Clear air turbulence (CAT) related to mountain waves may extend how far above the tropopause?

Clear air turbulence (CAT) associated with mountain waves can significantly extend above the tropopause, and the correct answer indicates that this can occur up to 5,000 feet above this boundary. The tropopause is a critical layer in the atmosphere where the temperature lapse rate changes, and the presence of mountain waves can lead to significant turbulence as air flows over the mountains and interacts with the atmospheric conditions.

When winds encounter mountain ranges, they can create wave patterns that propagate upward, and turbulence can arise in the stable layers above the tropopause. This turbulence can penetrate well into the stratosphere, hence the potential for it to be felt up to 5,000 feet above the tropopause is a common consideration in aviation meteorology. This understanding is essential for pilots and dispatchers, as it influences flight planning, safety, and operational procedures.