LS.0078-00Ice crystals in the upper atmosphere. A pair of parhelia, a sun pillar, the 22° halo, and a hint of the upper tangent arc viewed over the Hayes Range from the Delta Mountains. Eastern Alaska Range.
LS.0079-00Balcony Camp on the West Rib of Denali underneath a display of ice crystal optics. A 22° halo, a parhelia or sun dog, the parhelic circle, and perhaps a hint of the Lowitz Arc (note that the Parhelia is not on the 22° halo, and that faint arcs emmanate up and down from the parhelia.) Denali National Park, Alaska.
LS.0062-00An exceptional show of ice halos. A pair of parhelia (sun dogs), the 22 degree halo, the parhelic circle, several subhelic arcs (inside the prominent 22 degree halo), a prominent lower sun pillar, a weak upper tangent arc, a pair of subparhelia, and perhaps even a hint of the subparhelic circle. Sunburst Mtn, Kenai Mountains, Alaska.
ANT1617-04Sun halo over an emperor penguin colony at Snow Hill Island, with low cloud and old icebergs. Antarctica