GEG 4129 Lecture Notes - Lecture 3: Polar Regions Of Earth, Positive Feedback, Atmospheric Pressure

• School: University of Ottawa
• Department: Geography
• Course: GEG 4129
• Professor: conrad

Document Summary

Antarctic oscillation-aao: polar region vs sub polar oscillation back and fourth, not very important- not a lot of research done on it. Components ice sheets ice caps: glaciers, permafrost, sea ice, snow cover. Properties and considerations: albedo- reflects a significant proportion of the energy (85%, dynamics- how fast they change and where they are storing the water, storage of water response time. The areas that are frozen vary significantly over the course of the seasons. An abrupt change in climate and goes from a step function ice sheets can be land or sea bases and both are very different. Ice sheets and glaciers- glaciers have accumulation and ablation zones, in the summer time the snow is melted below the equilibrium line, glacier flow. The same thing goes for ice cap, they are just larger glaciers. When the ice sheat is rounded into an ocean you can get ice shelves.