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#1
11-02-2010, 02:09 AM
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Rainbow around the sun!
This pic was taken yesterday and shows a "rainbow" which went right around the sun.
The temperature was getting on for 30'C and the day was fine. The phenomina was viewable over a 400 square km area and was not visible outside this area. Proved a showstopper in terms of work - everyone went outside to have a look! Anyone have the correct explaination for what this is and what causes it? 
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#2
11-02-2010, 02:24 AM
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This is a so called "22°-Halo". It comes from hexagonal ice crystals in the high atmosphere in thin clouds. The refraction of the light has an average of about 22° in these crystals, so the ring forms in that angle around the sun.
I am sure, googleing for "22°-Halo" gives more and more detailed info.
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As I am not a native English speaker, I am happy about every error you find and point out. There's always room for improvements. All my Models can be seen here.
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#3
11-02-2010, 02:26 AM
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just found that: Meteorology Q&A
__________________
As I am not a native English speaker, I am happy about every error you find and point out. There's always room for improvements. All my Models can be seen here.
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#5
11-02-2010, 06:08 AM
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Here in the states that is sometimes called a "Sun Dog". We usually only see portions of it though (sides only, maybe the top), as much of the U.S. is north of 22 degrees.
That's is a very neat site though for sure. Kind of weird to see it when it's so warm though. Cool.
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#6
11-02-2010, 09:54 AM
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Quote:
Close, a sun dog can happen with a perihelion (ring around the sun) but a Sun Dog is actually a bright spot to the left and right of the sun. it can sometimes look like there are three suns in the sky. or one big sun and two smaller suns dogging it (following it around) here's a pix File:Fargo Sundogs 2 18 09.jpg - Wikipedia, the free encyclopedia
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#7
11-02-2010, 11:12 AM
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When I was quite young, I was walking with my Father and my Uncle. It was wintertime, in the afternoon. My Uncle looked up and said: "Look, Tommy! The Sun is walking his dog!"
That scene never fails to come to mind whenever I see the Sun walking his dog, or both of them! There are Moon dogs too, but they are pretty rare. There are many amazing and beautiful phenomena that lots of people miss simply because they do not know where to look. Thomas
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#8
11-09-2010, 10:48 PM
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sun dogs do not always pair with the sun, sometimes there is just a single one to the side, often refracted through thin cloud. they actually come in two types, parhelion and anthelion. one is refractive and the other is reflective.
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