2020
DOI: 10.5194/acp-20-14361-2020
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A measurement and model study on ozone characteristics in marine air at a remote island station and its interaction with urban ozone air quality in Shanghai, China

Abstract: Abstract. To understand the characteristics and changes of baseline ozone (O3) in oceanic air in eastern China, a 6-year measurement of O3 concentration was conducted from 1 January 2012 to 15 September 2017 at a remote offshore station located on Sheshan Island (SSI) near the megacity of Shanghai. The observed monthly mean O3 concentrations at SSI ranged from 33.4 to 61.4 ppbv during the study period, which were about 80 % and 12 % higher, respectively, than those measured at downtown and rural sites in Shang… Show more

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Cited by 7 publications
(3 citation statements)
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“…Thus, tracing the response of O 3 pollution to emission changes is of extraordinary importance for designing effective environmental policies. Approaches to identify which emissions contribute most to O 3 are mostly based on chemical transport models (CTMs), which either tag precursor emissions from particular source categories or regions [8,9], perturb certain emissions to quantify their contributions [10][11][12], or employ instrumented versions of the CTM to calculate first or second order O 3 sensitivities [13]. Such methods have been applied to investigate the response of O 3 -related health impacts to emission changes in previous studies [14].…”
Section: Introductionmentioning
confidence: 99%
“…Thus, tracing the response of O 3 pollution to emission changes is of extraordinary importance for designing effective environmental policies. Approaches to identify which emissions contribute most to O 3 are mostly based on chemical transport models (CTMs), which either tag precursor emissions from particular source categories or regions [8,9], perturb certain emissions to quantify their contributions [10][11][12], or employ instrumented versions of the CTM to calculate first or second order O 3 sensitivities [13]. Such methods have been applied to investigate the response of O 3 -related health impacts to emission changes in previous studies [14].…”
Section: Introductionmentioning
confidence: 99%
“…It is generally recognized that volatile organic compounds (VOCs) and nitrogen oxides (NO X ) are the two dominant precursors [ 4 ]. However, the secondary photochemical conversion of VOCs and NO X are nonlinear and influenced by several spatial-temporal heterogeneity factors [ 1 , 5 ], as well as complex affection from meteorological factors [ 6 , 7 ]. Consequently, the underlying mechanisms governing O 3 pollution remain unclear.…”
Section: Introductionmentioning
confidence: 99%
“…Thus, the increase in water vapor can lead to a decrease in surface ozone concentrations (Camalier et al, 2007;He et al, 2017).Pollutant distributions are strongly affected by the wind field (Chen et al, 2020). PM 2.5 concentrations typically decrease by an order of magnitude between polluted regions and the diluting background air, whereas for ozone concentrations may actually increase or decrease, affected by upwind regions (Jacob and Winner, 2009;Gu et al, 2020b). Precipitation decreases both PM 2.5 and O 3 concentrations via wet removal (Shan et al, 2008).…”
Section: Introductionmentioning
confidence: 99%