Fall 2011 Writing 20:Ocean Acidification August 31, 2011 Lecture 1:
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Transcript of Fall 2011 Writing 20:Ocean Acidification August 31, 2011 Lecture 1:
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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 http://aslo.org/lectures/11_005/11_005_rfeely_sdoney.html
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Outline
• Overview of “The Other CO2 Problem”• The chemistry• Measuring and monitoring• Local influences on ocean acidification
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Pg = petagram = 1012 g
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pH ↓ 0.1 since industrial revolution
From Doney et al. 2009
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Uncertainties
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Outline
• Overview of “The Other CO2 Problem”• The chemistry• Measuring and monitoring• Local influences on ocean acidification
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pH = - log [H+] Acid is a substance that donates H+ ionsBase is a chemical that accepts H+ ions
pH scale
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Two key biological processes relevant to acid-base chemistry in
the oceans:
1. Calcium carbonate (CaCO3) production2. Photosynthesis (carbon fixation)
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Role of Photosynthesis
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Additional Terminology
DIC
pCO2
TA
B
different pH terms
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Outline
• Overview of “The Other CO2 Problem”• The chemistry• Measuring and monitoring• Local influences on ocean acidification
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Note: pH scale is reversed
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Outline
• Overview of “The Other CO2 Problem”• The chemistry• Measuring and monitoring• Local influences on ocean acidification
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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