EAS100 Lecture Notes - Lecture 20: Global Temperature Record, Sea Level Rise, Antarctica

• School: University of Alberta
• Department: Earth and Atmospheric Sciences
• Course: EAS100
• Professor: Jeffrey Kavanaugh

Document Summary

Beautiful - good excuse to be in the mountains :) They have a huge impact on the global enviroment. Ice sheets reflect sunlight - energy balance. Large icesheets, very tall and change airflows. They provide a wealth of information on past climate. Temperature record determined from the ratio of heavy to light oxygen isotopes. evaporate in cooler climate. period with warm. Every 100k years or so, there is an inter-glacial civalization. Their continued response to climate change will have impact on human. Each represents ~7m sea level rise weight weight. They are dynamic often roll on a cycle of several years (build up then "flush") Glacier: an icemass that becomes large enough to flow under its own. Icesheet: an icemass that becomes large enough to flow under its own. Generally, two areas an accumulation area and a ablation area. divided by an equilibrium line. Very dependant on subglacier water pressure (varies from day to night, season to season)