Tropopause used in a sentence

Tropopause in a sentence as a noun

The 14000m one is normal, this is called the tropopause.

In some stronger thunderstorms, the upward vertical motion in them can "punch" through the tropopause and will actually penetrate into the stratosphere before stopping their upward growth.

The article doesn't mention the water vapor lifetime in stratosphere... But they do mention that cryoplanes should not fly close to tropopause, for the fear of water vapor escaping to stratosphere.