TY - JOUR
T1 - Estimation of the source contributions for carbonaceous aerosols at a background site in Korea
AU - Han, Sanghee
AU - Lee, Ji Yi
AU - Lee, Jongsik
AU - Heo, Jongbae
AU - Jung, Chang Hoon
AU - Kim, Eun Sill
AU - Kim, Yong Pyo
N1 - Funding Information:
This work was supported by Korea Meteorological Administration (CATER 2014-3190) and National Research Foundation of Korea (NRF-2017R1A2B40 06760).
Publisher Copyright:
© 2018 by Asian Journal of Atmospheric Environment.
PY - 2018
Y1 - 2018
N2 - To identify and quantify the contribution of the major sources for the ambient carbonaceous aerosols at a Global Atmosphere Watch (GAW) station in Korea, a receptor model, the Positive Matrix Factorization (PMF) model was applied for the oneyear long measurement data. Particulate matter less than or equal to 2.5 μm in aerodynamic diameter (PM2.5) aerosols were sampled at Anmyeon Island GAW station from June 2015 to May 2016 and carbonaceous species including ~80 organic compounds were analyzed. According to the performance parameter evaluation, 5 or 7 factors were considered as optimal number of factors. It was found out that the results of 7 factors gave less contribution from the factor designated as mixed sources which we could not separate clearly. The major sources with 7 factors were identified with various analyses including chemical characteristics and air parcel movement analysis. The 7 factors with their relative contributions are; anthropogenic Secondary Organic Aerosols (SOA) (14%), biogenic SOA (15%), primary biogenic source (8%), local biomass burning (13%), transported biomass burning (16%), combustion related source (15%), and mixed sources (19%). The air parcel movement analysis results also support the identification of these factors. Thus, the Anmyeon Island GAW station has been affected by both regional and local sources for the carbonaceous aerosols.
AB - To identify and quantify the contribution of the major sources for the ambient carbonaceous aerosols at a Global Atmosphere Watch (GAW) station in Korea, a receptor model, the Positive Matrix Factorization (PMF) model was applied for the oneyear long measurement data. Particulate matter less than or equal to 2.5 μm in aerodynamic diameter (PM2.5) aerosols were sampled at Anmyeon Island GAW station from June 2015 to May 2016 and carbonaceous species including ~80 organic compounds were analyzed. According to the performance parameter evaluation, 5 or 7 factors were considered as optimal number of factors. It was found out that the results of 7 factors gave less contribution from the factor designated as mixed sources which we could not separate clearly. The major sources with 7 factors were identified with various analyses including chemical characteristics and air parcel movement analysis. The 7 factors with their relative contributions are; anthropogenic Secondary Organic Aerosols (SOA) (14%), biogenic SOA (15%), primary biogenic source (8%), local biomass burning (13%), transported biomass burning (16%), combustion related source (15%), and mixed sources (19%). The air parcel movement analysis results also support the identification of these factors. Thus, the Anmyeon Island GAW station has been affected by both regional and local sources for the carbonaceous aerosols.
KW - Anmyeon Island
KW - Carbonaceous aerosol
KW - Global Atmosphere Watch station
KW - Positive Matrix Factorization
KW - Source apportionment
UR - http://www.scopus.com/inward/record.url?scp=85062056328&partnerID=8YFLogxK
U2 - 10.5572/AJAE.2018.12.4.311
DO - 10.5572/AJAE.2018.12.4.311
M3 - Article
AN - SCOPUS:85062056328
SN - 1976-6912
VL - 12
SP - 311
EP - 325
JO - Asian Journal of Atmospheric Environment
JF - Asian Journal of Atmospheric Environment
IS - 4
ER -