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  2. Five Reasons Why Freezing Rain Really Is The Worst - AOL

    www.aol.com/five-reasons-why-freezing-rain...

    Freezing rain can also occur in valleys where cold air can get dammed or stuck. Because cold air sinks below warm air, it sometimes can get stuck in pools or forced into lower elevations by wind ...

  3. Ice spike - Wikipedia

    en.wikipedia.org/wiki/Ice_spike

    Reaching very cold air, the edge of the extruded water freezes while remaining liquid in the center. More freezing below pushes more water up, the edge freezes, and so on. If the rate of extrusion of water is the same as the rate of freezing at the lip of the hole, then this process is continually repeated and successive layers form an upward ...

  4. Cold-air pool - Wikipedia

    en.wikipedia.org/wiki/Cold-air_pool

    The cold air is produced by radiative cooling at night along the slopes and sinks down, as it is denser than the surrounding air, settling at the bottom of the depression. The cold dome is trapped by the surrounding higher terrain until a change of air mass or daytime heating breaks the temperature inversion. Since the cold-air pool can persist ...

  5. Frost heaving - Wikipedia

    en.wikipedia.org/wiki/Frost_heaving

    Photograph taken 21 March 2010 in Norwich, Vermont. Frost heaving (or a frost heave) is an upwards swelling of soil during freezing conditions caused by an increasing presence of ice as it grows towards the surface, upwards from the depth in the soil where freezing temperatures have penetrated into the soil (the freezing front or freezing boundary).

  6. Defrosting (refrigeration) - Wikipedia

    en.wikipedia.org/wiki/Defrosting_(refrigeration)

    Defrosting a freezer with an improvised water collection method. In refrigerators, defrosting (or thawing) is the removal of frost and ice.. A defrosting procedure is generally performed periodically on refrigerators and freezers to maintain their operating efficiency.

  7. Frost - Wikipedia

    en.wikipedia.org/wiki/Frost

    Frost may occur when warm, moist air comes into contact with a cold surface, cooling it below its dew point, such as warm breath on a freezing window. In the atmosphere, it more often occurs when both the air and the surface are below freezing, when the air experiences a drop in temperature bringing it below its dew point, for example, when the ...

  8. Wegener–Bergeron–Findeisen process - Wikipedia

    en.wikipedia.org/wiki/Wegener–Bergeron...

    The Wegener–Bergeron–Findeisen process (after Alfred Wegener, Tor Bergeron, and Walter Findeisen []), (or "cold-rain process") is a process of ice crystal growth that occurs in mixed phase clouds (containing a mixture of supercooled water and ice) in regions where the ambient vapor pressure falls between the saturation vapor pressure over water and the lower saturation vapor pressure over ice.

  9. Freezing air temperature - Wikipedia

    en.wikipedia.org/wiki/Freezing_air_temperature

    Freezing [1] or frost occurs when the air temperature falls below the freezing point of water (0 °C, 32 °F, 273 K). This is usually measured at the height of 1.2 metres above the ground surface. This is usually measured at the height of 1.2 metres above the ground surface.