inothernews: lickystickypickywe: “The upward branching in this photo shows that the Eiffel Tower actually initiated the discharge,” says lightning researcher Richard Blakeslee of the NASA Marshall Space Flight Center. “In other words, instead of starting in the cloud and coming to ground, this flash started when the tower ‘launched’ a leader that propagated upward toward the cloud (which still served as the source of the electric field needed to get the process going). As the leader ascended, it branched out. Eventually one of the branches reached a region of sufficient charge to ‘short out the cloud’ and produce the return stroke pictured above.” According to Martin Uman’s classic text The Lightning Discharge, upward-initiated discharges are “relatively rare,” accounting for less than 1% of all lightning, “and generally occur from mountain tops and tall man-made structures.” Picture by Hakim Atek Oh suuuuuuuure, blame the French!!!  :-) Blame the French!
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inothernews:

lickystickypickywe:

“The upward branching in this photo shows that the Eiffel Tower actually initiated the discharge,” says lightning researcher Richard Blakeslee of the NASA Marshall Space Flight Center. “In other words, instead of starting in the cloud and coming to ground, this flash started when the tower ‘launched’ a leader that propagated upward toward the cloud (which still served as the source of the electric field needed to get the process going). As the leader ascended, it branched out. Eventually one of the branches reached a region of sufficient charge to ‘short out the cloud’ and produce the return stroke pictured above.”
According to Martin Uman’s classic text The Lightning Discharge, upward-initiated discharges are “relatively rare,” accounting for less than 1% of all lightning, “and generally occur from mountain tops and tall man-made structures.”
Picture by Hakim Atek

Oh suuuuuuuure, blame the French!!!  :-)

Blame the French!

Source: meteorologistblog.blogspot.com

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