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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 8, issue 6 | Copyright
Atmos. Chem. Phys., 8, 1723-1735, 2008
https://doi.org/10.5194/acp-8-1723-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  25 Mar 2008

25 Mar 2008

Short-lived pollutants in the Arctic: their climate impact and possible mitigation strategies

P. K. Quinn1, T. S. Bates1, E. Baum2, N. Doubleday3, A. M. Fiore4, M. Flanner5, A. Fridlind6, T. J. Garrett7, D. Koch6, S. Menon8, D. Shindell6, A. Stohl9, and S. G. Warren10 P. K. Quinn et al.
  • 1NOAA Pacific Marine Environmental Laboratory, Seattle, WA, USA
  • 2Clean Air Task Force, Boston, MA, USA
  • 3Carleton University, Ottawa, ON, Canada
  • 4NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, USA
  • 5Advanced Study Program, NCAR, Boulder, CO, USA
  • 6NASA Goddard Institute for Space Sciences, New York, NY, USA
  • 7University of Utah, Salt Lake City, UT, USA
  • 8Lawrence Berkeley National Laboratory, Berkeley, CA, USA
  • 9Norwegian Institute for Air Research, Kjeller, Norway
  • 10University of Washington, Seattle, WA, USA

Abstract. Several short-lived pollutants known to impact Arctic climate may be contributing to the accelerated rates of warming observed in this region relative to the global annually averaged temperature increase. Here, we present a summary of the short-lived pollutants that impact Arctic climate including methane, tropospheric ozone, and tropospheric aerosols. For each pollutant, we provide a description of the major sources and the mechanism of forcing. We also provide the first seasonally averaged forcing and corresponding temperature response estimates focused specifically on the Arctic. The calculations indicate that the forcings due to black carbon, methane, and tropospheric ozone lead to a positive surface temperature response indicating the need to reduce emissions of these species within and outside the Arctic. Additional aerosol species may also lead to surface warming if the aerosol is coincident with thin, low lying clouds. We suggest strategies for reducing the warming based on current knowledge and discuss directions for future research to address the large remaining uncertainties.

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