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Global Scale Winds.

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Presentation on theme: "Global Scale Winds."— Presentation transcript:

1 Global Scale Winds

2 See also animation at http://www. suu

3

4 Columbus and Global Scale Winds
Prevailing Westerlies

5 Global Scale Winds at the Surface in January

6 Surface Ocean Currents

7 Cross Section of Ocean Temperature and Circulation
Surface Veneer and Dome of Warm Water North Atlantic Deep Water Antarctic Bottom Water

8 Upwelling and the Ekman Spiral
Wind driven surface ocean currents move at 45° to the left of the wind in the South Hemisphere. With depth the current continues turning left and decreasing in speed. The net flow of water is 90° to the left of the wind. When winds parallel the coast, as against South America, colder water from the depths is forced to rise. This is called upwelling.

9 The Jet Stream often has two separate branches

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