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physics.ao-ph2025
Similarities in the Initiation of Upward Positive and Downward Negative Lightning Flashes
Toma Oregel-Chaumont, Mohammad Azadifar, Antonio Šunjerga +2
This study examines the relationship between upward negative stepped leader pulses in upward positive lightning and preliminary breakdown pulses (PBPs) in downward negative lightni…
physics.plasm-ph2025
Underlying Physical Mechanisms in Upward Positive Flashes
Toma Oregel-Chaumont, Antonio Šunjerga, Jérôme Kasparian +2
This study presents the first observation of a mixed mode of charge transfer during an upward positive flash, which was initiated from the Säntis Tower in Switzerland. High-speed c…