Snow line

The climatic snow line is the boundary between a snow-covered and snow-free surface. The actual snow line may adjust seasonally, and be either significantly higher in elevation, or lower. The permanent snow line is the level above which snow will lie all year.

This article is about the geographical feature. For the boundary in a protoplanetary disk, see Frost line (astrophysics).
Climatic snow lines
Cho Oyu (8,201 m), Himalayas: 6,000 m
Cotopaxi (5,897 m), Andes: 5,000 m
Weisshorn (4,506 m), Alps: 3,000 m
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