1. CHEM 304 - 4/2/12 I.D. Climate Change: - Quick Review - Greenhouse gases (GHG’s): - Structural features - Identification - Sources / Sinks - Effectiveness: GWP Read Chapter 6 & 7

2. The global radiation balance —> 3 Main climate Influences

5. Does a substance absorb/emit IR? Atoms or Molecules? No Diatomic or Polyatomic? Yes Homonuclear or Heteronuclear? No Yes

8. Atmosphere (CO 2 mainly…750Pg) Biosphere (marine) (C 6 H 12 O 6 - carbohydrates) Biosphere (terrestrial) (C 6 H 12 O 6 - carbohydrates) Hydrosphere (H 2 CO 3 - “Carbonic acid”) Pedosphere (rocks) (CaCO 3 - “Carbonates”) Fossil Fuels (Coal mainly…5000Pg) A A B’ B B C D D’ Deforestation = either “B” (burning) or “A-” B

9. A)Photosynthesis: C 6 H 12 O 6 + 6 O 2 —> 6 CO 2 + 6 H 2 O B)Respiration: 6 CO 2 + 6 H 2 O —> C 6 H 12 O 6 + 6 O 2 C)Uptake: CO 2 + H 2 O —> *H 2 CO 3 Note: upper layer of ocean is “saturated”.. (*Carbonic Acid —> leads to Ocean Acidification …) D) Deposition (or mineralization):(SLOW!!!) Land: CO 2 + CaO —> CaCO 3 (s) (aka limestone …) Water: (*H 2 CO 3 2 H + + CO 3 -2 ) CO 3 -2 + Ca +2 —> CaCO 3 (s)

10. http://www.epa.gov/climatecha nge/emissions/usinventoryrepo rt.html http://www.epa.gov/climatecha nge/emissions/usinventoryrepo rt.html