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Ocean circulation

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Ocean circulation

  1. 1. Components of the Climate System • Atmosphere • Ocean • Biosphere • Geosphere Image from NASA
  2. 2. Atmosphere & Ocean Circulation • Atmospheric Circulation – Depends on density • Ocean Surface Circulation – Depends on the wind • Deep Ocean Circulation – Depends on density
  3. 3. Why is Ocean Circulation Important? • Transport ~ 20% of latitudinal heat – Equator to poles • Transport nutrients and organisms • Influences weather and climate • Influences commerce
  4. 4. Temperature Structure of Ocean thermocline
  5. 5. Ocean Circulation
  6. 6. 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).
  7. 7. Atmosphere & Ocean Circulation • Atmospheric Circulation – Depends on density • Ocean Surface Circulation – Depends on the wind • Deep Ocean Circulation – Depends on density
  8. 8. Sea Surface Temperature http://www.ldeo.columbia.edu/dees/ees/climate/slides/sst_march.gif
  9. 9. Ocean Salinity http://www.ldeo.columbia.edu/dees/ees/climate/slides/sal_march.gif •http://ingrid.ldgo.columbia.edu/
  10. 10. Temperature-Salinity (density) Diagram
  11. 11. Thermohaline Circulation North Atlantic Deep Water (NADW 15 million m3 of near surface water descend into the deep ocean each second.
  12. 12. Thermohaline Circulation - The Ocean Conveyor
  13. 13. Equatorial to polar heat transport and water flow
  14. 14. Ocean – Atmosphere Circulation
  15. 15. UNEQUAL HEATING OF EARTH BUT – Outgoing solar radiation is not as uneven
  16. 16. End of Report in Ocean Circulation… Click here to go to: Agricultural, Industrial and Domestic use

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