Estimation of source contribution of PM2.5 at a background area in Korea
Abstract
Organic aerosols account for a large fraction (20-80 wt%) in the ambient particulate matter, especially, in PM2.5 (particulate matter less than or equal to 2.5 μm in aerodynamic diameter). PM2.5 has detrimental effects on human health as well as the environmental effects such as climate change. Thus, identification of major sources of organic aerosols in PM2.5 at a background area is necessary to understand the characteristics of the ambient air in Korea. The objectives of this study are (1) estimation and identification of sources of organic aerosols (polycyclic aromatic hydrocarbons, n-alkanes, n-alkanoic acids, dicarboxylic acids, and sugars) using the Positive Matrix Factorization (PMF) model for the data measured from Jul. 2015 to Apr. 2016 at Anmyeon island, a back ground station in Korea, and (2) comparison with the PMF modeling result at Seoul to understand the characteristics of background areas of Korea. Five sources were identified at Anmyeon island. The profiles of some factors were similar to the profiles of Seoul and the factors at both sites showed similar seasonal variation in daily contribution.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFM.A53E0341H
- Keywords:
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- 0305 Aerosols and particles;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 3355 Regional modeling;
- ATMOSPHERIC PROCESSES