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Unformatted text preview: subsidence Ridge: poleward bulge of warm air. Trough: equatorward bulge of cold air Jet stream Core of upper levels westerliesmaximum wind speeds. Zonal Flow Aloft Zonal flow: straight W E winds Normal conditions Meridional flow: meandering W E winds Pronounced temperature departures from normal. Map of surface temperatures Warm under ridge Cold under trough Jet stream controls: 1. Position of PF at the surface 2. Storm tracks taken by surface Ls. 3. Where surface L forms 4. Temp patterns at surface Surface Lforms beneath trough Surface Hforms beneath ridge Temperature gradient in winter>in the summer stronger upper level winds in winter...
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This note was uploaded on 01/17/2011 for the course GEOG 1111 taught by Professor Hopkins during the Fall '08 term at University of Georgia Athens.
- Fall '08