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Lecture 1: GEOL330/634 Chemical Oceanography Prof: Jim Murray 1.Introduce Murray 2. Who are the Students? 3. Syllabus / Text (Emerson and Hedges) 4. Course.

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Presentation on theme: "Lecture 1: GEOL330/634 Chemical Oceanography Prof: Jim Murray 1.Introduce Murray 2. Who are the Students? 3. Syllabus / Text (Emerson and Hedges) 4. Course."— Presentation transcript:

1 Lecture 1: GEOL330/634 Chemical Oceanography Prof: Jim Murray 1.Introduce Murray 2. Who are the Students? 3. Syllabus / Text (Emerson and Hedges) 4. Course web site: http: //www.ocean.washington.edu/courses/geol330/http: //www.ocean.washington.edu/courses/geol330/ 5. Themes for course 6. What do we want students to be able to do? 7. How will we know what they can do? Problem Sets (7), Paper Discussions (7), Mid-Term (1) 8. Course Activities / Materials 9. Greatest Challenges for Students

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3 Four Main Themes 1.Global Carbon Cycle 2.Are humans changing the chemistry of the ocean? 3.What are chemical controls and tracers for biological production? 4. What is the fate of organic matter made by biological production?

4 Global Carbon Cycle

5 Sabine et al. (2004) SCOPE Reservoirs and Fluxes

6 Mauna Loa CO 2 record – Started by David Keeling (SIO) NOAA-ERL Data Latest CO 2 Reading 399.00 ppm July, 2014

7 Source of anthropogenic CO 2

8 Source: C. D. Keeling and T. P. Whorf; Etheridge et.al.; Barnola et.al.; (PAGES / IGBP); IPCC (BP 1950) Projected (2100) Current (2001) CO 2 Concentration (ppmv) Vostok Record Law Dome Record Mauna Loa Record IPCC IS92a Scenario

9 Carbon Tracker Atmospheric CO2 from 800,000 years ago to the present http://www.youtube.com/watch?v=bbgUE04Y-Xg

10 Are Humans Changing the Composition of the Ocean? Yes, in may ways! Examples include: Ocean Acidification Lead and Mercury distributions Nitrate distributions Fukushima radionuclides

11 Because the ocean mixes slowly, half of the anthropogenic CO 2 stored in the oceans is found in the upper 10% of the ocean. Sabine et al. Science (2004) Global Anthropogenic CO 2 Inventory = 118±19 Pg C

12 Chemistry, Biology and Circulation

13 Nitrate concentrations High Nutrient-Low Chlorophyll regions:

14 Fate of Organic Matter

15 Source: JGOFS / IGBP CO 2 Preindustrial CO2: maximum strength bio pump: 160 ppm Preindustrial CO2: Physical pump alone: 400 ppm Oceanic Primary Production: Sept. 97 – Aug. 98 CO 2 Biological PumpPhysical (solubility) Pump

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