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Which name is given to the ascending airstream ahead of a warm front?

  • A.The sting jet, which is a narrow descending airstream found in some rapidly deepening maritime storms
  • B.The warm conveyor belt
  • C.The cold conveyor belt, which flows rearward beneath the warm front and wraps around the low centre
  • D.The dry intrusion

Answer: B

The warm conveyor belt is the broad ascending flow of warm moist air that rises over the frontal surface and produces the characteristic comma cloud head. The cold conveyor belt is a separate lower level airstream, the dry intrusion is descending stratospheric air, and the sting jet is a descending feature associated with some explosively deepening cyclones. The conveyor belt model is the standard three-airstream description of a cyclone. The quantity that varies and the quantity that does not are worth naming before any substitution is attempted.

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