Halo phenomena occur all round the world and the commonest is the 22° halo which is the ring round the sun or the moon. The next most commonly see would be parhelia or sundogs which are brightly coloured spots either side of the sun on the 22° halo. In polar regions you can see some spectacular halo displays with many different rings and arcs.
Whether the ring round the sun or the moon is an indicator of weather to come depends entirely on where you are. Cirrostratus cloud, which produces the ice crystals that make the halo, is a forerunner of warm fronts in high latitudes such as most of Europe, northern USA and Canada. Warm fronts often bring rain. In lower latitudes such as the southern USA and Australia, warm fronts are seldom seen. Cirrostratus cloud is an indicator of moisture high in the trpopsphere but it is not necessarily an indicator of rain to come.
2007-01-07 09:06:31
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answer #1
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answered by tentofield 7
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"Have you ever seen a ring around the moon? Folklore has it that this means bad weather is coming--and this particular "old wives tale" happens to be true.
The ring that appears around the moon arises from light passing through six-sided ice crystals high in the atmosphere. These ice crystals refract, or bend, light in the same manner that a camera lens bends light. The ring has a diameter of 22 , and sometimes, if you are lucky, it is also possible to detect a second ring, 44° diameter.
How can rings around the moon be used as a weather predictor? The ice crystals that cover the halo signify high altitude, thin cirrus clouds that normally precede a storm front by one or two days. Maybe the ancients knew more than we think they did."
[copied from the first link]
I have attached three links you might enjoy.
2007-01-07 05:56:40
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answer #2
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answered by QueryJ 4
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ice crystals high in the atmosphere form the appearance of a ring enclosing a dark area.
the sun shows a similar circle when the ice is present. but extreme care should be taken when looking at Mr. Fusion.
In some circumsatnces, 4 (i think) individual bright points also appear with the rings, these are called SUN DOGS.
2007-01-07 05:53:23
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answer #3
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answered by disco legend zeke 4
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END OF THE WORLD!
Just kidding, its an effect similar to a rainbow and if you look carefully you can often see a thin rainbow on the edge of the glowing area - its just tiny ice crystals high in the atmosphere refracting the moon's light.
They're called moon dogs. The lunar rainbows are called moon bows.
http://home.hiwaay.net/~krcool/Astro/moon/moonring/
http://en.wikipedia.org/wiki/Moon_dog
2007-01-07 05:51:31
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answer #4
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answered by Anonymous
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Much better than rings around neptune or worse, Uranus...
Just kidding.
It is from tiny water or ice particles in the atmosphere.
Yes you can go to a site.
I do not know the exact link.
Type in
Moon rings, or something...
DJ
2007-01-07 05:51:44
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answer #5
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answered by gemseeker 3
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No. It's just moonlight refracting through ice crystals high in the atmosphere.
2007-01-07 05:54:26
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answer #6
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answered by ? 7
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