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Carbon Dioxide and Carbonate system

Carbon Dioxide and Carbonate system. Carbon cycle - Why is it important?. Regulates temperature of the planet Important for life in the ocean Regulates the pH of water. How much CO 2 can you sink in the ocean?. Chemical Biological Physical. Process that control CO 2

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Carbon Dioxide and Carbonate system

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  1. Carbon Dioxide and Carbonate system Carbon cycle - Why is it important? • Regulates temperature of the planet • Important for life in the ocean • Regulates the pH of water

  2. How much CO2 can you sink in the ocean? Chemical Biological Physical Process that control CO2 absorption in the ocean Carbon Cycle

  3. Carbon Cycle

  4. CO2 Temperature

  5. CO2 changes in the last 300 yr

  6. Oceans Biosphere Rock Weathering CO2 changes in the last 50 yr

  7. Greenhouse effect • Caused by gases such as CO2 and water vapor that allow sunlight to pass through but trap heat energy (infrared) before it is reradiated back in space! • Greenhouses gasses are increasing due to human activities – increasing the average global temperature and causing global worming; • How and what are the effects?

  8. from dissolution of Calcium Carbonate The Carbonate System sources of inorganic carbon from dissolved CO2 gas NOTE: Biology and Physics participate in the equilibrium of the carbonate system

  9. CO2 in the ocean

  10. Carbon Dioxide and Carbonate system Carbonic Acid Bicarbonate Ion Carbonate

  11. Carbon Dioxide and Carbonate system + High pH - Low pH

  12. - + Distribution of Carbon species in water

  13. very rapid reaction in seawater at equilibrium Equilibrium constant hydrogen ion concentration Control of pH

  14. - + hydrogen ion concentration

  15. Concept of Alkalinity

  16. Why is the pH of seawater close to neutral? seawater pH=7.5-8.5 Average is 8.1

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