the restless oceans
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The Restless Oceans. 23.5. Explain how the properties of ocean water change with depth. Atmosphere & Ocean Circulation. Atmospheric Circulation Depends on density Ocean Surface Circulation Depends on the wind Deep Ocean Circulation Depends on density. Why is Ocean Circulation Important?. - PowerPoint PPT PresentationTRANSCRIPT
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The Restless OceansThe Restless Oceans
23.523.5
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Explain how the properties of ocean water change with depth.
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Atmosphere & Ocean Atmosphere & Ocean CirculationCirculation
► Atmospheric Atmospheric CirculationCirculation Depends on densityDepends on density
►Ocean Surface Ocean Surface CirculationCirculation Depends on the windDepends on the wind
►Deep Ocean Deep Ocean CirculationCirculation Depends on densityDepends on density
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Why is Ocean Circulation Why is Ocean Circulation Important?Important?
► Transport ~ 20% of Transport ~ 20% of latitudinal heatlatitudinal heat Equator to polesEquator to poles
► Transport nutrients Transport nutrients and organismsand organisms
► Influences weather Influences weather and climateand climate
► Influences commerceInfluences commerce
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Ocean Circulation Ocean Circulation
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Distinguish between surface currents, deep currents, and upwelling.
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Wind-drive ocean surface Wind-drive ocean surface currentscurrents
Wind driven 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).
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Sea Surface TemperatureSea Surface Temperature
http://www.ldeo.columbia.edu/dees/ees/climate/slides/sst_march.gif
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Ocean SalinityOcean Salinity
http://www.ldeo.columbia.edu/dees/ees/climate/slides/sal_march.gif
•http://ingrid.ldgo.columbia.edu/
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Equatorial to polar heat transport and Equatorial to polar heat transport and water flowwater flow
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Ocean – Atmosphere Ocean – Atmosphere CirculationCirculation