Why Is There A Circle Around The Moon
Camila Farah
Usually the ring is seen along with cirrus clouds the thin wispy clouds seen at high altitude.
A lunar halo is caused by the refraction reflection and dispersion of light through ice particles suspended within thin wispy high altitude cirrus or cirrostratus clouds. Known as a moon ring a winter halo or a 22 degree halo this optical phenomenon occurs when cirrus or cirrostratus clouds form high up in the atmosphere. Wikipedia what causes a ring around the moon. They do it by refracting.
This ring surrounding the moon is caused by the refraction of moonlight which is really reflected sunlight of course through ice crystals suspended in the upper atmosphere between 5 10 km in. Answered april 27 2017 the circle of clouds sometimes seen around the moon are cirrus clouds made up of tiny ice particles. While stargazing have you ever noticed a large circular band of light surrounding the moon. From a folkloric standpoint however many traditions of weather magic indicate that a ring around the moon means bad weather rain or other foul atmospheric conditions are on the way.
The effect is known as a moon ring or winter halo credit. But it s not just the moon that can tell us such a thing. It s called a halo and it s caused by the presence of a specific type and orientation of ice crystals in the upper part of earth s troposphere. 7 5k views view 22 upvoters.
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It forms a 22 degree ring around the moon. Halos are a sign of high thin cirrus clouds drifting 20 000 feet or more above our heads. Tiny ice crystals in earth s atmosphere create the halos. The ring or halo effect is caused by the refraction of sunlight through ice crystals in the upper atmosphere around 3 6 miles above the earth.
Many people observe halos around both the moon and the sun but it s not too common often occurs locally and may only last for an hour or so or even shorter. These clouds are very cold no matter how hot the surrounding climate is and they contain millions of six sided ice crystals. If so you have seen a lunar halo. What is a lunar halo.
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