[IRCA] Slightly OT - Upward Lightning Flashes

[Bruce Portzer <bportzer@xxxxxxxxxxx>]

Not quite on topic but close to it - a group of scientists has 
documented lightning flashes going upward from the top of a thunderstorm 
into the ionosphere.  I can't say I've ever heard of such a thing before.

http://sciencenow.sciencemag.org/cgi/content/full/2009/824/1

The article doesn't say what effect, if any, this phenomenon might have 
on radio propagation.

Bruce
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