Estimated ocean acidification for approximately 2005, 2030, and 2050 under business-as-usual emissions scenario

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Figure 4-5 Estimated aragonite saturation state (an indicator of ocean acidification) for CO2 stabilization levels of 380 ppm, 450 ppm, and 500 ppm, corresponding approximately to the years 2005, 2030, and 2050 under the IPCC A1B (business-as-usual) emissions scenario.

(From Reefs at Risk Revisited, 2011, courtesy of World Resources Institute.)