Evolution of gigantic jets at high temporal and spatial resolution
Document typeConference lecture
Rights accessOpen Access
Gigantic Jets (GJ) are lightning discharges between the cloud and the lower ionosphere, which manifest as leaders at low altitude and transition to streamers as they rise in altitude. The evolution has never been imaged before at rates faster than 1/60th second. We ran a campaign in northern Colombia with an intensified high-speed camera at 900 images per second to study the development. The image sequence reveals a weakly luminous stepwise upward propagation from the cloud top to 40 km altitude, after which continuous and much brighter branches grow to the ionosphere in 2 ms. We show the stepping to be consistent with pilot system propagation in streamers.
CitationVan Der Velde, O.; Montanya, J.; Lopez, J. Evolution of gigantic jets at high temporal and spatial resolution. A: International Conference on Atmospheric Electricity. "ICAE 2018 conference proceedings: XVI International Conference on Atmospheric Electricity: 17-22 June 2018, Nara city, Nara, Japan". 2018, p. 1-3.