Figure : caq_observed_projected_global_temps

Observed and Projected Changes in Global Temperature

Figure -.10

North Carolina State University
Kenneth E. Kunkel

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 both observed and projected changes in global average temperature. Under a representative concentration pathway (RCP) consistent with a higher scenario (RCP8.5; red) by 2080–2099, global average temperature is projected to increase by 4.2°–8.5°F (2.4°–4.7°C; burnt orange shaded area) relative to the 1986–2015 average. Under a lower scenario (RCP4.5; blue) global average temperature is projected to increase by 1.7°–4.4°F (0.9°–2.4°C; range not shown on graph) relative to 1986–2015. Under an even lower scenario (RCP2.6; green) temperature increases could be limited to 0.4°–2.7°F (0.2°–1.5°C; green shaded area) relative to 1986–2015. Limiting the rise in global average temperature to less than 2.2°F (1.2°C) relative to 1986–2015 is approximately equivalent to 3.6°F (2°C) or less relative to preindustrial temperatures. Thick lines within shaded areas represent the average of multiple climate models. The shaded regions illustrate the 5% to 95% confidence intervals for the respective projections. Source: adapted from Wuebbles et al. 2017.666daffe-2c3b-4e2d-9157-16b989860618

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This figure was created on June 14, 2017.

This figure was submitted on December 03, 2018.


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