Sources, species and secondary formation of atmospheric aerosols and gaseous precursors in the suburb of Kitakyushu, Japan

Xi, Zhang; Murakami, Takuya; Wang, Jinhe; Aikawa, Masahide

doi:10.1016/j.scitotenv.2020.143001

Cited by 33 publications

(7 citation statements)

References 64 publications

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“…1c, it can be seen that the concentrations of most major chemical components of PM 2.5 , estimated using the mass reconstruction method 34 Meanwhile, a slightly enhanced contribution of ammonium sulphate to PM 2.5 seen in 2020 was associated with 5-day acute air pollution events in August arising from the long-range transport of air masses containing volcanic ash that had erupted in the Kobe area in Japan. It was reported that elevated volcanic SO 2 emissions could result in formation of signi cant quantities of sulphate aerosols during travel 35,36 .…”

Section: Trends Of Pm Precursors and Major Pm 25 Chemical Componentsmentioning

confidence: 99%

Impact of shipping emissions regulation: Urban aerosol composition changes revealed by receptor and numerical modelling

Jang

Choi

Yoo

et al. 2023

Preprint

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Various shipping emissions controls have recently been implemented at both local and national scales. However, it is difficult to track the effect of these on PM2.5 levels, owing to the non-linear relationship that exists between changes in precursor emissions and PM components. Positive Matrix Factorization (PMF) identifies that a switch to cleaner fuels since January 2020 results in considerable reductions in shipping-source-related PM2.5, especially sulphate aerosols and metals (V and Ni), not only at a port site but also at an urban background site. CMAQ sensitivity analysis reveals that the reduction of secondary inorganic aerosols (SIA) further extends to inland areas downwind from ports. In addition, mitigation of secondary organic aerosols (SOA) in coastal urban areas can be anticipated either from the results of receptor modelling or from CMAQ simulations. The results in this study show the possibility of obtaining human health benefits in coastal cities through shipping emission controls.

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Section: Trends Of Pm Precursors and Major Pm 25 Chemical Componentsmentioning

confidence: 99%

Impact of shipping emissions regulation: Urban aerosol composition changes revealed by receptor and numerical modelling

Jang

Choi

Yoo

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Meanwhile, a slightly enhanced contribution of ammonium sulphate to PM 2.5 seen in 2020 was associated with 5-day acute air pollution events in August arising from the long-range transport of air masses containing volcanic ash that had erupted in the Kobe area in Japan. It was reported that elevated volcanic SO 2 emissions could result in formation of signi cant quantities of sulphate aerosols during travel 37,38 .…”

Section: Trends Of Gas-phase Pm Precursors and Major Pm 25 Chemical C...mentioning

confidence: 99%

Impact of shipping emission reductions on the chemical composition of aerosols in coastal urban air revealed by receptor modelling and numerical simulations

Jang

Choi

Yoo

et al. 2022

Preprint

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Concerns regarding PM2.5 attributable to the shipping sector, have been highlighted in coastal urban regions due to the well-recognized adverse effects on human health. A number of pollution control strategies have recently been adopted to reduce shipping emissions on both the local and national scales. However, it is difficult to track the effect of these on PM2.5 levels, owing to the non-linear relationship that exists between changes in precursor emissions and PM components. In the present study, an integrated analysis was conducted from various angles with a particular focus on the chemical composition of PM2.5 in the port city of Busan, arising from abatement policies for shipping emissions. Positive Matrix Factorization (PMF) identified that a switch to lower sulphur (S) fuels (from 3.5% to 0.1–0.5%) since January 2020 resulted in considerable annual reductions in shipping-source related surface PM2.5 mass, especially sulphate aerosols. This was seen at a port site (88.9%) as well as at an interior urban background site (81.3%). CMAQ sensitivity analysis showed that the reduction of secondary inorganic aerosols (SIA) further extended to inland areas downwind from ports. In addition, mitigation of secondary organic aerosols (SOA) in coastal urban areas through shipping emission controls, could be anticipated either from the results of receptor modelling applied to two extensive datasets (particulate, gaseous), or from CMAQ simulation results.

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“…Major water-soluble ions in PM2.5 including SO4 2-, NO3 -, and NH4 + were mainly derived from secondary formation rather than the direct emission (Feng et al, 2020a;Zhang et al, 2020a), and thus they were not very sensitive to WD.…”

Section: The Role Of Meteorology On Air Qualitymentioning

confidence: 99%

Comment on acp-2020-1199

2021

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Sources, species and secondary formation of atmospheric aerosols and gaseous precursors in the suburb of Kitakyushu, Japan

Cited by 33 publications

References 64 publications

Impact of shipping emissions regulation: Urban aerosol composition changes revealed by receptor and numerical modelling

Impact of shipping emissions regulation: Urban aerosol composition changes revealed by receptor and numerical modelling

Impact of shipping emission reductions on the chemical composition of aerosols in coastal urban air revealed by receptor modelling and numerical simulations

Comment on acp-2020-1199

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