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Which change to that sounding would allow showers to develop?

  • A.Deepening the moist layer and weakening the inversion
  • B.Strengthening the inversion, which would concentrate the moisture and therefore produce deeper cloud beneath it
  • C.Drying the moist layer
  • D.Lowering the cloud base by increasing the humidity at the surface without altering the profile above it

Answer: A

Removing or weakening the cap allows thermals to penetrate and the cloud to grow vertically, and a deeper moist layer supplies the water for precipitation. Surface heating and large scale ascent both act in this direction through the day. Strengthening the inversion has the opposite effect, confining the cloud more tightly than before.

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