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Clear ice refers to a solidprecipitation which forms whenair temperature is between 0 °C (32 °F) and −3 °C (27 °F) and there are supercooled, relatively largedrops ofwater (from freezingfog). A rapid accretion and a slow dissipation of latent heat of fusion favor the formation of a transparent ice coating, without air or other impurities. A similar phenomenon occurs whenfreezing rain ordrizzle hits a surface and is calledglaze. Clear ice, when formed on the ground, is often calledblack ice, and can be extremely hazardous.
Clear ice is denser and more homogeneous thanhard rime; like rime, however, clear ice accumulates on branches and overhead lines, where it is particularly dangerous due to its relatively highdensity.
