Geography 1100 Study Guide - Thermosphere, Cold Front, Stratopause
3 Mar 2014
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Air always rises at dry adiabatic lapse rate (dalr) or falls at saturated. Adiabatic lapse rate (salr: salr is always 100% humidity 2, air never rises or falls at the environmental lapse rate. To test for stability compare moving air to the elr. If moving air is colder than elr then air will fall. If moving air is warmer than elr then air will rise. *balloon at peak of dalr will fall because it is colder than the elr. *balloon at peak of salr will fall because it is colder than the elr. *balloon at peak of dalr will rise because air is warmer than elr. *balloon at peak of dalr will sink because air is colder than elr. *balloon at peak of salr will rise because air is warmer than elr. At 1000m air becomes saturated, so moves from dalr to salr. From 0 to 1100m air is stable because dalr / salr is colder than elr.
