This Thursday, August 4, awas captured by an amateur photographer above a d’ in Texas, a very rare phenomenon to observe. First registered in 1989, the blue jets belong to the , also called TLE, to which the red sprites or leprechauns also belong. They appear during particularly intense, and can reach an altitude of up to 50 km! If they look like attention, their origin is different.
Spectacular “blue jet” #bluejet price one #Arizona#USA : this luminous phenomenon is rarely photographed, because it is very ephemeral (less than 1 second). It occurs above the cloud of#thunderstorm50 km above sea level, with the electricity of the storm and the dinitrogen present in the stratosphere https://t.co/XTbokmKVRH
— Karine Durand (@KarineDurandpro) August 5, 2021
Unlike lightning, which corresponds to electrical discharges betweenor within the cloud, the blue jets start from the and head towards . They are made of cold plasma, their blue being due to of the d’ .
Contrary to what was thought until recently, they are not very rare. However, due to their location, observing them is a challenge! “It might have something to do with their blue color. L’earth naturally diffuses the , making them harder to see. Blue jets might be more common than we think,” explains Oscar van der Velde, researcher at the Lightning Research Group of the’Polytechnic University of Catalonia.