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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 crystals in the atmosphere. Sun dogs typically appear as a pair of subtly colored patches of light, around 22° to the left and right of the Sun, and at the same altitude above the horizon as the Sun ...
While mostly known and often quoted for being the oldest color depiction of the city of Stockholm, Vädersolstavlan (Swedish; "The Sundog Painting", literally "The Weather Sun Painting") is arguably also one of the oldest known depictions of a halo display, including a pair of sun dogs. For two hours in the morning of 20 April 1535, the skies ...
In its full form, the arc has the appearance of a large, brightly spectrum-coloured band (red being the topmost colour) running parallel to the horizon, located far below the Sun or Moon. The distance between the arc and the Sun or Moon is twice as far as the common 22-degree halo. Often, when the halo-forming cloud is small or patchy, only ...
A 22° halo around the Sun, observed over Bretton Woods, New Hampshire, USA on February 13, 2021. A halo (ἅλως; also known as a nimbus, icebow or gloriole) is an optical phenomenon produced by the interaction of light from the Sun or Moon with ice crystals in the atmosphere, resulting in colored or white arcs, rings or spots in the sky. [23]
A 22° halo featuring two sun dogs on both sides, as well as an upper and a lower tangent arcs at the top and the bottom. The lower tangent arc is rarely observable, appearing under and tangent to a 22° halo centred on the Sun. Just like upper tangent arcs, the shape of a lower arc is dependent on the altitude of the Sun.
A halo display photo documented by Cindy McFee, NOAA, December 1980 at the South Pole Station. Several distinct halo phenomena are featured in the photo: Two sun dogs (bright spots), a parhelic circle (horizontal line), a 22° halo (circle), and an upper tangent arc and a Parry arc (top). Complex Moon halo.
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Sun dog to the right of the Sun. Circumzenithal arc, Supralateral arc, Parry arc, and Upper tangent arc, in Salem, Massachusetts, Oct 27, 2012. A supralateral arc is a comparatively rare member of the halo family which in its complete form appears as a large, faintly rainbow-colored band in a wide arc above the sun and appearing to encircle it ...