An upper-air front involves downward motion of the
A) tropopause.
B) stratopause.
C) low-level jet.
D) both tropopause and low-level jet

Question

Quizplus · Accepted Answer

An upper-air front involves downward motion of the tropopause, which is the boundary between the troposphere and the stratosphere. This boundary can become distorted by the movement of upper-level weather systems, which can cause a bulging or flattening of the tropopause. Downward motion of the tropopause can result in the transport of stratospheric air into the troposphere, which can affect both weather and air quality.

An Upper-Air Front Involves Downward Motion of the