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A morning shows a strong surface inversion, a stratus deck, and visibility reduced in haze. What does this suggest about the air mass?
- A.The air is highly unstable and thunderstorms are forming
- B.The air is dry and visibility should be excellent
- C.The air is stable and vertical mixing is suppressed
Correct answer
C. The air is stable and vertical mixing is suppressed
Why
Inversions and layered cloud with haze are signatures of stability. Pollutants and moisture stay trapped near the surface until heating or a weather change breaks the inversion.
Source: FAA-G-8082-22 Ch. 3 · ACS knowledge area: Aviation Weather Sources and Effects · From the Aviation Weather practice bank (WEA-058).