Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.startPage | 163524 | - |
dc.citation.title | SCIENCE OF THE TOTAL ENVIRONMENT | - |
dc.citation.volume | 881 | - |
dc.contributor.author | Cha, Yesol | - |
dc.contributor.author | Song, Chang-Keun | - |
dc.contributor.author | Jeon, Kwon-ho | - |
dc.contributor.author | Yi, Seung-Muk | - |
dc.date.accessioned | 2023-12-21T11:54:34Z | - |
dc.date.available | 2023-12-21T11:54:34Z | - |
dc.date.created | 2023-04-19 | - |
dc.date.issued | 2023-07 | - |
dc.description.abstract | This study used observational data and a chemical transport model to investigate the contributions of several factors to the recent change in air quality in China and South Korea from 2016 to 2020. We focused on observational data analysis, which could reflect the annual trend of emission reduction and adjust existing emission amounts to apply it into a chemical transport model. The observation data showed that the particulate matter (PM2.5) concentrations during winter 2020 decreased by −23.4 % (−14.68 μg/m3) and − 19.5 % (−5.73 μg/m3) in China and South Korea respectively, compared with that during winter 2016. Meteorological changes, the existing national plan for a long-term emission reduction target, and unexpected events (i.e., Coronavirus disease 2019 (COVID-19) in China and South Korea and the newly introduced special winter countermeasures in South Korea from 2020) are considered major factors that may affect the recent change in air quality. The impact of different meteorological conditions on PM2.5 concentrations was assessed by conducting model simulations by fixing the emission amounts; the results indicated changes of +7.6 % (+4.77 μg/m3) and + 9.7 % (+2.87 μg/m3) in China and South Korea, respectively, during winter 2020 compared to that during winter 2016. Due to the existing and pre-defined long-term emission control policies implemented in both countries, PM2.5 concentration significantly decreased from winter 2016–2020 in China (−26.0 %; −16.32 μg/m3) and South Korea (−9.1 %; −2.69 μg/m3). The unexpected COVID-19 outbreak caused the PM2.5 concentrations in China to decrease during winter 2020 by another −5.0 % (−3.13 μg/m3). In South Korea, the winter season special reduction policy, which was introduced and implemented in winter 2020, and the COVID-19 pandemic may have contributed to −19.5 % (−5.92 μg/m3) decrease in PM2.5 concentrations. | - |
dc.identifier.bibliographicCitation | SCIENCE OF THE TOTAL ENVIRONMENT, v.881, pp.163524 | - |
dc.identifier.doi | 10.1016/j.scitotenv.2023.163524 | - |
dc.identifier.issn | 0048-9697 | - |
dc.identifier.scopusid | 2-s2.0-85152895560 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/63995 | - |
dc.identifier.wosid | 000986062100001 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Factors affecting recent PM2.5 concentrations in China and South Korea from 2016 to 2020 | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Particulate matter | - |
dc.subject.keywordAuthor | Emission control policy | - |
dc.subject.keywordAuthor | Meteorology | - |
dc.subject.keywordAuthor | COVID-19 | - |
dc.subject.keywordPlus | LONG-RANGE TRANSPORT | - |
dc.subject.keywordPlus | URBAN AIR-QUALITY | - |
dc.subject.keywordPlus | PARTICULATE MATTER | - |
dc.subject.keywordPlus | EMISSION INVENTORY | - |
dc.subject.keywordPlus | POLLUTION | - |
dc.subject.keywordPlus | SEOUL | - |
dc.subject.keywordPlus | METEOROLOGY | - |
dc.subject.keywordPlus | POLLUTANTS | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | UNCERTAINTY | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.