Ice Crystal Halos

Sub-Kern, although already documented by Riikonen ( 1 ), was in the back of my mind when the plate crystal swarm got better in the night between 1st and 2nd January 2008. I was forced to photograph in a light-polluted…

Reflected Lowitz arcs were seen for a short period of time in Hyvinkää, Finland, on the very first day of the year. I used the spotlight as a light source. In the beginning of the night fierce pillars formed above…

During the night of 2-3 January 2008 subhorizontal plate halos were observed in Tampere, Finland. The Sub-Kern arc and circumnadiral arc (both first discovered by Marko Riikonen in Rovaniemi in December 2008) are the most noteworthy forms in the display.…

During the night of 1-2 January 2008 bright divergent light halos were present in Tampere, Finland. Most notably, bright, colored superparhelia were observed. The colors are readily visible in a bigger image ( 1 ). Crystals were sampled ( 2…

In the morning of 2 January 2008 there was a very large swarm of diamond dust in Tampere, Finland. Bright parhelia and a 44 degree parhelion were observed. Pillars and subparhelia were also visible. The swarm did not originate from…

Structures deviating from the clean hexagonal form of an ideal ice crystal are believed to have an adverse effect on the formation of halos. Here we present images of a display and the large plate crystals that made it. We…

On 26 December, diamond dust halos were captured by webcams (Hydronet network) at Lysa hora in Krkonose (Giant Mountains). In addition to the more usual phenomena, there were helic arc, Tape infralateral arc and Wegener arc in the sub-area. The…

This display with 24°, 20° and 9° column arcs was observed at 10:47 on 29 June 2008 near Tselinograd by Konstantin Bespalov. The original photos can be found here: ( 1 – 2 ), and a simulation of this display…

These photos and animation ( 1 ) show rather prominent effects in halos from crystal swarm density variation. Photos are from 7/8 December display in Rovaniemi.

On the evening of 11 December diamond dust development near to skiresort in Sievi and in a spotlight beam a halo display was seen. Reflected Lowitz arcs ( 1 ) were rising from the parhelia, other halos were 22° halo,…