Nocilucent Clouds “AKA Night Glowing Clouds“

Noctilucent clouds, or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. They consist of ice crystals and are only visible during astronomical twilight. Noctilucent roughly means "night shining" in Latin.

Noctilucent clouds are not fully understood and are a recently discovered meteorological phenomenon. No confirmed record of their observation exists before 1885, although they may have been observed a few decades earlier by Thomas Romney Robinson in Armagh.

Noctilucent clouds can form only under very restricted conditions during local summer; their occurrence can be used as a sensitive guide to changes in the upper atmosphere. They are a relatively recent classification. The occurrence of noctilucent clouds appears to be increasing in frequency, brightness and extent.

Camera Used: Canon Canon EOS 5D Mark II
Exposure Time: 10/1
Aperture: f/4.0
ISO: 400
Date Taken: 2020:05:26 01:46:48
Ängelholm, Sweden

Copyright Information: © Johny Krahbichler