Spatiotemporal Correlation between Artificially Triggered and Adjacent Natural Lightning Flashes

A triggered lightning flash (TLF) provides a unique perspective on the relationship between spatiotemporal proximity flashes, owing to its determined location and time, convenient direction measurement, explicit association with charge region. In this study, 3-D location, current atmospheric average electric field (AAEF) data were used investigate of TLFs (68 samples in South China) adjacent natural flashes (NLFs). The TLF-related negative regions had an core height 5.2 km ambient temperature approximately −1.7 °C. effective region (the density that was high enough for occurrence discharge) can be equivalent circle diameter 10.3 km. For 93% (all) TLFs, no NLF channel (initiation) located within 5 flash-triggered position, s before after their occurrence. situations where spatiotemporally NLFs occurred, they either associated different layers or same layer but positions. Most caused significantly sharp AAEF changes just not charge. Therefore, recovery AAEF, which has usually been referenced as timing choice triggering operation, directly interval occurred 10 min neutralized 145 s.