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A sun dog (or sundog) or mock sun, also called a parhelion [1] (plural parhelia) in meteorology, is an atmospheric optical phenomenon that consists of a bright spot to one or both sides of the Sun. Two sun dogs often flank the Sun within a 22° halo . The sun dog is a member of the family of halos caused by the refraction of sunlight by ice ...
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Dec 23, 2022 · Sundogs are formed when light passes through hexagonal plate crystals of ice, suspended in cirrus or cirrostratus clouds located at altitudes of around 20,000 feet (6,000 meters) and higher, up to ...
Dec 4, 2023 · A sundog is seen about 22° to the left or right of the Sun. Sundogs often form in pairs on either side of the Sun. Often, they appear white, but sometimes they are quite colorful, looking like patches of rainbow. The colors usually go from red on the side nearest to the Sun, shifting from orange to blue on the outside of the sundog.
Oct 19, 2023 · Sun dogs are formed by hexagonal ice crystals suspended in clouds that drift in the air at lower levels. These ice crystals act as a prism, bending the light rays that pass through them. As the crystals sink vertically through the air, they refract the sun rays horizontally, leading to the formation of sun dogs.
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sun dog, atmospheric optical phenomenon appearing in the sky as luminous spots 22° on each side of the Sun and at the same elevation as the Sun. Usually, the edges closest to the Sun will appear reddish. Other colours are occasionally visible, but more often the outer portions of each spot appear whitish. Sun dogs occur when the Sun or Moon ...
- The Editors of Encyclopaedia Britannica
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What is a sundog Halo?
Jul 25, 2006 · A Sun halo, a circle of light that creates a circle 22° wide around the Sun, is a related phenomenon. As with sundogs, hexagonal ice crystals suspended in cirrostratus clouds refract sunlight to create the halo, sometimes also called an icebow, nimbus, or gloriole. Unlike sundogs, which generally only be seen when the Sun is near the horizon ...
Sun dogs can be seen anywhere, any time of year or day. Best bet for seeing one is in the northern hemisphere with the Sun low in the sky.
