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by wickedwillie on March 20th, 2004

wickedwillie

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In what part of the Earth's atmosphere is the ozone layer?

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  • by wickedwillie on March 20th, 2004

    wickedwillie

    The ozone layer is a part of the stratosphere. The stratosphere is the layer of Earth's atmosphere which, at the equator, is situated between about 17 km and 50 km altitude above the surface, while at the poles it starts at about 8 km altitude due to the lower tropopause height caused by the lower tropospheric temperature there.

    The concentration of atmospheric ozone in the ozone layer varies by a large factor worldwide, being thicker near the equator and thinner at the poles. Ozone levels, over the northern hemisphere, are dropping by ~4% per year. Approximately ~4.6% of the Earth's surface is not covered by the ozone layer; these are the ozone holes.

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