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SUNDOG |
Sundogs are atmospheric occurrences in which a bright spot appears along a line on each side of the sun. They may appear to have "tails". Also known as mock suns or parhelia, they can be hazy white or rainbow colored. Their appearance is caused by ice crystals in the atmosphere that refract light. They are not exceptionally rare, especially in polar regions, if you watch for them. But there are reports of odd sundog phenomenon such as those at strange angles to the sun, multiple mock suns, very long tails or brilliant colors or occurrences on only one side of the sun. "Moon dogs" may also occur but are more rare. Historically, visions of sundogs held great significance. Sightings were considered signs from the heavens.
Sharon Hill (Geologist) |
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