Clear ice refers to a solid precipitation which forms when air temperature is between 0 °C (32 °F) and -3 °C (27 °F) and there are supercooled, relatively large drops of water (from freezing fog). 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 when freezing rain or drizzle hit a surface and is called glaze.
Clear ice, when formed on the ground, is often called black ice, and can be extremely hazardous.
Clear ice is denser and more homogeneous than hard rime; like rime, however, clear ice accumulates on branches and overhead lines, where it is particularly dangerous due to its relative high density.
Famous quotes containing the words clear and/or ice:
“You flicker. I cannot touch you.
I put my hands among the flames. Nothing burns.
And it exhausts me to watch you
Flickering like that, wrinkly and clear red, like the skin of a mouth.”
—Sylvia Plath (1932–1963)
“In vain produced, all rays return;
Evil will bless, and ice will burn.”
—Ralph Waldo Emerson (1803–1882)