stratosphere


stratosphere

Layer of the atmosphere that is located above the troposphere. The stratosphere extends from a lower boundary of about 11 mi (17 km) altitude to an upper boundary (the stratopause) at about 30 mi (50 km). The ozone layer is a part of the stratosphere.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on stratosphere, visit Britannica.com.

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