Large variability of O3-precursor relationship during severe ozone polluted period in an industry-driven cluster city (Zibo) of North China Plain

Journal of Cleaner Production, Journal Year: 2021, Volume and Issue: 316, P. 128252 - 128252

Published: July 7, 2021

Language: Английский

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Attribution of surface ozone to NO_x and volatile organic compound sources during two different high ozone events

Atmospheric chemistry and physics, Journal Year: 2022, Volume and Issue: 22(17), P. 11675 - 11699

Published: Sept. 9, 2022

Abstract. Increased tropospheric ozone (O3) and high temperatures affect human health during heat waves. Here, we perform a source attribution that considers separately the formation of German surface from emitted NOx volatile organic compound (VOC) precursors two peak events took place in 2015 2018 which were associated with elevated temperatures. Results showed concentrations can be primarily attributed to nearby emissions anthropogenic (from Germany immediately neighboring countries) biogenic VOC. Outside these episodes, baseline are long-range transport, due remote methane oxidation adding background. We show significant contribution modeled O3 coming or VOC occurs mostly southern Germany, emphasizing production depends on local interplay between precursors. Shipping activities Baltic North seas have large impact predicted coastal areas, yet small amount sources also seen far inland, showing importance transported pollution levels. shown changes circulation patterns episodes observed waves different emission total O3; thus, possible influence multiple upwind regions should accounted for when mitigation strategies designed. Our study highlights good correlation ozone, although diurnal variation is not dominated by emissions, peaks disconnected peaks. This suggests sole factor influences formation, other meteorological chemical processes diel origin. Overall, this helps demonstrate method understand useful tool will help design effective strategies.

Language: Английский

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Identifying the dominant driver of elevated surface ozone concentration in North China plain during summertime 2012–2017

Environmental Pollution, Journal Year: 2022, Volume and Issue: 300, P. 118912 - 118912

Published: Jan. 28, 2022

Language: Английский

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Quantitative for photochemical loss of volatile organic compounds upon ozone formation chemistry at an industrial City (Zibo) in North China Plain

Environmental Research, Journal Year: 2024, Volume and Issue: 256, P. 119088 - 119088

Published: May 18, 2024

Language: Английский

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Composition and Reactivity of Volatile Organic Compounds and the Implications for Ozone Formation in the North China Plain

Atmosphere, Journal Year: 2024, Volume and Issue: 15(2), P. 213 - 213

Published: Feb. 9, 2024

Enhanced ozone (O3) pollution has emerged as a pressing environmental concern in China, particularly for densely populated megacities and major city clusters. However, volatile organic compounds (VOCs), the key precursors to O3 formation, have not been routinely measured. In this study, we characterize spatial temporal patterns of VOCs examine role production five cities (Dongying (DY), Rizhao (RZ), Yantai (YT), Weihai (WH), Jinan (JN)) North China Plain (NCP) two sampling periods (June December) 2021 through continuous field observations. Among various VOC categories, alkanes accounted largest proportion cities. For VOCs, chemical reactivities, aromatic hydrocarbons, alkenes were dominant contributors formation potential (OFP). Unlike inland regions, contribution OFP from OVOCs increased greatly at high concentrations coastal regions (especially YT). Model simulations during episode show that net rates 27.87, 10.24, 10.37 ppbv/h DY, RZ, JN. The pathway HO2 + NO contributed most JN while RO2 was contributor DY. relative incremental reactivity (RIR) revealed DY transitional regime, it markedly VOC-limited regime RZ. response is influenced by NOx concentration clear daily variation pattern (the sensitivity greater 15:00 17:00). efficiencies reduction could be achieved reducing when low (less than 20 ppbv study). This study reveals importance ambient over NCP demonstrates better grasp sources profiles critical in-depth regulation NCP.

Language: Английский

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Temporary reduction in VOCs associated with health risk during and after COVID-19 in Maharashtra, India

Journal of Atmospheric Chemistry, Journal Year: 2022, Volume and Issue: 80(1), P. 53 - 76

Published: Aug. 17, 2022

Language: Английский

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Persistent O3 pollution over the North China plain during the advancement of East Asian summer monsoon: Process analysis and interannual difference

Atmospheric Research, Journal Year: 2025, Volume and Issue: unknown, P. 108104 - 108104

Published: March 1, 2025

Language: Английский

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Impact of temperature on the biogenic volatile organic compound (BVOC) emissions in China: A review

Journal of Environmental Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Source-apportionment and spatial distribution analysis of VOCs and their role in ozone formation using machine learning in central-west Taiwan

Environmental Research, Journal Year: 2023, Volume and Issue: 232, P. 116329 - 116329

Published: June 3, 2023

Language: Английский

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Origin and transformation of volatile organic compounds at a regional background site in Hong Kong: Varied photochemical processes from different source regions

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 908, P. 168316 - 168316

Published: Nov. 8, 2023

Language: Английский

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