ENVIRSC 1C03 Lecture Notes - Lecture 9: Permafrost, Cryosphere

• School: McMaster University
• Department: Environmental Science
• Course: ENVIRSC 1C03
• Professor: Luc Bernier

Document Summary

Warm air rises and condenses, then rain falls. Smaller droplets are catched in the huge fall of the large droplets. Accretion- falling ice crystals may freeze water droplets. Aggregation- ice crystals colliding and staying together- snowflake. Permafrost- where the ground is frozen for most of the year. At the poles, snow cover is shallow for long period. At warmer, snow is deep for short period. As snow ages- it turns grey, becomes more compact and dense, and loses its leafy shape, void space decreases.