Sprite and Halo
It's rare to have a sprite and a well-shaped halo (red disk next to the sprite) in such a distance (they were possibly triggered by separate electrical discharges), on Feb. 12-13, 2024, over thunderstorms at the Aegean Sea. Halos occur due to the same mechanism responsible for sprites, appear higher than them, at 70–85 km, last for some ms, and look like faint red disks with a typical diameter of less than 100 km. Also, observe the lower right tendrils of the sprite and their deviation towards the right, following the strong temporary electric field above the thundercloud.
TLEs (like red sprites) are upper atmospheric electrical discharges and they appear, under specific circumstances, above thunderstorms (e.g. red sprites appear at altitudes of 40-90 km).
I've used a #Sigma 85 mm lens at f/1.4, for 1/25'' with 40 k iso.
Check our recent #paper about TLEs from Greek-based observers, here: doi.org/10.3390/environsciproc2023026009.
What is a red sprite? Info here: antisimvatikos.blogspot.com/2017/04/red-sprite.html
Photography and Licensing: doudoulakis.blogspot.com/
My books concerning natural phenomena / Τα βιβλία μου σχετικά με τα φυσικά φαινόμενα: www.facebook.com/TaFisikaFainomena/
Sprite and Halo
It's rare to have a sprite and a well-shaped halo (red disk next to the sprite) in such a distance (they were possibly triggered by separate electrical discharges), on Feb. 12-13, 2024, over thunderstorms at the Aegean Sea. Halos occur due to the same mechanism responsible for sprites, appear higher than them, at 70–85 km, last for some ms, and look like faint red disks with a typical diameter of less than 100 km. Also, observe the lower right tendrils of the sprite and their deviation towards the right, following the strong temporary electric field above the thundercloud.
TLEs (like red sprites) are upper atmospheric electrical discharges and they appear, under specific circumstances, above thunderstorms (e.g. red sprites appear at altitudes of 40-90 km).
I've used a #Sigma 85 mm lens at f/1.4, for 1/25'' with 40 k iso.
Check our recent #paper about TLEs from Greek-based observers, here: doi.org/10.3390/environsciproc2023026009.
What is a red sprite? Info here: antisimvatikos.blogspot.com/2017/04/red-sprite.html
Photography and Licensing: doudoulakis.blogspot.com/
My books concerning natural phenomena / Τα βιβλία μου σχετικά με τα φυσικά φαινόμενα: www.facebook.com/TaFisikaFainomena/