The Global Carbon Cycle
The Carbon Cycle <ul><li>Describes movement of carbon among  reservoirs  in the Earth system </li></ul><ul><li>What natura...
Carbon <ul><li>Carbon (C),  the fourth most abundant element in the Universe, after hydrogen (H), helium (He), and oxygen ...
The Carbon Cycle <ul><li>Reservoirs   (storage places) for carbon in the </li></ul><ul><li>Earth System </li></ul><ul><li>...
http://www.esrl.noaa.gov/gmd/ccgg/carbontracker/images/CT_overviewCreservoirs_v2.png Billions of metric tons (10 9 ): giga...
Global Carbon Cycle <ul><li>The global carbon cycle can be divided into two categories:  </li></ul><ul><ul><li>biological/...
Biological/Physical (Short-term) Carbon Cycle http://www.windows.ucar.edu/earth/climate/images/carboncycle.jpg
The Geological (Long-term)  Carbon Cycle Source: NASA
Processes <ul><li>Photosynthesis:  removes CO 2  from atmosphere </li></ul><ul><li>energy   (sunlight) + 6CO 2  + H 2 O = ...
http://www.windows.ucar.edu/earth/climate/images/carboncycle.jpg
Human Impacts on the Carbon Cycle http://oco.jpl.nasa.gov/images/carbon_cycle-br.jpg
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Global Carbon Cycle

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Global Carbon Cycle

  1. 1. The Global Carbon Cycle
  2. 2. The Carbon Cycle <ul><li>Describes movement of carbon among reservoirs in the Earth system </li></ul><ul><li>What natural processes add C02 to the atmosphere? </li></ul><ul><li>What natural processes remove C02 from the atmosphere? </li></ul><ul><li>How do humans impact the carbon cycle? </li></ul>
  3. 3. Carbon <ul><li>Carbon (C), the fourth most abundant element in the Universe, after hydrogen (H), helium (He), and oxygen (O) </li></ul><ul><li>The building block of life. </li></ul><ul><li>Carbon cycles through the land, ocean, atmosphere, and the Earth’s interior in a major biogeochemical cycle (the circulation of chemical components through the biosphere from or to the geosphere, atmosphere, and hydrosphere) </li></ul>http://earthobservatory.nasa.gov/Features/CarbonCycle/
  4. 4. The Carbon Cycle <ul><li>Reservoirs (storage places) for carbon in the </li></ul><ul><li>Earth System </li></ul><ul><li>Atmosphere: Mostly CO2, smaller amounts of CH4 </li></ul><ul><li>Biosphere: carbon is the fundamental “building block” of organic tissue </li></ul><ul><li>Hydrosphere: CO2 dissolves in ocean water </li></ul><ul><li>Geosphere </li></ul><ul><ul><li>Carbonate rocks (limestone – CaC03) </li></ul></ul><ul><ul><li>Fossil fuels </li></ul></ul>
  5. 5. http://www.esrl.noaa.gov/gmd/ccgg/carbontracker/images/CT_overviewCreservoirs_v2.png Billions of metric tons (10 9 ): gigaton Petagram (10 15 grams )
  6. 6. Global Carbon Cycle <ul><li>The global carbon cycle can be divided into two categories: </li></ul><ul><ul><li>biological/physical , ( Fast Track ) which operates at shorter time scales (days to thousands of years). </li></ul></ul><ul><ul><li>geological , ( Slow Track )which operates over large time scales (millions of years), and the </li></ul></ul>http://earthobservatory.nasa.gov/Features/CarbonCycle/
  7. 7. Biological/Physical (Short-term) Carbon Cycle http://www.windows.ucar.edu/earth/climate/images/carboncycle.jpg
  8. 8. The Geological (Long-term) Carbon Cycle Source: NASA
  9. 9. Processes <ul><li>Photosynthesis: removes CO 2 from atmosphere </li></ul><ul><li>energy (sunlight) + 6CO 2 + H 2 O = C 6 H 12 O 6 + 6O 2 </li></ul><ul><li>Respiration: adds CO2 to atmosphere </li></ul><ul><li>C 6 H 12 O 6 (organic matter) + 6O 2 = 6CO 2 + 6 H 2 O + energy </li></ul>
  10. 10. http://www.windows.ucar.edu/earth/climate/images/carboncycle.jpg
  11. 11. Human Impacts on the Carbon Cycle http://oco.jpl.nasa.gov/images/carbon_cycle-br.jpg

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