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송창근

Song, Chang-Keun
Air Quality Impact Assessment Research Lab.
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dc.citation.number 4 -
dc.citation.startPage 331 -
dc.citation.title ATMOSPHERE -
dc.citation.volume 11 -
dc.contributor.author Yang, Geum-Hee -
dc.contributor.author Jo, Yu-Jin -
dc.contributor.author Lee, Hyo-Jung -
dc.contributor.author Song, Chang-Keun -
dc.contributor.author Kim, Cheol-Hee -
dc.date.accessioned 2023-12-21T17:42:17Z -
dc.date.available 2023-12-21T17:42:17Z -
dc.date.created 2020-05-06 -
dc.date.issued 2020-04 -
dc.description.abstract A record-breaking severe heat wave was recorded in southeast Korea from 11 July to 15 August 2018, and the numerical sensitivity simulations of volatile organic compound (VOC) to secondarily generated particulate matter with diameter of less than 2.5 mu m (PM2.5) concentrations were studied in the Busan and Ulsan metropolitan areas in southeast Korea. A weather research and forecasting (WRF) model coupled with chemistry (WRF-Chem) was employed, and we carried out VOC emission sensitivity simulations to investigate variations in PM2.5 concentrations during the heat wave period that occurred from 11 July to 15 August 2018. In our study, when anthropogenic VOC emissions from the Comprehensive Regional Emissions Inventory for Atmospheric Transport Experiment-2015 (CREATE-2015) inventory were increased by approximately a factor of five in southeast Korea, a better agreement with observations of PM2.5 mass concentrations was simulated, implying an underestimation of anthropogenic VOC emissions over southeast Korea. The simulated secondary organic aerosol (SOA) fraction, in particular, showed greater dominance during high temperature periods such as 19-21 July, 2018, with the SOA fractions of 42.3% (in Busan) and 34.3% (in Ulsan) among a sub-total of seven inorganic and organic components. This is considerably higher than observed annual mean organic carbon (OC) fraction (28.4 +/- 4%) among seven components, indicating the enhancement of secondary organic aerosols induced by photochemical reactions during the heat wave period in both metropolitan areas. The PM2.5 to PM10 ratios were 0.69 and 0.74, on average, during the study period in the two cities. These were also significantly higher than the typical range in those cities, which was 0.5-0.6 in 2018. Our simulations implied that extremely high temperatures with no precipitation are significantly important to the secondary generation of PM2.5 with higher secondary organic aerosol fraction via photochemical reactions in southeastern Korean cities. Other possible relationships between anthropogenic VOC emissions and temperature during the heat wave episode are also discussed in this study. -
dc.identifier.bibliographicCitation ATMOSPHERE, v.11, no.4, pp.331 -
dc.identifier.doi 10.3390/atmos11040331 -
dc.identifier.issn 2073-4433 -
dc.identifier.scopusid 2-s2.0-85084703932 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/32032 -
dc.identifier.url https://www.mdpi.com/2073-4433/11/4/331 -
dc.identifier.wosid 000539492200018 -
dc.language 영어 -
dc.publisher MDPI -
dc.title Numerical Sensitivity Tests of Volatile Organic Compounds Emission to PM2.5 Formation during Heat Wave Period in 2018 in Two Southeast Korean Cities -
dc.type Article -
dc.description.isOpenAccess TRUE -
dc.relation.journalWebOfScienceCategory Meteorology & Atmospheric Sciences -
dc.relation.journalResearchArea Meteorology & Atmospheric Sciences -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor heat wave -
dc.subject.keywordAuthor PM2.5 -
dc.subject.keywordAuthor secondary organic aerosol -
dc.subject.keywordAuthor Busan metropolitan area -
dc.subject.keywordAuthor Ulsan metropolitan area -
dc.subject.keywordPlus LONG-RANGE TRANSPORT -
dc.subject.keywordPlus SEOUL METROPOLITAN-AREA -
dc.subject.keywordPlus AEROSOL FORMATION -
dc.subject.keywordPlus TEMPERATURE-DEPENDENCE -
dc.subject.keywordPlus PHOTOCHEMICAL MODEL -
dc.subject.keywordPlus OZONE CONCENTRATION -
dc.subject.keywordPlus RATE VARIABILITY -
dc.subject.keywordPlus NOX -
dc.subject.keywordPlus VOC -
dc.subject.keywordPlus CHEMISTRY -

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