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   ice age  
Subject: The Earth
    A glacial epoch or time of extensive glacial activity. Also, as the ice age, which refers to the latest glacial epoch, the Pleistocene Epoch.
 
 
  
   ice and snow albedo  
Subject: The Earth
    The reflectivity of ice and snow-covered surfaces. The albedo of freshly fallen snow may be as much as 90%, while older snow may have values of 75% or less. The larger the areal extent of snow and ice cover, the higher the albedo value. The surface albedo will also increase as a function of the depth of snow cover up to 13 cm and be unaffected by increased snow cover after reaching that depth.
 
 
  
   Ice cap  
Subject: Geology
    A dome-shaped body of ice and snow that covers a mountain highland, or lower-lying land at high latitude, and that displays generally radial outward flow. Reference : Skinner B.J., S.C.Porter & J.Park (2004), DYNAMIC EARTH, 5th edition, Jon Wiley & Sons.
 
 
  
   ice cover  
Subject: The Earth
    During the present time, the extent, especially the thickness, of glacier ice on a land surface. Also the same as ice concentration, which is the ratio of an area of sea ice to the total area of sea surface within some large geographic area.
 
 
  
   ice crystal process  
Subject: The Earth
    A process that produces precipitation. The process involves tiny ice crystals in a supercooled cloud growing larger at the expense of the surrounding liquid droplets. Also called the Bergeron-Findeisen process.
 
 
  
   ice flow  
Subject: The Earth
    See glacier flow.
 
 
  
   ice fog  
Subject: The Earth
    A type of fog composed of tiny suspended ice particles that forms at very low temperatures.
 
 
  
   ice front  
Subject: The Earth
    The floating vertical cliff that forms the seaward face or edge of a glacier or an ice shelf that enters water. It can vary from 2 to 50 m in height.
 
 
  
   ice nuclei  
Subject: The Earth
    Particles that act as nuclei for the formation of ice crystals in the atmosphere.
 
 
  
   ice pellets  
Subject: The Earth
    See sleet.
 
 
  
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