Lectures_9 - Ocean Currents and Atmospheric Impacts Average...

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Ocean Currents and Atmospheric Impacts
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Fig. 7-24, p.190 Average position and extent of the major surface ocean currents. Cold currents are shown in blue; warm currents are shown in red. Names of the ocean currents are given in Table 7.2.
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Table 7-2, p.190
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Surface Currents Recall that these are surface currents Driven by winds Affected by Coriolis force And internal friction Balance of forces is often friction and Coriolis the Gulf Stream and Kuroshio carry tropical energy up to high N latitudes The Gulf Stream forms part of the thermohaline circulation Cold, salty water is heavy and descends around Greenland and Labrador to the ocean abyss and returns along the E coast of N and S. America to emerge at high S latitudes near the West wind drift
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Fig. 7-25, p.191 These summer temperatures are in °F To convert (X(°F) -32 )x5/9 The water is pretty chilly!
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Fig. 7-26a, p.191 Although the winds are generally westerly at this time of year the coastal range deflects the air flow as shown. This produces a force of the water to the S. But the Coriolis Force turns it to the right and away from the land. Cold water from below rises to replace it. More details in next slide.
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Fig. 7-26b, p.191
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M E x We τ EKMAN Driven Flow
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Lectures_9 - Ocean Currents and Atmospheric Impacts Average...

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