O3 photochemistry on O3 episode days and non-O3 episode days in Wuhan, Central China

Jiaxin Zhu; Hairong Cheng; Jin Peng; Pei Zeng; Zuwu Wang; Xiaopu Lyu; Hai Guo

doi:10.1016/j.atmosenv.2019.117236

O₃ photochemistry on O₃ episode days and non-O₃ episode days in Wuhan, Central China

Jiaxin Zhu
, Hairong Cheng^*
, Jin Peng
, Pei Zeng
, Zuwu Wang
, Xiaopu Lyu
, Hai Guo

^*Corresponding author for this work

Academy of Geography, Sociology and International Studies

Research output: Contribution to journal › Journal article › peer-review

40 Citations (Scopus)

Abstract

Simultaneous field measurements of ozone (O₃) and its precursors were conducted at an urban site (Zi Yang, ZY) and a suburban site (Huang Pi, HP) in August 2018 in Wuhan, China. The observation results revealed that the mean levels of nitric oxide (NO), nitrogen dioxide (NO₂), carbon monoxide (CO) and non-methane hydrocarbons (NMHCs) were higher at ZY than those detected at HP, while the opposite trend was observed for O₃ levels. Compared to non-O₃ episode days, higher levels of O₃ and its precursors (i.e. NMHCs, NO and CO) were observed on O₃ episode days at both ZY and HP. A chemical box model was used to investigate the O₃ photochemistry on O₃ episode days and non-O₃ episode days at ZY and HP, and the O₃ production was found to be dominated by the reaction of HO₂ + NO at the two sites. In terms of O₃ destruction, OH + NO₂ was the major contributor at ZY, while the highest contribution at HP was from the reaction of O(¹D) + H₂O. The net O₃ production rates increased significantly from non-O₃ episode days to O₃ episode days at both ZY and HP, indicating increased O₃ accumulation on O₃ episode days. In addition, the model simulation indicated that O₃ formation was controlled by volatile organic compounds (VOCs) at ZY, whereas O₃ formation was cooperative controlled by VOCs and NO at HP. Overall, these findings can provide valuable information on formulating and implementing O₃ control strategies in urban and suburban areas in China.

Original language	English
Article number	117236
Number of pages	11
Journal	Atmospheric Environment
Volume	223
Early online date	20 Dec 2019
DOIs	https://doi.org/10.1016/j.atmosenv.2019.117236
Publication status	Published - Feb 2020

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities

User-Defined Keywords

Central China
Diurnal variation
Ozone
Photochemistry

Access to Document

10.1016/j.atmosenv.2019.117236

Cite this

@article{98a5d2173f6048079c46ad9a40c630f1,

title = "O3 photochemistry on O3 episode days and non-O3 episode days in Wuhan, Central China",

abstract = "Simultaneous field measurements of ozone (O3) and its precursors were conducted at an urban site (Zi Yang, ZY) and a suburban site (Huang Pi, HP) in August 2018 in Wuhan, China. The observation results revealed that the mean levels of nitric oxide (NO), nitrogen dioxide (NO2), carbon monoxide (CO) and non-methane hydrocarbons (NMHCs) were higher at ZY than those detected at HP, while the opposite trend was observed for O3 levels. Compared to non-O3 episode days, higher levels of O3 and its precursors (i.e. NMHCs, NO and CO) were observed on O3 episode days at both ZY and HP. A chemical box model was used to investigate the O3 photochemistry on O3 episode days and non-O3 episode days at ZY and HP, and the O3 production was found to be dominated by the reaction of HO2 + NO at the two sites. In terms of O3 destruction, OH + NO2 was the major contributor at ZY, while the highest contribution at HP was from the reaction of O(1D) + H2O. The net O3 production rates increased significantly from non-O3 episode days to O3 episode days at both ZY and HP, indicating increased O3 accumulation on O3 episode days. In addition, the model simulation indicated that O3 formation was controlled by volatile organic compounds (VOCs) at ZY, whereas O3 formation was cooperative controlled by VOCs and NO at HP. Overall, these findings can provide valuable information on formulating and implementing O3 control strategies in urban and suburban areas in China.",

keywords = "Central China, Diurnal variation, Ozone, Photochemistry",

author = "Jiaxin Zhu and Hairong Cheng and Jin Peng and Pei Zeng and Zuwu Wang and Xiaopu Lyu and Hai Guo",

note = "Funding Information: This study was supported by the National Key R\&D Program of China (grant numbers 2017YFC0212603 ), the Natural Science Foundation of China (NSFC) (grant number 41673102 ), and Wuhan Youth Science and Technology Program (grant number 2017050304010310 ). Appendix A Funding Information: This study was supported by the National Key R\&D Program of China (grant numbers 2017YFC0212603), the Natural Science Foundation of China (NSFC) (grant number 41673102), and Wuhan Youth Science and Technology Program (grant number 2017050304010310). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = feb,

doi = "10.1016/j.atmosenv.2019.117236",

language = "English",

volume = "223",

journal = "Atmospheric Environment",

issn = "1352-2310",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - O3 photochemistry on O3 episode days and non-O3 episode days in Wuhan, Central China

