Estimation of Source-Based Aerosol Optical Properties for Polydisperse Aerosols from Receptor Models
Source abstract
Abstract
We estimated source-based aerosol optical properties for polydisperse aerosols according to a chemical-species-resolved mass contribution method based on source apportionment. We investigated the sensitivity of aerosol optical properties based on PM2.5 (particulate matter that have a diameter of less than 2.5 micrometers) monitoring results. These aerosols were composed of ions, metals, elemental carbon, and water-soluble organic carbon which includes humic-like carbon substances and water-soluble organic carbon. We calculated aerosols’ extinction coefficients based on the PM2.5 composition data and the results of a multivariate receptor model (Solver for Mixture Problem model, SMP). Based on the mass concentration of chemical composition and nine sources calculated with the SMP receptor model, we estimated the size-resolved mass extinction efficiencies for each aerosol source using a multilinear regression model. Consequently, this study quantitatively determined the size resolved sources contributing to the apportionment-based aerosol optical properties and calculated their respective contributions. The results show that source-resolved mass concentrations and extinction coefficients had varying contributions. This discrepancy between the source-based mass concentration and extinction coefficient was mainly due to differences between the source-dependent aerosol size distribution and the aerosol optical properties from different sources.
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Research context
OpenAlex topics: Atmospheric chemistry and aerosols · Atmospheric aerosols and clouds · Atmospheric Ozone and Climate
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Health Management, Kyungin Women’s University, 101 Gesan-gil, Gyeyang-gu, Incheon 21041, Korea
Department of Environmental Science and Engineering, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul 03760, Korea
Department of Atmospheric Sciences, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Korea
Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, USA
Korea Polar Research Institute, 26, Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea
Department of Chemical Engineering and Material Science, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul 03760, Korea
Funding
National Research Foundation of Korea
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