Banded airglow due to atmospheric gravity waves

Numéro d’image : 12655437
Banded airglow due to atmospheric gravity waves
Banded airglow in the night sky due to atmospheric gravity waves. The Milky Way is also visible. Airglow is a phenomenon where a planetary atmosphere emits a faint glow when atoms are excited by sunlight. The banding of this glow is caused here by gravity waves in the atmosphere, where weather systems generate large waves as buoyant air masses rise and sink due to the effects of gravity, often as a flow of air meets mountains. These atmospheric gravity waves are at an altitude of 90 kilometres or more, in the thermosphere and upper mesosphere layers of the atmosphere. Photographed on 17 November 2015, from an altitude of 1200 metres on Pico mountain on the Azores in the Atlantic Ocean. The island of Faial is at lower centre.
Licence : Droits gérés
Crédit: Science Photo Library / MIGUEL CLARO
Taille de l’image : 8598 px × 4065 px
Model Release : Non requis
Property Release : Non requis
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