Stratopause

In space and astronautical engineering, stratopause is the boundary between the stratosphere and the mesosphere, located at an altitude of approximately 50-55 km above the Earth's surface. It is characterized by a temperature minimum, where the atmospheric temperature stops increasing with altitude and starts decreasing. The stratopause is an important region for studying atmospheric dynamics and chemistry, as it is where the ozone layer is located and where many chemical reactions occur. It is also a critical region for understanding the effects of climate change on the Earth's atmosphere.
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