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On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave. / Wu, Jianbin; Wang, Qian; Chen, Huansheng et al.
In: Aerosol and Air Quality Research, Vol. 17, No. 11, 31.10.2017, p. 2804-2815.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wu, J, Wang, Q, Chen, H, Zhang, Y & Wild, O 2017, 'On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave', Aerosol and Air Quality Research, vol. 17, no. 11, pp. 2804-2815. https://doi.org/10.4209/aaqr.2017.03.0101

APA

Wu, J., Wang, Q., Chen, H., Zhang, Y., & Wild, O. (2017). On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave. Aerosol and Air Quality Research, 17(11), 2804-2815. https://doi.org/10.4209/aaqr.2017.03.0101

Vancouver

Wu J, Wang Q, Chen H, Zhang Y, Wild O. On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave. Aerosol and Air Quality Research. 2017 Oct 31;17(11):2804-2815. doi: 10.4209/aaqr.2017.03.0101

Author

Wu, Jianbin ; Wang, Qian ; Chen, Huansheng et al. / On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave. In: Aerosol and Air Quality Research. 2017 ; Vol. 17, No. 11. pp. 2804-2815.

Bibtex

@article{d0d66b2abf2649a89a908b4a7b8ccf78,
title = "On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave",
abstract = "A heat wave with temperatures over 35°C and sunny stagnant meteorological conditions occurred in Shanghai from 27 July to 5 August 2015, leading to a sustained episode of high ozone lasting 12 days. We have conducted a detailed source apportionment of surface ozone, by precursor source category and region, using a photochemical transport model. In this episode, a southwesterly wind prevailed over the Yangtze River Delta, and therefore precursors from the local Shanghai region and the region immediately to the south of Shanghai are the two major contributors (in total 90%) to ozone in Shanghai. The source apportionment reveals that local industrial sources and energy/biogenic sources in neighbouring regions are the principal causes for the high levels of ozone. By examining the contributions from individual physical and chemical processes, we show that ozone concentrations start to rise rapidly in the morning because chemical production dominates as the solar radiation increases, and while there is little removal by deposition when ozone remains low. In general, chemical production, horizontal advection and vertical diffusion contribute to increase ozone concentration during daytime, and deposition and vertical advection reduce ozone concentrations.",
keywords = "Ozone, Source apportionment, Process analysis , Heatwaves, Shanghai, Modelling, Meteorology",
author = "Jianbin Wu and Qian Wang and Huansheng Chen and Yuqia Zhang and Oliver Wild",
year = "2017",
month = oct,
day = "31",
doi = "10.4209/aaqr.2017.03.0101",
language = "English",
volume = "17",
pages = "2804--2815",
journal = "Aerosol and Air Quality Research",
issn = "1680-8584",
publisher = "Taiwan Association for Aerosol Research",
number = "11",

}

RIS

TY - JOUR

T1 - On the Origin of Surface Ozone Episode in Shanghai over Yangtze River Delta during a Prolonged Heat Wave

AU - Wu, Jianbin

AU - Wang, Qian

AU - Chen, Huansheng

AU - Zhang, Yuqia

AU - Wild, Oliver

PY - 2017/10/31

Y1 - 2017/10/31

N2 - A heat wave with temperatures over 35°C and sunny stagnant meteorological conditions occurred in Shanghai from 27 July to 5 August 2015, leading to a sustained episode of high ozone lasting 12 days. We have conducted a detailed source apportionment of surface ozone, by precursor source category and region, using a photochemical transport model. In this episode, a southwesterly wind prevailed over the Yangtze River Delta, and therefore precursors from the local Shanghai region and the region immediately to the south of Shanghai are the two major contributors (in total 90%) to ozone in Shanghai. The source apportionment reveals that local industrial sources and energy/biogenic sources in neighbouring regions are the principal causes for the high levels of ozone. By examining the contributions from individual physical and chemical processes, we show that ozone concentrations start to rise rapidly in the morning because chemical production dominates as the solar radiation increases, and while there is little removal by deposition when ozone remains low. In general, chemical production, horizontal advection and vertical diffusion contribute to increase ozone concentration during daytime, and deposition and vertical advection reduce ozone concentrations.

AB - A heat wave with temperatures over 35°C and sunny stagnant meteorological conditions occurred in Shanghai from 27 July to 5 August 2015, leading to a sustained episode of high ozone lasting 12 days. We have conducted a detailed source apportionment of surface ozone, by precursor source category and region, using a photochemical transport model. In this episode, a southwesterly wind prevailed over the Yangtze River Delta, and therefore precursors from the local Shanghai region and the region immediately to the south of Shanghai are the two major contributors (in total 90%) to ozone in Shanghai. The source apportionment reveals that local industrial sources and energy/biogenic sources in neighbouring regions are the principal causes for the high levels of ozone. By examining the contributions from individual physical and chemical processes, we show that ozone concentrations start to rise rapidly in the morning because chemical production dominates as the solar radiation increases, and while there is little removal by deposition when ozone remains low. In general, chemical production, horizontal advection and vertical diffusion contribute to increase ozone concentration during daytime, and deposition and vertical advection reduce ozone concentrations.

KW - Ozone

KW - Source apportionment

KW - Process analysis

KW - Heatwaves

KW - Shanghai

KW - Modelling

KW - Meteorology

U2 - 10.4209/aaqr.2017.03.0101

DO - 10.4209/aaqr.2017.03.0101

M3 - Journal article

VL - 17

SP - 2804

EP - 2815

JO - Aerosol and Air Quality Research

JF - Aerosol and Air Quality Research

SN - 1680-8584

IS - 11

ER -