Journal
SCIENTIFIC REPORTS
Volume 8, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-018-23021-1
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Funding
- National Strategic Project-Fine Particle of the National Research Foundation of Korea (NRF) - Ministry of Science and ICT (MSIT) [2017M3D8A1092015]
- Ministry of Environment (ME) [2017M3D8A1092015]
- Ministry of Health and Welfare (MOHW) [2017M3D8A1092015]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2015R1A6A3A01061393, 2016R1D1A1B03934532]
- Korean Ministry of Environment as Climate Change Correspondence
- National Research Foundation of Korea [2016R1D1A1B03934532, 2015R1A6A3A01061393] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Black carbon (BC) and brown carbon (BrC) aerosols that are released from the combustion of fossil fuels and biomass are of great concern because of their light-absorbing ability and great abundance associated with various anthropogenic sources, particularly in East Asia. However, the optical properties of ambient aerosols are dependent on the mixing state and the chemical composition of absorbing and non-absorbing aerosols. Here we examined how, in East Asian outflows, the parameters of the aerosol optical properties can be altered seasonally in conjunction with the mixing state and the chemical composition of aerosols, using 3-year aerosol measurements. Our findings highlight the important role played by sulfate in East Asia during the warm season in both enhancing single scattering albedo (SSA) and altering the absorption properties of aerosols-enhancing mass absorption cross section of BC (MAC(BC)) and reducing MAC of BrC (MAC(BrC),(370)). Therefore we suggest that in global radiative forcing models, particular attention should be paid to the consideration of the accurate treatment of the SO2 emission changes in the coming years in this region that will result from China's air quality policy.
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