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Positive cloud to ground flashes differ from negative ones in that they

  • A.are considerably more common than the negative flashes
  • B.carry no current down to the ground at all
  • C.are restricted to tropical latitudes alone
  • D.are less common but often carry greater charge transfer

Answer: D

They typically originate in the upper positive charge region, often in the stratiform area of a system. Their long continuing currents make them disproportionately effective at starting fires. Wildfire ignition is strongly weighted towards positive flashes.

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