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Above which height does a parcel rise without any further forcing?

  • A.The level of neutral buoyancy
  • B.The equilibrium level, at which the rising parcel becomes cooler than its surroundings and stops ascending
  • C.The level of free convection
  • D.The lifting condensation level, at which a parcel lifted from the surface first reaches saturation above

Answer: C

Above the level of free convection the parcel is warmer than its environment and rises without further forcing, so reaching that level is what convective initiation requires. The energy needed to get there is the convective inhibition. The equilibrium level, where buoyancy vanishes again, marks the anvil top and is a separate quantity.

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