Impact of shipping emissions regulation on urban aerosol composition changes revealed by receptor and numerical modelling
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Title
- Impact of shipping emissions regulation on urban aerosol composition changes revealed by receptor and numerical modelling
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Author(s)
- Jang, Eunhwa; Choi, Seongwoo; Yoo, Eunchul; Hyun, Sang Min; An, Joon Geon
- KIOST Author(s)
- Hyun, Sang Min(현상민); An, Joon Geon(안준건)
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Alternative Author(s)
- 현상민; 안준건
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Publication Year
- 2023-05
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Abstract
- 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 Factorisation (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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ISSN
- 2397-3722
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/44296
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DOI
- 10.1038/s41612-023-00364-9
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Bibliographic Citation
- npj Climate and Atmospheric Science, v.6, no.1, 2023
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Publisher
- Nature Publishing Group
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Type
- Article
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Language
- English
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Document Type
- Article
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