Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-16121-2018 |
Effects of meteorology and emissions on urban air quality: a quantitative statistical approach to long-term records (1999-2016) in Seoul, South Korea | |
Seo, Jihoon1,2; Park, Doo-Sun R.3; Kim, Jin Young1; Youn, Daeok4; Lim, Yong Bin1; Kim, Yumi5 | |
2018-11-09 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:21页码:16121-16137 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | Together with emissions of air pollutants and precursors, meteorological conditions play important roles in local air quality through accumulation or ventilation, regional transport, and atmospheric chemistry. In this study, we extensively investigated multi-timescale meteorological effects on the urban air pollution using the long-term measurements data of PM10, SO2, NO2, CO, and O-3 and meteorological variables over the period of 1999-2016 in Seoul, South Korea. The long-term air quality data were decomposed into trend-free short-term components and long-term trends by the Kolmogorov-Zurbenko filter, and the effects of meteorology and emissions were quantitatively isolated using a multiple linear regression with meteorological variables. In terms of short-term variability, intercorrelations among the pollutants and meteorological variables and composite analysis of synoptic meteorological fields exhibited that the warm and stagnant conditions in the migratory high-pressure system are related to the high PM10 and primary pollutant, while the strong irradiance and low NO2 by high winds at the rear of a cyclone are related to the high O-3. In terms of long-term trends, decrease in PM10 (-1.75 mu g m(-3) yr(-1)) and increase in O-3 (+0.88 ppb yr(-1)) in Seoul were largely contributed by the meteorology-related trends (-0.94 mu g m(-3) yr(-1) for PM10 and +0.47 ppb yr(-1) for O-3), which were attributable to the subregional-scale wind speed increase. Comparisons with estimated local emissions and socioeconomic indices like gross domestic product (GDP) growth and fuel consumptions indicate probable influences of the 2008 global economic recession as well as the enforced regulations from the mid-2000s on the emission-related trends of PM10 and other primary pollutants. Change rates of local emissions and the transport term of long-term components calculated by the tracer continuity equation revealed a decrease in contributions of local emissions to the primary pollutants including PM10 and an increase in contributions of local secondary productions to O-3. The present results not only reveal an important role of synoptic meteorological conditions on the episodic air pollution events but also give insights into the practical effects of environmental policies and regulations on the long-term air pollution trends. As a complementary approach to the chemical transport modeling, this study will provide a scientific background for developing and improving effective air quality management strategy in Seoul and its metropolitan area. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449653900001 |
WOS关键词 | SURFACE OZONE ; PARTICULATE POLLUTION ; PM2.5 CONCENTRATIONS ; SIGNIFICANT INCREASE ; CLIMATE-CHANGE ; UNITED-STATES ; TRENDS ; HAZE ; SECONDARY ; ASIA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29521 |
专题 | 地球科学 |
作者单位 | 1.Korea Inst Sci & Technol, Green City Technol Inst, Seoul 02792, South Korea; 2.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 08826, South Korea; 3.Chosun Univ, Dept Earth Sci, Gwangju 61452, South Korea; 4.Chungbuk Natl Univ, Dept Earth Sci Educ, Cheongju 28644, South Korea; 5.Korea Environm Inst, Div Resource & Energy Assessment, Sejong 30147, South Korea |
推荐引用方式 GB/T 7714 | Seo, Jihoon,Park, Doo-Sun R.,Kim, Jin Young,et al. Effects of meteorology and emissions on urban air quality: a quantitative statistical approach to long-term records (1999-2016) in Seoul, South Korea[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(21):16121-16137. |
APA | Seo, Jihoon,Park, Doo-Sun R.,Kim, Jin Young,Youn, Daeok,Lim, Yong Bin,&Kim, Yumi.(2018).Effects of meteorology and emissions on urban air quality: a quantitative statistical approach to long-term records (1999-2016) in Seoul, South Korea.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(21),16121-16137. |
MLA | Seo, Jihoon,et al."Effects of meteorology and emissions on urban air quality: a quantitative statistical approach to long-term records (1999-2016) in Seoul, South Korea".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.21(2018):16121-16137. |
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