Ice Crystal Halos

Highest sun Parry of Germany

Highest sun Parry of Germany

On 26 July 2009, at a sun elevation of 60.1°, I observed a second arc above the 22° halo and complete circumscribed halo ( 1 ). Besides it, there was also a CHA, and later a parhelic circle appeared. Further haloes were not present. At this sun elevation the Parry arc and the 23° plate arc are in similarly position, a precise distinction is very difficult, particularly that other observers reported further Parry arcs and other pyramidal haloes (9° and 18° halo), too. As the complete form of the arc can more or less be seen in the usm-ed image, I tend to Parry arc. This would actually be the Parry arc at highest sun elevation in the German 24-year statistic. ( 234 )

Text: Claudia Hinz


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