Figure : caq_emissions_reductions_v3

Benefit of Earlier Action to Reduce Emissions

Figure -.23

U.S. Global Change Research Program
Matthew Dzaugis

This figure appears in chapter appendix-5-frequently-asked-questions of the Impacts, Risks, and Adaptation in the United States: The Fourth National Climate Assessment, Volume II report.

This figure shows possible future pathways for global annual emissions of GHGs for which the global mean temperature would likely (66%) not exceed 3.6oF (2oC) above the preindustrial average. The black curves on the bottom show the fastest reduction in emissions, with rapid near-term mitigation and little to no negative emissions required in the future. The red curves on top show slower rates of mitigation, with slow near-term reductions in emissions and large negative emission requirements in the future. Here, the annual global GHG emissions are in units of gigatons of CO2 equivalent, a measurement that expresses the warming impact of all GHGs in terms of the equivalent amount of CO2. Source: adapted from Sanderson et al. 2016.bf91f878-c82a-409b-8d96-e21320366a69

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This figure was created on June 15, 2017.

This figure was submitted on December 03, 2018.


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