There are lots of countries that subdivide themselves into states. The internet and Wiki.Answers is global.
Ozone as pollution is a problem as long as there is violet or more energetic light to make ozone, and NOx from combustion. It is a problem for humans when it is also hot. So "about the length of the summer", give or take extra traffic from tourists or students.
Winter, to early spring.
Depletion is depletion, everywhere. The size and duration of the ozone hole is a symptom of both how much water surface is located below it, and contaminants that require visible light to be photoactivated into ozone destruction. Don't be distracted by the size of the ozone hole.
The phone number of the Ozone Park is: 718-845-3127.
The address of the South Ozone Park is: 128-16 Rockaway Boulevard, South Ozone Park, 11420 2996
See "What is causing the depletion of the ozone layer?"
Winter, to early spring.
Ozone hole occurs in the southern hemisphere. It is because westerly's carry CFC's there.
The ozone is depleted at the poles in southern hemisphere. It is due to cold climate which accelerates the situation.
Winters produced less ozone. There is depletion in winters.
At the south pole for 2008, the largest ozone "hole" size (27 million square kilometers) was on September 12, the least ozone on a vertical path (100 Dobson units as compared to ~220 for summer values) occurred on October 4. The north pole should have a similar feature about six months earlier / later, when the Sun is not shining on the north pole, then starts shining on it. Note that an "ozone hole" is not truly a hole, as there is still some ozone in the atmosphere there.
The ozone layer over southern Africa has experienced some recovery due to international efforts to reduce ozone-depleting substances. However, localized ozone depletion events can still occur in the region due to factors like industrial pollution or biomass burning. Overall, continued monitoring and control of ozone-depleting substances are important to ensure the protection of the ozone layer over southern Africa.
The ozone layer is being depleted globally, not just in the southern hemisphere. The Antarctic ozone hole, located over the southern pole, is more pronounced due to unique atmospheric conditions and chemicals like chlorofluorocarbons (CFCs) that accumulate in the stratosphere. The depletion affects the entire planet's ozone layer, with varying degrees of severity in different regions.
Over the Southern and Northern poles.
Antarctica is subjected to the world's largest ozone hole, known as the Antarctic ozone hole. This hole is a seasonal phenomenon that occurs in the stratosphere above Antarctica during the Southern Hemisphere spring.
Yes, the ozone has shifted over time. It changes with weather each season.
The hole is in the southern Hemisphere. It is at the south pole.
US level fall with season. It is due to ozone depletion different in different weathers.