GEOG 131 Lecture Notes - Lecture 10: Great Plains, Tropopause, Introgression
Document Summary
Force exerted on an area from all directions a. ii. If you compress gas into smaller volume more collisions over same area. Gas heated, molecules more energetic = more collisions = higher pressure c. ii. Average slp = 1013. 25 mb: pressure decreases as you go up, pressure varying laterally. Isobar map a: closers isobars are to each other = greater the wind b. i. Not a lot of wind in tn 1024 across tn down to florida: measuring strength and direction of wind, winds named by where they come from, most winds come from the west b. i. Wind belts called the westerlies: southerly wind in tn c. i. Warm air rises and expands until it hits this b. ii. Slides over and sinks to colder air which causes high pressure near the surface b. iii. Set over the earth, the cold air is getting trapped at the poles and the long wave radiation is warming up the molecules. 2: pressure and horizontal, pressure gradient force a. i.
