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 can’t, in sound morals, condemn a man for taking care of his own integrity. It is his clear duty. And least of all can you condemn an artist pursuing, however humbly and imperfectly, a creative aim. In that interior world where his thought and his emotions go seeking for the experience of imagined adventures, there are no policemen, no law, no pressure of circumstance or dread of opinion to keep him within bounds. Who then is going to say Nay to his temptations if not his conscience?”
—Joseph Conrad (1857–1924)
“‘Line in nature is not found;
Unit and universe are round;
In vain produced, all rays return;
Evil will bless, and ice will burn.’
As Uriel spoke with piercing eye,
A shudder ran around the sky;”
—Ralph Waldo Emerson (1803–1882)