Ice prisms

Alternative definitions (4), class: vernacular (0)
Term: Ice prisms
Definition: A fall of unbranched ice crystals, in the form of needles, columns, or plates, often so tiny that they seem to be suspended in the air; these are visible mainly when they glitter in the sunshine (diamond dust); they may then produce a luminous pillar or other halo phenomena; this hydrometeor, which is frequent in polar regions, occurs at very low temperatures and in stable air masses.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary