Snow line

snow line

1. In general, the outer boundary of a snow-covered area.

   
   

   It has at least two specific applications: 1) the actual lower limit of the snow cap on high terrain at any given time; 2) the ever-changing equatorward limit of snow cover, particularly in the Northern Hemisphere winter.

   
   
2. 
   Same as firn line.
   See climatic snow line.

   
   

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