1. Fall 2011 Writing 20:Ocean Acidification August 31, 2011 Lecture 1: “Introduction to Ocean Acidification” Some of this lecture obtained from http://aslo.org/lectures/11_005/11_005_rfeely_sdoney.htmlhttp://aslo.org/lectures/11_005/11_005_rfeely_sdoney.html

2. Outline Overview of “The Other CO 2 Problem” The chemistry Measuring and monitoring Local influences on ocean acidification

3. Pg = petagram = 10 12 g

4. pH ↓ 0.1 since industrial revolution From Doney et al. 2009

6. Uncertainties

7. Outline Overview of “The Other CO 2 Problem” The chemistry Measuring and monitoring Local influences on ocean acidification

8. pH = - log [H + ] Acid is a substance that donates H + ions Base is a chemical that accepts H + ions pH scale

12. Two key biological processes relevant to acid-base chemistry in the oceans: 1.Calcium carbonate (CaCO 3 ) production 2.Photosynthesis (carbon fixation)

15. Role of Photosynthesis

17. Additional Terminology DIC pCO 2 TA B different pH terms

18. Outline Overview of “The Other CO 2 Problem” The chemistry Measuring and monitoring Local influences on ocean acidification

20. Note: pH scale is reversed

23. Outline Overview of “The Other CO 2 Problem” The chemistry Measuring and monitoring Local influences on ocean acidification

31. http://www.pmel.noaa.gov/co2/story/Ocean+Acidification http://www.whoi.edu/OCB-OA/FAQs/ http://oceanacidification.wordpress.com/ http://www.us-ocb.org/publications/OCB_OA_rept.pdf http://www.whoi.edu/sites/OceanAcidificationMeeting http://tos.org/oceanography/issues/issue_archive/22_4.html