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Fall 2011 Writing 20:Ocean Acidification August 31, 2011 Lecture 1: “Introduction to Ocean Acidification” Some of this lecture obtained from

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Presentation on theme: "Fall 2011 Writing 20:Ocean Acidification August 31, 2011 Lecture 1: “Introduction to Ocean Acidification” Some of this lecture obtained from"— Presentation transcript:

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

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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

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

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15 Role of Photosynthesis

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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

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20 Note: pH scale is reversed

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

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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

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