Figure : effects-of-acidification--warming--and-sea-level-rise-on-ocean-physics-and-chemistry-as-well-as-impacts-on-organisms-and-ecosystem-services-according-to-stringent--representative-concentration-pathway---rcp-2-6---and-high-business-as-usual--rcp-8-5--co2-emissions-scenarios-

Ocean Impacts Projected by High and Low Carbon Dioxide (CO2) Emissions Scenarios

Figure 17.5

This figure appears in chapter 17 of the Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report report.

Impacts on organisms and ecosystem services are shown—along with effects of acidification, warming, and sea level rise on ocean physics and chemistry—for both a low CO2 emissions scenario (Representative Concentration Pathway [RCP]2.6), and for a high CO2 scenario (RCP8.5). (See Ch. 19: Future of the North American Carbon Cycle for RCP explanations, p. 760.) Physical impacts on the ocean due to higher atmospheric CO2 levels are largely related to the climatic effects of CO2 and other radiatively active, anthropogenically released gases. These impacts include higher sea levels and shallower oceanic mixing (right-side water column, shown by a taller water level and shallower light aqua mixed layer). More severe risks of impacts from higher oceanic CO2 levels on ocean taxa (top group, black text) in higher CO2 emissions scenarios (center right) correspond to higher risks of impacts on ecosystem services (bottom group, white text, center right). Management options (i.e., activities that will mitigate, adapt, protect, or repair marine systems) are more numerous and more effective in lower CO2 scenarios (far left) compared with those in a higher CO2 world (far right). [Figure source: Adapted from Gattuso et al., 2015.]

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This figure was created on February 16, 2018.

This figure was submitted on February 11, 2019.

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