GTaudiophile
Lifer
Here's a question for the Greens. Why there instead of say over the US, Europe, or China?
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Why is there a hole in the ozone over Antarctica?
- Thread starter GTaudiophile
- Start date
matt426malm
Golden Member
It has to do with the air movement the "polar front" is a strong rotation of cold air around anartica. Air can not get out from Antartica. So it just sits there and lets the clorine free radicals (come for the CFC's) break up the ozone. Everywhere elses it gets to mix around.
It is a little more complicated but that's the jist of it.
Saulbadguy
Diamond Member
Because who would believe it if someone said it was over a populated area? Noone (out of the average people) has been to Antartica, so noone can say its there or not there.
thenerdguy
Senior member
Its the bottom of the world. Every thing falls down right??? 🙂
GTaudiophile
Lifer
I'd certainly like more information on this theory!
MoobyTheGoldenCalf
Golden Member
Make that 2 votes!
Saulbadguy
Diamond Member
Still early 🙂
Besides, this was once a big deal, and now noone cares about it anymore. And like said before, there could have always been one there. I'm just speculating.
XZeroII
Lifer
We only started recording data in the late 70's and that's when we found it. Was it there 100 years ago? No one knows. A huge theory about where the hole comes from is that is has always been there. Ozone is created when sunlight hits the atmosphere, and everyone knows that Antarctica (and the north pole) only get sunlight for half of the year, then it's dark for a half of a year. This lack of sunlight would naturally cause there to be less ozone in those areas for certain parts of the year. This is not to say that people don't contribute, but nature could be 90% responsible, while man is only 10% (those figures are made up). Point is, we don't know.
Saulbadguy
Diamond Member
This is good information.
Hayabusa Rider
Admin Emeritus & Elite Member
There is a science known as atmospheric chemistry and the mechanism for catalytic degradation of ozone by CFC's is understood. CFC's in the atmosphere have been documented. While you are correct in saying the proportion of manmade ozone breakdown vs. natural mechanisms is unknown, the lower limit of reasonable models suggests that a significant portion of loss is due to human cause. Perhaps we are responsible for 50 percent of the loss, and that would result in a significant increase in UV penetration.
Saulbadguy
Diamond Member
You can't second something thats already been seconded, moron. Also, read the whole thread.
It might have something to do with the rotation of the Earth on it's axis and the relative speed of a point on the surface of the Earth and the relation of the movement of the atmosphere to the movement of the Earth's surface.
like if you stand 840 feet from the south pole you will travel 1 mile in 24 hours, but if you stand on the equator you will travel a lot farther in 24 hours. The atmoshpehere behaves in a similar fashion.
So because it's relatively statioery the atmodshpere at the sout poll gets more effects from CFCs.
like if you stand 840 feet from the south pole you will travel 1 mile in 24 hours, but if you stand on the equator you will travel a lot farther in 24 hours. The atmoshpehere behaves in a similar fashion.
So because it's relatively statioery the atmodshpere at the sout poll gets more effects from CFCs.
It all has to do with something called the Grasshopper Effect. It causes warm air from warmer climates to "jump" from areas of smaller latitude to those of greater latitude (ie. to the poles). With it go all the pollution (like CO2, etc), which displaces the ozone making a hole. Hope that helps a bit. If you use Google you can find a bit more info about this type of effect.