If in 30 years the ozone hole is no smaller, will you still believe the CFC theory?

Question

http://www.esa.int/esaCP/SEMQBOKKKSE_index_0.html

No, it's not getting smaller.

Answer 1

A few facts on the ozone "hole".

1) It's size varies from year to year.

2) It's not a permanent feature.  It opens up in the Antarctic winter for about 2 months, then closes again when warmer temperatures arrive.

3) It's average annual size HAS shrunk significantly since CFCs were largely banned.

While CFCs are probably not the only thing contributing to the depletion of the ozone layer, they do have a significant impact.

Answer 2

i am asking did we r living inside a closed globe or not ?if the answe is ya then we must take care fo every single violation to our earth globe.

Answer 3

Yes the ozone layer is so high that almost nothing can get up there. CFC never even came close. The ozone layer is made where the solar winds collide with the earth's magnetic field. The hold at the poles is just the shape of the magnetic field.  

Answer 4

You didn't read the whole article, did you?

"The thinning of the ozone is caused by the presence of pollutants in the atmosphere such as chlorine, originating from man-made pollutants like chlorofluorocarbons (CFCs), which have still not vanished from the air despite being banned under the Montreal Protocol (1987). "

It's right there in the article at the URL you provided.

Answer 5

Had you read the entire article you linked, you may have noticed this part:

"The thinning of the ozone is caused by the presence of pollutants in the atmosphere such as chlorine, originating from man-made pollutants like chlorofluorocarbons (CFCs), which have still not vanished from the air despite being banned under the Montreal Protocol (1987)."

CFCs have a long lifetime in the atmosphere.   If the hole does not continue to shink, evaluating the CFC theory will depend on how CFC emissions continue in the future (there are still developing countries which use CFCs).

By the way, your article discusses a one-year variation (2006).  Here is a similar article from 2007:

"The gaping hole in Earth's ozone layer has shrunk 30 percent in size compared to last year...natural variations in temperature and atmospheric changes are responsible for the decrease in ozone loss, and is not indicative of a long-term healing."

http://www.livescience.com/environment/0...

Just like 2006 wasn't indicative of a lack of long-term healing.

The ozone layer isn't expected to fully recover until 2068.

"Newman and his colleagues also found that the ozone hole has not started to shrink as much as anticipated. They figure it will not start shrinking a lot until 2018, after which time the recovery should proceed more quickly."

http://www.livescience.com/environment/0...

So in 30 years we would expect the hole to be smaller, and if it's not, we'll have to examine why it's not.  I wouldn't rule out CFCs immediately, because it's not a simple black and white issue.