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Ocean
Acidification
Summary for
Policymakers 2013
International Geosphere-Biosphere
Programme
Intergovernmental Oceanograp...
• 26 % increase in acidity due to CO2
emissions
• Many organisms show adverse effects
(corals, molluscs)
• Some thrive (e....
pH 1850
pH 2100
Aragonite saturation 1850
Aragonite saturation 2100
Commercially important organisms
After Peters et al., 2013
Observed CO2 emissions and
emissions scenarios to 2100
Confidence levels (IPCC)
iStockhphoto.com/ermingut
Atmospheric CO2 and ocean pH
After Bopp et al., 2013
3.2°–5.4°C
Global
temperature
increase likely
by 2100:
0.9°–2.3°C
Ocean surface pH projections to ...
Turley et al., 2006
Rapid ocean acidification
Jason Hall-Spencer
Winners and losers
Hot, sour and breathless
Molluscs
iStockphoto.com/Eduardo Luzzatti
Coral Reefs
iStockphoto.com/t.light
Changes in marine ecosystems
iStockphoto.com/Richard Carey
Calcifying organisms
Ulf Riebesell; GEOMAR
Marine snails
Steve Ringman
Fish behaviour
Nitrogen fixation stimulated
NASA's Goddard Space Flight Center/USGS)
Economic losses
iStockphoto.com/Thomas Bradford
Economic losses
Fisheries
Biogeochemical cycles
www.ocean-acidification.net
IGBP, IOC, SCOR (2013). Ocean Acidification Summary for Policymakers – Third Symposium on the
Ocean in a High-CO2 World. I...
Ocean Acidification Summary for Policymakers (2013)
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Ocean Acidification Summary for Policymakers (2013)

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The Ocean Acidification Summary for Policymakers was published in 2013. It summarises key findings from the Ocean in a High CO2 World Symposium, which is sponsored by the International Geosphere-Biosphere Programme, the Intergovernmental Oceanographic Commission of UNESCO and the Scientific Committee on Oceanic Research.

For more information
http://ocean-acidification.net/

Summary for Policymakers
http://www.igbp.net/publications/summariesforpolicymakers/summariesforpolicymakers/oceanacidificationsummaryforpolicymakers2013.5.30566fc6142425d6c9111f4.html

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  • To be launched at COP-19 in Warsaw in November.Unique features:- Great infographics- Confidence levels (like IPCC) on statementsNB. First bullet: Oceans [H+] has increased by 26 % since the start of the industrial revolutionEcosystems will change in the future, but how is difficult to predictThe magnitude of the socio-economic impacts are uncertain.Some people will need to adapt. E.g. Shellfish industry is already adapting on Pacific US coast.
  • http://www.igbp.net/download/18.30566fc6142425d6c91140a/1385975160621/OA_spm2-FULL-lorez.pdf
  • Transcript of "Ocean Acidification Summary for Policymakers (2013)"

    1. 1. Ocean Acidification Summary for Policymakers 2013 International Geosphere-Biosphere Programme Intergovernmental Oceanographic Commission of UNESCO Scientific Committee on Oceanic Research Wendy Broadgate, IGBP Deputy Director (2014)
    2. 2. • 26 % increase in acidity due to CO2 emissions • Many organisms show adverse effects (corals, molluscs) • Some thrive (e.g. seagrasses) • Ecosystems will change in the future • There will be socio-economic impacts and need for adaptation • Reducing CO2 emissions will reduce impacts
    3. 3. pH 1850
    4. 4. pH 2100
    5. 5. Aragonite saturation 1850
    6. 6. Aragonite saturation 2100
    7. 7. Commercially important organisms
    8. 8. After Peters et al., 2013 Observed CO2 emissions and emissions scenarios to 2100
    9. 9. Confidence levels (IPCC)
    10. 10. iStockhphoto.com/ermingut
    11. 11. Atmospheric CO2 and ocean pH
    12. 12. After Bopp et al., 2013 3.2°–5.4°C Global temperature increase likely by 2100: 0.9°–2.3°C Ocean surface pH projections to 2100
    13. 13. Turley et al., 2006 Rapid ocean acidification
    14. 14. Jason Hall-Spencer Winners and losers
    15. 15. Hot, sour and breathless
    16. 16. Molluscs iStockphoto.com/Eduardo Luzzatti
    17. 17. Coral Reefs iStockphoto.com/t.light
    18. 18. Changes in marine ecosystems iStockphoto.com/Richard Carey
    19. 19. Calcifying organisms Ulf Riebesell; GEOMAR
    20. 20. Marine snails Steve Ringman
    21. 21. Fish behaviour
    22. 22. Nitrogen fixation stimulated NASA's Goddard Space Flight Center/USGS)
    23. 23. Economic losses iStockphoto.com/Thomas Bradford
    24. 24. Economic losses
    25. 25. Fisheries
    26. 26. Biogeochemical cycles
    27. 27. www.ocean-acidification.net
    28. 28. IGBP, IOC, SCOR (2013). Ocean Acidification Summary for Policymakers – Third Symposium on the Ocean in a High-CO2 World. International Geosphere-Biosphere Programme, Stockholm, Sweden. Authors Wendy Broadgate, IGBP Ulf Riebesell, Germany Claire Armstrong, Norway Peter Brewer, USA Ken Denman, Canada Richard Feely, USA Kunshan Gao, China Jean-Pierre Gattuso, France Kirsten Isensee, IOC-UNESCO Joan Kleypas, USA Dan Laffoley, UK James Orr, France Hans-Otto Pörtner, Germany Carlos Eduardo de Rezende, Brazil Daniela Schmidt, UK Ed Urban, SCOR Anya Waite, Australia Luis Valdés, IOC-UNESCO Wendy Broadgate, IGBP Deputy Director (2014) wendy@igbp.kva.se www.ocean-acidification.net
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