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Discussion

Under the dynamic hypothesis, the benefit of seeding comes from

  • A.conversion of supercooled water to ice with no other effect
  • B.cooling of the cloud that suppresses further convection
  • C.removal of the condensation nuclei from within the cloud
  • D.latent heat release that invigorates the updraught

Answer: D

Freezing a large mass of supercooled water releases heat and increases buoyancy. The cloud then grows deeper and may process considerably more water than it otherwise would have. The effect sought is far larger than the static one.

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