| Information | |
|---|---|
| has gloss | eng: A fallstreak hole (also: hole punch cloud and punch hole cloud) is a large circular gap that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of ice nucleation particles. When a portion of the water does start to freeze it will set off a domino effect, due to the Bergeron process, causing the water vapor around it to freeze and fall to the earth as well. This leaves a large, often circular, hole in the cloud. |
| lexicalization | eng: Fallstreak Holes |
| lexicalization | eng: fallstreak hole |
| instance of | (noun) a visible mass of water or ice particles suspended at a considerable altitude cloud |
| Meaning | |
|---|---|
| German | |
| has gloss | deu: Eine Hole Punch Cloud (von engl. hole punch = Locher, auch Punch Hole Cloud und Fallstreak Hole) ist ein sehr selten zu beobachtendes Wetterphänomen und bezeichnet eine kompakte Wolke mit bizarren Spitzen, die sich durch einen deutlichen kreisförmigen bis ovalen Freiraum von den sie umgebenden Wolken – zumeist Cirruswolken – absetzt. |
| lexicalization | deu: Hole Punch Cloud |
| Media | |
|---|---|
| media:img | HolePunchCloud.jpg |
| media:img | Omarama Fallstreak.jpg |
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