What is Tropopause?
[[Image:Earth Atmosphere.svg|thumb|200px|right|The '''tropopause''' is between the troposphere and the stratosphere. The layers are '''not to scale'''.]] The '''tropopause''' is a boundary region in [[Earth]]'s [[atmosphere]] between the [[troposphere]] and the [[stratosphere]]. Here the air ceases to cool at -56.5[[Celsius|°C]] (-70[[Fahrenheit|°F]]), and the air becomes almost completely dry. Most commercial aircraft are flown in the tropopause. To put it into even simpler words, the tropopause is the interferance between the [[troposphere]] and the [[stratosphere]]. {{science-stub}} [[Category:Layers of Earth's atmosphere]]