AU - Zhu, Jiaxin

AU - Cheng, Hairong

AU - Peng, Jin

AU - Zeng, Pei

AU - Wang, Zuwu

AU - Lyu, Xiaopu

AU - Guo, Hai

N1 - Funding Information: This study was supported by the National Key R&D Program of China (grant numbers 2017YFC0212603 ), the Natural Science Foundation of China (NSFC) (grant number 41673102 ), and Wuhan Youth Science and Technology Program (grant number 2017050304010310 ). Appendix A Funding Information: This study was supported by the National Key R&D Program of China (grant numbers 2017YFC0212603), the Natural Science Foundation of China (NSFC) (grant number 41673102), and Wuhan Youth Science and Technology Program (grant number 2017050304010310). Publisher Copyright: © 2019 Elsevier Ltd

PY - 2020/2

Y1 - 2020/2

N2 - Simultaneous field measurements of ozone (O3) and its precursors were conducted at an urban site (Zi Yang, ZY) and a suburban site (Huang Pi, HP) in August 2018 in Wuhan, China. The observation results revealed that the mean levels of nitric oxide (NO), nitrogen dioxide (NO2), carbon monoxide (CO) and non-methane hydrocarbons (NMHCs) were higher at ZY than those detected at HP, while the opposite trend was observed for O3 levels. Compared to non-O3 episode days, higher levels of O3 and its precursors (i.e. NMHCs, NO and CO) were observed on O3 episode days at both ZY and HP. A chemical box model was used to investigate the O3 photochemistry on O3 episode days and non-O3 episode days at ZY and HP, and the O3 production was found to be dominated by the reaction of HO2 + NO at the two sites. In terms of O3 destruction, OH + NO2 was the major contributor at ZY, while the highest contribution at HP was from the reaction of O(1D) + H2O. The net O3 production rates increased significantly from non-O3 episode days to O3 episode days at both ZY and HP, indicating increased O3 accumulation on O3 episode days. In addition, the model simulation indicated that O3 formation was controlled by volatile organic compounds (VOCs) at ZY, whereas O3 formation was cooperative controlled by VOCs and NO at HP. Overall, these findings can provide valuable information on formulating and implementing O3 control strategies in urban and suburban areas in China.

AB - Simultaneous field measurements of ozone (O3) and its precursors were conducted at an urban site (Zi Yang, ZY) and a suburban site (Huang Pi, HP) in August 2018 in Wuhan, China. The observation results revealed that the mean levels of nitric oxide (NO), nitrogen dioxide (NO2), carbon monoxide (CO) and non-methane hydrocarbons (NMHCs) were higher at ZY than those detected at HP, while the opposite trend was observed for O3 levels. Compared to non-O3 episode days, higher levels of O3 and its precursors (i.e. NMHCs, NO and CO) were observed on O3 episode days at both ZY and HP. A chemical box model was used to investigate the O3 photochemistry on O3 episode days and non-O3 episode days at ZY and HP, and the O3 production was found to be dominated by the reaction of HO2 + NO at the two sites. In terms of O3 destruction, OH + NO2 was the major contributor at ZY, while the highest contribution at HP was from the reaction of O(1D) + H2O. The net O3 production rates increased significantly from non-O3 episode days to O3 episode days at both ZY and HP, indicating increased O3 accumulation on O3 episode days. In addition, the model simulation indicated that O3 formation was controlled by volatile organic compounds (VOCs) at ZY, whereas O3 formation was cooperative controlled by VOCs and NO at HP. Overall, these findings can provide valuable information on formulating and implementing O3 control strategies in urban and suburban areas in China.

KW - Central China

KW - Diurnal variation

KW - Ozone

KW - Photochemistry

UR - https://www.scopus.com/pages/publications/85077336726

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DO - 10.1016/j.atmosenv.2019.117236

M3 - Journal article

AN - SCOPUS:85077336726

SN - 1352-2310

VL - 223

JO - Atmospheric Environment

JF - Atmospheric Environment

M1 - 117236

ER -