I know that there is one over Antarctica, which has a lot of people concerned because that will only further the crisis of melting glaciers, as well as disrupt the only un-touched ecosystem left.
The Antarctic ozone hole is an area of the antarctic stratosphere in which the recent ozone levels have dropped to as low as 33%. The ozone hole occurs during the Antarctic spring, from September to early December, as strong westerly winds start to circulate around the continent and create an atmospheric container. The primary cause of ozone depletion is the presence of chlorine containing source gases. The role of sunlight in ozone depletion is the reason why the Antarctic ozone depletion is greatest during spring.
The Ozone hole is located above the region of Antarctica. Each spring in the stratosphere above Antarctica, the ozone layer is depleting due to chemical processes. Over the course of 2-3 months, about 50% of the total amount of ozone in the atmosphere disappears. At some levels, there is a 90% loss, and this hole has come to known as the Ozone hole.
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