Impact of macroeconomic factors on ozone precursor emissions in China

Pei, Ziming; Chen, Xuwu; Li, Xiaodong; Liang, Jie; Lin, Anqi; Li, Shuai; Yang, Suhang; Bin, Juan; Dai, Simin

doi:10.1016/j.jclepro.2022.130974

Cited by 13 publications

(5 citation statements)

References 48 publications

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“…Since February 2020, China started a series of outbreak controls, including strict closure of public transport systems, restrictions on daily travel, and avoidance of mass gatherings. As a result, sharply reduced activities in transportation and industrial production brought down the emissions of various types of pollution in numerous Chinese cities and improving the quality of the atmosphere to a large extent ( Bao & Zhang, 2020 ; Pei et al, 2022 ; Wang, Y. et al, 2020 ). This natural alteration gave researchers a good time to investigate the effects of reduced human emissions on atmospheric quality.…”

Section: Introductionmentioning

confidence: 99%

Response of PM2.5 pollution to meteorological and anthropogenic emissions changes during COVID-19 lockdown in Hunan Province based on WRF-Chem model

Dai,

Chen,

Liang

et al. 2023

Environmental Pollution

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Section: Introductionmentioning

confidence: 99%

Response of PM2.5 pollution to meteorological and anthropogenic emissions changes during COVID-19 lockdown in Hunan Province based on WRF-Chem model

Dai,

Chen,

Liang

et al. 2023

Environmental Pollution

Self Cite

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“…Accordingly, the regional strategy for controlling ozone pollution produced by road transportation should focus on large-scale and comprehensive control of VOC emission, different from that for the industrial source. Source determination and decomposition at a macro-level would help further understand the driver contribution to ozone production from the socioeconomic sectors, which might be a suitable extension of our case study (Pei et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Investigating the Heterogeneity of NOx-VOCs-Ozone Relationships in Chinese Cities: Systematic Assessment and Spatiotemporal Maps

Guan,

Xiao,

et al. 2023

Preprint

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Ozone is a pollutant threatening the atmospheric environment and public health. Investigating the relationship and sensitivity between ozone level and its precursors, including nitrogen oxides (NOx) and volatile organic compounds (VOC), has been a significant basis and reference for pollution mitigation. Through mining the internal comparability between individual data and the entire dataset, this study develops indexes assessing the ozone-NOx-VOC relationship while performing a case study on Chinese cities from 2015 to 2020. From the results, (1) the ozone-precursor correlation in Chinese cities generally showed increase-decrease trends in the assessing period while significantly correlating cities aggregating in two eastern city groups. (2) Differentiation in NOx- and VOC-limited ozone production regimes between cities located on the left and right sides of the Hu Huanyong Line has gradually formed over the past several years. (3) To effectively and efficiently mitigate ozone pollution, reducing NOx emission on a large scale while preventing VOC emission in key urban agglomerations with relatively developed economies and aggregated populations is recommended. The ozone-NOx-VOC relationship is assessed based on the quantitative and individual evaluation of ozone-NOx and ozone-VOC correlation, providing a novel local-to-global perspective to understand the contribution of precursors to ozone pollution.

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“…In particular, total OSs contributed to 1.2 ± 0.8 % of OM in summer 2015 and 1.1 ± 0.8 % of OM in summer 2019 in urban Shanghai (Wang et al, 2021). Thus, although anthropogenic emission reduction has been vigorously promoted by the local government in recent years (Guo et al, 2022;Pei et al, 2022), the contribution of SOA to OM in Shanghai has not decreased significantly (Wang et al, 2021).…”

Section: Molecular Compositions and Concentrations Of Ossmentioning

confidence: 98%

Spatial and diurnal variations of aerosol organosulfates in summertime Shanghai, China: potential influence of photochemical processes and anthropogenic sulfate pollution

Yang,

Xu,

et al. 2023

Atmos. Chem. Phys.

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Abstract. Organosulfates (OSs) are ubiquitous aerosol components, which has seen intense research over years. However, spatial and diurnal variations in OS formation in polluted atmospheres remain poorly understood. In this study, 130 OS species were quantified (or semi-quantified) in ambient fine particulate matter (PM2.5) collected in urban and suburban Shanghai (East China) in the summer of 2021. Isoprene- and monoterpene-derived OSs were dominant OS groups (averaging 51 % and 19 % of total quantified OSs, respectively), likely indicating a large biogenic contribution to OS formation in summer. Most OSs peaked during daytime, while monoterpene-derived nitrooxy-OSs (NOSm) increased during nighttime. Accordingly, OSs were largely produced via daytime formation processes, rather than nighttime chemistry, except for NOSm. Additionally, although OS formation in the urban and suburban areas exhibited similar diurnal variations, the average concentrations of biogenic and anthropogenic OSs decreased significantly from the urban site to the suburban site. Furthermore, we concretized daytime OS formation based on the interactions among OSs, ultraviolet (UV), ozone (O3), and sulfate (SO42-). Indeed, the concentrations of most OSs were significantly correlated with the values of UV[O3][SO42-] during daytime in both urban and suburban Shanghai. In particular, the correlation between major OSs and UV[O3][SO42-] was stronger than the correlation of major OSs with O3 and SO42-; moreover, there was no significant correlation between major OSs and UV. Thus, higher urban OS events were attributed to the enhanced photochemical processes and sulfate level in the urban area. Overall, this study provides field evidence for the influence of photochemical processes and anthropogenic sulfate on OS formation and has important implications for the mitigation of organic particulate pollution.

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Impact of macroeconomic factors on ozone precursor emissions in China

Cited by 13 publications

References 48 publications

Response of PM2.5 pollution to meteorological and anthropogenic emissions changes during COVID-19 lockdown in Hunan Province based on WRF-Chem model

Response of PM2.5 pollution to meteorological and anthropogenic emissions changes during COVID-19 lockdown in Hunan Province based on WRF-Chem model

Investigating the Heterogeneity of NOx-VOCs-Ozone Relationships in Chinese Cities: Systematic Assessment and Spatiotemporal Maps

Spatial and diurnal variations of aerosol organosulfates in summertime Shanghai, China: potential influence of photochemical processes and anthropogenic sulfate pollution

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