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The Restless Oceans

The Restless Oceans

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The Restless Oceans

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  1. The Restless Oceans 23.5

  2. Explain how the properties of ocean water change with depth.

  3. Atmosphere & Ocean Circulation • Atmospheric Circulation • Depends on density • Ocean Surface Circulation • Depends on the wind • Deep Ocean Circulation • Depends on density

  4. Why is Ocean Circulation Important? • Transport ~ 20% of latitudinal heat • Equator to poles • Transport nutrients and organisms • Influences weather and climate • Influences commerce

  5. Ocean Circulation

  6. Distinguish between surface currents, deep currents, and upwelling.

  7. Wind driven surface currents Wind-drive ocean surface currents • How fast? A few miles/hr (Gulf Stream off of Miami = 4.5 mph) • How much?Total water in ocean surface circulation = about 100 Amazon Rivers (20 million m3/s).

  8. Sea Surface Temperature http://www.ldeo.columbia.edu/dees/ees/climate/slides/sst_march.gif

  9. Ocean Salinity • http://www.ldeo.columbia.edu/dees/ees/climate/slides/sal_march.gif • http://ingrid.ldgo.columbia.edu/

  10. Equatorial to polar heat transport and water flow

  11. Ocean – Atmosphere Circulation