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AGU: Geophysical Research Letters

 

Index Terms

  • Atmospheric Composition and Structure: Evolution of the atmosphere
  • Atmospheric Composition and Structure: Pollution—urban and regional
  • Atmospheric Composition and Structure: Troposphere—constituent transport and chemistry

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, 1919, 4 PP., 2002
doi:10.1029/2002GL015601

Linking ozone pollution and climate change: The case for controlling methane

Arlene M. Fiore

Department of Earth and Planetary Sciences and Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA

Daniel J. Jacob

Department of Earth and Planetary Sciences and Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA

Brendan D. Field

Department of Earth and Planetary Sciences and Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA

David G. Streets

Argonne National Laboratory, Argonne, IL, USA

Suneeta D. Fernandes

Argonne National Laboratory, Argonne, IL, USA

Carey Jang

USEPA/OAQPS MC: D243-01, RTP, NC, USA

Methane (CH4) emission controls are found to be a powerful lever for reducing both global warming and air pollution via decreases in background tropospheric ozone (O3). Reducing anthropogenic CH4 emissions by 50% nearly halves the incidence of U.S. high-O3 events and lowers global radiative forcing by 0.37 W m−2 (0.30 W m−2 from CH4, 0.07 W m−2 from O3) in a 3-D model of tropospheric chemistry. A 2030 simulation based upon IPCC A1 emissions projections shows a longer and more intense U.S. O3 pollution season despite domestic emission reductions, indicating that intercontinental transport and a rising O3 background should be considered when setting air quality goals.

Published 8 October 2002.

Citation: Fiore, A. M., D. J. Jacob, B. D. Field, D. G. Streets, S. D. Fernandes, and C. Jang (2002), Linking ozone pollution and climate change: The case for controlling methane, Geophys. Res. Lett., 29(19), 1919, doi:10.1029/2002GL015601.

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