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 transcript:

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

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

Pg = petagram = g

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

Uncertainties

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

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

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

Role of Photosynthesis

Additional Terminology DIC pCO 2 TA B different pH terms

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

Note: pH scale is reversed

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