Ice creestals
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Ice creestals are solit ice exhibitin atomic ordering on various lenth scales an include hexagonal columns, hexagonal plates, dendritic crystals, an diamond dust. The hugely symmetric shapes are due tae depositional growth, namely, direct deposition o watter vapour onto the ice crystal. Dependin on environmental temperature an humidity, ice crystals can develop frae the initial hexagonal prism intae numerous symmetric shapes. Possible shapes for ice crystals are columns, needles, plates an dendrites. If the crystal migrates intae regions wi different environmental conditions, the growth pattern mey chynge, an the final crystal mey show mixed patterns. Ice crystals tend tae faw wi thair major axis aligned alang the horizontal, an are sicweys visible in polarimetric wather radar signatures wi enhanced (positive) differential reflectivity values. Electrification o ice crystals can induce alignments different frae the horizontal. Electrified ice crystals are an aw well detectable bi polarimetric wather radars.
