Tropopause

The tropopause extends to high altitudes in the tropical latitudes and extends to low altitudes in the polar latitudes.

The tropopause is the atmospheric boundary that demarcates the lowest two layers of the atmosphere of Earth – the troposphere and stratosphere – which occurs approximately 17 kilometres (11 mi) above the equatorial regions, and approximately 9 kilometres (5.6 mi) above the polar regions.

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