气候变化领域集成服务门户(CCPortal): Variations in major aerosol components from long-term measurement of columnar aerosol optical properties at a SKYNET site downwind of Seoul, Korea

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DOI	10.1016/j.atmosenv.2020.117991
	Variations in major aerosol components from long-term measurement of columnar aerosol optical properties at a SKYNET site downwind of Seoul, Korea
	Choi Y.; Ghim Y.S.
发表日期	2021
ISSN	13522310
卷号	245
英文摘要	We investigated the variations in major aerosol components using optical properties from a SKYNET site downwind of metropolitan Seoul under prevailing westerlies. The study period was March 2007 through February 2017 during which numerous measures to reduce air pollutants were implemented in both Korea and China. Major aerosol components, including mineral dust (MD), secondary inorganic ions (SII), and carbonaceous materials were estimated from optical properties, such as fine mode volume fraction (FMVF), single scattering albedo (SSA), and the difference of absorption aerosol optical depth (dAAOD) between 400 and 870 nm. Monthly variations in aerosol characteristics estimated from the optical properties were mostly consistent with the previous studies based on in-situ measurement data. As many studies reported the reduction of particulate matter (PM) in Northeast Asia, AOD also decreased along with the reductions of MD and SII. Secondary formation during the long-range transport played an important role in elevating AOD. However, for the specific case of high FMVF, high SSA, or low dAAOD, potential source regions of aerosols tended to be distributed in the eastern Korean Peninsula and over the East Sea, as the effects of local emissions became larger than those of long-range transport. Although AOD variations successfully revealed the overall characteristics of PM on the whole, in some cases, the variations of optical properties were not clearly related to those of aerosol components. © 2020 Elsevier Ltd
英文关键词	Long-range transport; Long-term trends; Monthly variations; Potential source regions; Secondary formation
语种	英语
scopus关键词	Aerosols; Air pollution; Atmospheric movements; Aerosol characteristics; Aerosol optical depths; Aerosol optical property; Carbonaceous materials; Long-term measurements; Overall characteristics; Potential source regions; Single scattering albedo; Optical properties; aerosol; atmospheric pollution; long range transport; measurement method; metropolitan area; mineral dust; optical depth; optical property; particulate matter; spatiotemporal analysis; aerosol; air pollutant; albedo; article; China; mineral dust; optical depth; particulate matter; Sea of Japan; South Korea; China; Korea; Northeast Asia; Pacific Ocean; Sea of Japan; Seoul [South Korea]; South Korea
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152959
作者单位	Department of Environmental Science, Hankuk University of Foreign Studies, Yongin, 17035, South Korea
推荐引用方式 GB/T 7714	Choi Y.,Ghim Y.S.. Variations in major aerosol components from long-term measurement of columnar aerosol optical properties at a SKYNET site downwind of Seoul, Korea[J],2021,245.
APA	Choi Y.,&Ghim Y.S..(2021).Variations in major aerosol components from long-term measurement of columnar aerosol optical properties at a SKYNET site downwind of Seoul, Korea.Atmospheric Environment,245.
MLA	Choi Y.,et al."Variations in major aerosol components from long-term measurement of columnar aerosol optical properties at a SKYNET site downwind of Seoul, Korea".Atmospheric Environment 245(2021).