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SNOW LINE The lowest elevation area of a perennial snow field on high terrain, such as a mountain range.
SNOWPACK The amount of annual accumulation of snow at higher elevations.
climate snow line"(Also called climatic snow line.) The altitude above which a flat surface (fully exposed to sun, wind, and precipitation) would experience a net accumulation of snow over an extended period of time.
Proxy data are any material that provides an indirect measure of climate and include documentary evidence of crop yields, harvest dates, glacier movements, tree rings, varves, glaciers and snow lines, insect remains, pollen remains, ...
 See also: Snow, Surface, Earth, Temperature, Wind
  
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