Influences of emission sources and meteorology on aerosol chemistry in a  polluted urban environment: results from DISCOVER-AQ California

Young, Dominique E.; Kim, Hwajin; Parworth, Caroline; Zhou, Shan; Zhang, Xiaolu; Cappa, Christopher D.; Seco, Roger; Kim, Saewung; Zhang, Qi

doi:https://doi.org/10.5194/acp-16-5427-2016

Articles | Volume 16, issue 8

https://doi.org/10.5194/acp-16-5427-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-5427-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 8

Research article

|

02 May 2016

Research article |

| 02 May 2016

Influences of emission sources and meteorology on aerosol chemistry in a polluted urban environment: results from DISCOVER-AQ California

Dominique E. Young, Hwajin Kim, Caroline Parworth, Shan Zhou, Xiaolu Zhang, Christopher D. Cappa, Roger Seco, Saewung Kim, and Qi Zhang

Supplement

https://doi.org/10.5194/acp-16-5427-2016-supplement

Data sets

Air Quality and Emissions CARB: California Air Resources Board http://www.arb.ca.gov/html/ds.htm

NASA DISCOVER-AQ project data NASA http://www-air.larc.nasa.gov/missions/discover-aq/discover-aq.html

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Short summary

Aerosol chemistry and the sources and processes driving the observed temporal and diurnal variations of PM were studied in a polluted urban environment during winter 2013. These results were compared to a similar campaign from winter 2010. Meteorology strongly influenced PM composition, both directly and indirectly. Nighttime reactions played a more important role in 2013 and the influence from a nighttime formed residual layer that mixed down in the morning was also much more intense in 2013.