#cavum — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #cavum, aggregated by home.social.
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Fall streak, punch hole, #cavum #clouds #sky #coast #observations #photography
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Fall streak, punch hole, #cavum #clouds #sky #coast #observations #photography
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Fall streak, punch hole, #cavum #clouds #sky #coast #observations #photography
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Fall streak, punch hole, #cavum #clouds #sky #coast #observations #photography
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Fall streak, punch hole, #cavum #clouds #sky #coast #observations #photography
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@wind-berlin.bsky.social Vorhin war diese #Punch-Hole-Cloud am Himmel zu sehen. Die Wassertröpfchen in diesem #Altocumulus sind unterkühlt. Fliegt nun z.B. ein Flugzeug durch, kristallisieren die Wassertröpfchen und fallen als Eiskristalle aus, so dass ein "Loch" entsteht. #cavum #wolken
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#Cavum clouds, also known as hole-punch clouds or fallstreak clouds, are large gaps that can appear in cirrocumulus, altocumulus, or stratocumulus clouds. They are caused by cold air temperatures and atmospheric instability when an aircraft moves through a thin cloud.
Because of their rarity and unusual appearance, fallstreak holes have been mistaken for or attributed to unidentified flying objects.