Articles | Volume 16, issue 5
Research article
17 Mar 2016
Research article |  | 17 Mar 2016

The importance of vehicle emissions as a source of atmospheric ammonia in the megacity of Shanghai

Yunhua Chang, Zhong Zou, Congrui Deng, Kan Huang, Jeffrey L. Collett, Jing Lin, and Guoshun Zhuang

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Cited articles

Aneja, V. P., Chauhan, J. P., and Walker, J. T.: Characterization of atmospheric ammonia emissions from swine waste storage and treatment lagoons, J. Geophys. Res., 105, 11535–11545,, 2000.
Asman, W. A., Sutton, M. A., and Schjørring, J. K.: Ammonia: emission, atmospheric transport and deposition, New Phytol., 139, 27–48,, 1998.
Bari, A., Ferraro, V., Wilson, L. R., Luttinger, D., and Husain, L.: Measurements of gaseous HONO, HNO3, SO2, HCl, NH3, particulate sulfate and PM2.5 in New York, NY, Atmos. Environ., 37, 2825–2835,, 2003.
Behera, S. N., Sharma, M., Aneja, V. P., and Balasubramanian, R.: Ammonia in the atmosphere: a review on emission sources, atmospheric chemistry and deposition on terrestrial bodies, Environ. Sci. Pollut. R. Int., 20, 8092–8131,, 2013.
Bettez, N. D., Marino, R., Howarth, R. W., and Davidson, E. A.: Roads as nitrogen deposition hot spots, Biogeochem., 114, 149–163,, 2013.
Short summary
This study linked a long-term and near real-time measurement of NH3 at one of China’s flagship supersites with a vehicle source-specific campaign performed inside and outside of a major freeway tunnel in Shanghai. Our results clearly show that vehicle emissions associated with combustion are an important NH3 source in Shanghai urban areas and may have potential implications for PM2.5 pollution in the urban atmosphere.
Final-revised paper