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AGU: Geophysical Research Letters

 

Keywords

  • Ozone Monitoring Instrument
  • NO2
  • Beijing
  • traffic restrictions
  • NOX emissions

Index Terms

  • Atmospheric Composition and Structure: Troposphere: composition and chemistry
  • Atmospheric Composition and Structure: Pollution: urban and regional
  • Atmospheric Composition and Structure: Constituent sources and sinks
  • Biogeosciences: Remote sensing

Abstract

Traffic restrictions associated with the Sino-African summit: Reductions of NOx detected from space

Yuxuan Wang

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

Michael B. McElroy

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

K. Folkert Boersma

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

Henk J. Eskes

Royal Netherlands Meteorological Institute, De Bilt, Netherlands

J. Pepijn Veefkind

Royal Netherlands Meteorological Institute, De Bilt, Netherlands

Aggressive measures were instituted by the Beijing municipal authorities to restrict vehicular traffic in the Chinese capital during the recent Sino-African Summit. We show that reductions in associated emissions of NOx were detected by the Dutch-Finnish Ozone Monitoring Instrument (OMI) aboard the Aura satellite. Interpretation of these data using a 3-dimensional chemical transport model indicates that emissions of NOx were reduced by 40% over the period of November 4 to 6, 2006, for which the restrictions were in place.

Received 11 January 2007; accepted 27 March 2007; published 28 April 2007.

Citation: Wang, Y., M. B. McElroy, K. F. Boersma, H. J. Eskes, and J. P. Veefkind (2007), Traffic restrictions associated with the Sino-African summit: Reductions of NOx detected from space, Geophys. Res. Lett., 34, L08814, doi:10.1029/2007GL029326.

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