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URBAN AIR QUALITY

Tracking pollutant emissions

Progress in the post-combustion treatment of diesel vehicle exhaust has led to shifting proportions of the constituents of nitrogen oxides. Observations from 61 European cities suggest that the outlook on attaining NO2 standards is more optimistic than expected.

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References

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    Sanchez, F. P., Bandivadekar, A. & German, J. Estimated Cost of Emission Reduction Technologies for Light-Duty Vehicles (ICCT, 2012).

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    Posada, F., Chambliss, S. & Blumberg, K. Costs of Emission Reduction Technologies for Heavy-Duty Diesel Vehicles (ICCT, 2016).

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    Grange, S. K., Lewis, A. C., Moller, S. J. & Carslaw, D. C. Lower vehicular primary emissions of NO2 in Europe than assumed in policy projections. Nat. Geosci. https://doi.org/10.1038/s41561-017-0009-0 (2017).

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    Hoek, G. et al. Long-term air pollution exposure and cardio- respiratory mortality: a review. Environ. Heal. 12, 43 (2013).

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    Anenberg, S. C. et al. Impacts and mitigation of excess diesel-related NO x emissions in 11 major vehicle markets. Nature 545, 467–471 (2017).

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    Cities Driving Diesel Out of the European Car Market (ICCT, 16 May 2017); http://www.theicct.org/blogs/staff/cities-driving-diesel-out-european-car-market

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    Carslaw, D. C., Murrells, T. P., Andersson, J. & Keenan, M. Have vehicle emissions of primary NO2 peaked? Faraday Discuss. 189, 439–454 (2016).

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    Dallmann, T. R., Harley, R. A. & Kirchstetter, T. W. Effects of diesel particle filter retrofits and accelerated fleet turnover on drayage truck emissions at the Port of Oakland. Environ. Sci. Technol. 45, 10773–10779 (2011).

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    Dallmann, T. R. et al. On-road measurement of gas and particle phase pollutant emission factors for individual heavy-duty diesel trucks. Environ. Sci. Technol. 46, 8511–8518 (2012).

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    Gentner, D. R. et al. Review of urban secondary organic aerosol formation from gasoline and diesel motor vehicle emissions. Environ. Sci. Technol. 51, 1074–1093 (2017).

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Author information

Affiliations

  1. Department of Chemical & Environmental Engineering, Yale University, New Haven, CT, USA

    • Drew R. Gentner
    •  & Fulizi Xiong
  2. SEARCH (Solutions for Energy, Air, Climate and Health) Center, Yale University, New Haven, CT, USA

    • Drew R. Gentner
    •  & Fulizi Xiong
  3. School of Forestry and Environmental Sciences, Yale University, New Haven, CT, USA

    • Drew R. Gentner

Authors

  1. Search for Drew R. Gentner in:

  2. Search for Fulizi Xiong in:

Competing interests

D.R.G. and F.X. have externally funded research projects on low-cost air quality monitoring networks, and Yale University has licensed out their technology.

Corresponding author

Correspondence to Drew R. Gentner.