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Ultraviolet corona discharges on treetops during storms
Penn State experts in meteorology and atmospheric science made their way down the nation’s eastern coast in June 2024 in search of corona discharges, a long-hypothesized atmospheric weather phenomenon where miniscule pulses of electricity dance at the tips of tree leaves, causing the canopy to glow in the ultraviolet (UV). They found them and captured the phenomenon on film for the first time.
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