Combinaison de cristaux de neige de type colonne et plaquettes (CP1a selon la classification de Nakaya (1954), de Magono and Lee (1966) et de Kikuchi et al. (2013))
Snow crystals, combination of column and plates crystals (CP1a-type in Nakaya classification (1954), in Magono and Lee classification (1966) and in Kikuchi et al. global classification of snow crystals, ice crystals, and other solid precipitation (2013)).