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Old 08-17-2020, 12:39 PM   #13 (permalink)
freebeard
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The step leader is always downward.
Quote:
Originally Posted by Wikipedia
Positive and negative lightning
Cloud-to-ground (CG) lightning is either positive or negative, as defined by the direction of the conventional electric current from cloud to ground. Most CG lightning is negative, meaning that a negative charge is transferred to ground and electrons travel downward along the lightning channel. The reverse happens in a positive CG flash, where electrons travel upward along the lightning channel and a positive charge is transferred to the ground. Positive lightning is less common than negative lightning, and on average makes up less than 5% of all lightning strikes.[43]
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There are six different mechanisms theorized to result in the formation of downward positive lightning.
According to S0, positive strikes are increasing.
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