Lightning current and luminosity at and above channel bottom for return strokes and M-components

We measured current and luminosity at the channel bottom of 12 triggered lightning discharges including 44 return strokes, 23 M‐components, and 1 initial continuous current pulse. Combined current and luminosity data for impulse currents span a 10–90% risetime range from 0.15 to 192 µs. Current rise...

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