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GEOPHYSICAL RESEARCH LETTERS,
VOL. 34,
L08814,
doi:10.1029/2007GL029326,
2007
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
Abstract
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.
Keywords: Ozone Monitoring Instrument;
NO2;
Beijing;
traffic restrictions;
NOX emissions.
Index Terms: 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 0345 Atmospheric Composition and Structure: Pollution: urban and regional (0305, 0478, 4251); 0322 Atmospheric Composition and Structure: Constituent sources and sinks; 0480 Biogeosciences: Remote sensing.
Read Full Article (file size: 367524 bytes) Cited by
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.
Copyright 2007 by the American Geophysical Union.
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