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What is the Ozone Hole? The ozone hole is not technically a “hole” where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic that happens at the beginning of Southern Hemisphere spring (August–October).
5 days ago · What is the ozone hole? Each year for the past few decades during the Southern Hemisphere spring, chemical reactions involving chlorine and bromine cause ozone in the southern polar region to be destroyed rapidly and severely. This depleted region is known as the “ozone hole”.
Mar 22, 2022 · Their discovery, the thinning of the ozone layer over Antarctica, came to be known as the ozone hole. As news of the discovery spread, alarm rippled around the world.
- Kira Walker
Sep 16, 2021 · The ozone depletes and forms a hole over the Antarctic in the Southern Hemisphere’s spring, which is from August to October. It typically reaches its largest size between mid-September and...
The ozone hole is formed each year in the Southern Hemisphere spring (September-November) when there is a sharp decline (currently up to 60%) in the total ozone over most of Antarctica. During the cold dark Antarctic winter, stratospheric ice clouds (PSCs, polar stratospheric clouds) form when temperatures drop below -78C.
Jul 24, 2023 · Special chemical reactions can occur on these clouds and destroy ozone and form a hole in the Antarctic spring. The ozone-depleting gases have been regulated by the Montreal Protocol, which is an international agreement signed by all countries around the world.
5 days ago · Ozone is a colorless gas. Chemically, ozone is very active; it reacts readily with a great many other substances. Near the Earth’s surface, those reactions cause rubber to crack, hurt plant life, and damage people’s lung tissues. But ozone also absorbs harmful components of sunlight, known as “ultraviolet B”, or “UV-B”.
