere from 50-200 years. This means that the relatively small depletions in ozone seen now will get much larger as CFC's that have already been released accumulate in the stratosphere.
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Originally Posted by Hippikos
Chlorine atoms can ONLY react with ozone on the hard ice crystals in the surface of the SPC (stratosphere polar clouds) in Antarctica. As SPC forms ONLY in Antarctica during the winter and spring (they do not form over the Arctic, because the Arctic’s stratosphere is not cold enough), the logical conclusion is that chlorine do not react with the ozone layer in the rest of the world. That’s a fact. But recognizing this fact would show the ozone depletion theory is a fake, and would deprive scientists milking the “ozone scare cow” of the so much needed money to survive.
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Wouldn't that be like a swimming pool filter cleaning the water and dumping it in one spot? Eventually the water gets circulated throughout the pool and it all gets cleaner.
So just because the ozone is only being destroyed over the Antarctic, it's still depleting the total we have, unless it's being produced fast enough to make up for that loss, elsewhere.
Thanks to both Youze Guys for the insightful input.....and Dave, thank your boss for us.