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What is atmospheric ozone?

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Anonymous

15y ago
Updated: 8/17/2019

That depends on whether you mean "good" upper-level or "bad" ground-level atmospheric ozone.

Upper-level ozone is the product of the absorption of UVB rays by upper-atmosphere oxygen or O2. During the absorption process, the O2 molecule is split into two oxygen atoms. These atoms then recombine with an O2 molecule to create O3 or ozone.

Therefore, upper-atmosphere ozone is not the earth's protective shield against harmful UV rays. O3 is the by-product of the absorption of UV by regular O2 or oxygen. The real hero in this story is oxygen, not ozone which is always bad, but harmless when floating around way above us.

Ground-level ozone is the by-product of nitrogen oxide combining with "volatile organic compounds" on hot, sunny days. Volatile organic compounds, or VOCs, are gasses emitted by an extremely wide variety of chemicals such as everyday household cleaners and paint.

VOCs may be either naturally-occurring or man-made, or both, and have a low boiling point meaning they evaporate readily into the air we breathe.

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Wiki User

15y ago

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