View Full Version : Discussion: South Ozone Hole Returns

2005-Aug-30, 04:30 PM
SUMMARY: The ozone hole above the South Pole has returned, and it's on track to be one of the biggest on record. At this time, the hole is the size of Europe, but it will probably continue growing during September - bigger holes appeared in 1996 and 2000. The size of the ozone hole and the time of its appearance depends on the weather conditions in the southern hemisphere.

View full article (http://www.universetoday.com/am/publish/ozone_hole_as_big_as_europe.html)

What do you think about this story? Post your comments below.

2005-Aug-30, 10:09 PM
I have seen a claim in print some 7 years or more ago that volcanic eruptions particularly in South America are responsible for many thousands of tonnes of chlorine in the upper atmosphere and that their contribution to atmospheric chlorine far exceeds the contributiion from CFC's. Even though CFC's may be more catalytic in nature than ordinary chlorine the main culprit suggested as being responsible for ozone destruction in this article published recently appears to be chlorine created from CFC's which if the older information is true would seem to be a misleading statement. Also why is it that so much publicity is given over to the ozone hole over the antarctic when a simillar hole perhaps affecting more human life is created over the arctic each year. If this hole is smaller then would it be reasonable to assume that there a correlation with less volcanic activity in that hemisphere?

David Looke
2005-Aug-30, 11:29 PM
This is just plain bad science. In fact to credit it with the term "science" is being generous.
Even the included graphic shows no hole in the ozone. Sure there's a depletion zone where the ozone is thinner, but that's not a hole. But the word "hole" is so much more emotional and exciting -- unfortunately it's not accurate, but it does get people attention like any other scare mongering.
Can we expect a purely emotional response in other Universe Today articles? The alternative would be to try and put the facts! A rather novel idea I know.