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The Arctic temperature response to emissions of aerosols—specifically black carbon ( BC ), organic carbon ( OC ), and sulfate—depends on both the sector and the region where these emissions originate. Thus, the net Arctic temperature response to global aerosol emissions reductions will depend strongly on the blend of emissions sources being targeted. We use recently published equilibrium Arctic temperature response factors for  BC ,  OC , and sulfate to estimate the range of present‐day and future Arctic temperature changes from seven different aerosol emissions scenarios. Globally, Arctic temperature changes calculated from all of these emissions scenarios indicate that present‐day emissions from the domestic and transportation sectors generate the majority of present‐day Arctic warming from  BC . However, in all of these scenarios, this warming is more than offset by cooling resulting from  SO 2   emissions from the energy sector. Thus, long‐term climate mitigation strategies that are focused on reducing carbon dioxide ( CO 2  ) emissions from the energy sector could generate short‐term, aerosol‐induced Arctic warming. A properly phased approach that targets  BC ‐rich emissions from the transportation sector as well as the domestic sectors in key regions—while simultaneously working toward longer‐term goals of  CO 2   mitigation—could potentially avoid some amount of short‐term Arctic warming.

Future Arctic temperature change resulting from a range of aerosol emissions scenarios