snow line

• Ligne altitudinale ou latitudinale au-dessus de laquelle la neige persiste toute l'année ou s'accumule pendant une saison donnée ; utilisée notamment en géographie et en alpinisme.

The altitude or latitude above which snow persists year-round or accumulates during a given season, commonly used in geography and mountaineering contexts.

1. Altitude boundaryB2formal

   The altitude above which snow remains on the ground throughout the year.

   limite des neiges persistantes

   • The snow line on this mountain is at about 3,000 meters.
   • Climate change is causing the snow line to retreat higher.
   • Hikers need to be prepared for cold conditions above the snow line.

2. Latitude boundaryB2formal

   The latitude beyond which snow and ice are present year-round.

   Ligne de neige (limite latitudinale)

   • The snow line in the Arctic region is much lower than in the tropics.
   • Scientists study the snow line to understand global warming effects.
   • Vegetation becomes sparse near the snow line.