A concave upper Parry arc merges with the upper tangent arc to form a luminous disc that rests on the top of a 22° halo. Photo taken at Veenhuizen, The Netherlands, on October 22, 1995 at 12:25 pm. The shape of the arcs is dependent on the elevation of the solar disc.
[© Gerrit BREMAN - photo used with permission] |
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