Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea

Abstract Recent changes of surface particulate matter (PM) concentration in the Seoul Metropolitan Area (SMA), South Korea, are puzzling. The long-term trend of surface PM concentration in the SMA declined in the 2000s, but since 2012 its concentrations have tended to incline, which is coincident wi...

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Autores principales: Hyun Cheol Kim, Soontae Kim, Byeong-Uk Kim, Chun-Sil Jin, Songyou Hong, Rokjin Park, Seok-Woo Son, Changhan Bae, MinAh Bae, Chang-Keun Song, Ariel Stein
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Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/205509405b124b28b4f94cf15c124f71
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spelling oai:doaj.org-article:205509405b124b28b4f94cf15c124f712021-12-02T15:05:21ZRecent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea10.1038/s41598-017-05092-82045-2322https://doaj.org/article/205509405b124b28b4f94cf15c124f712017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05092-8https://doaj.org/toc/2045-2322Abstract Recent changes of surface particulate matter (PM) concentration in the Seoul Metropolitan Area (SMA), South Korea, are puzzling. The long-term trend of surface PM concentration in the SMA declined in the 2000s, but since 2012 its concentrations have tended to incline, which is coincident with frequent severe hazes in South Korea. This increase puts the Korean government’s emission reduction efforts in jeopardy. This study reports that interannual variation of surface PM concentration in South Korea is closely linked with the interannual variations of wind speed. A 12-year (2004–2015) regional air quality simulation was conducted over East Asia (27-km) and over South Korea (9-km) to assess the impact of meteorology under constant anthropogenic emissions. Simulated PM concentrations show a strong negative correlation (i.e. R = −0.86) with regional wind speed, implying that reduced regional ventilation is likely associated with more stagnant conditions that cause severe pollutant episodes in South Korea. We conclude that the current PM concentration trend in South Korea is a combination of long-term decline by emission control efforts and short-term fluctuation of regional wind speed interannual variability. When the meteorology-driven variations are removed, PM concentrations in South Korea have declined continuously even after 2012.Hyun Cheol KimSoontae KimByeong-Uk KimChun-Sil JinSongyou HongRokjin ParkSeok-Woo SonChanghan BaeMinAh BaeChang-Keun SongAriel SteinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Hyun Cheol Kim
Soontae Kim
Byeong-Uk Kim
Chun-Sil Jin
Songyou Hong
Rokjin Park
Seok-Woo Son
Changhan Bae
MinAh Bae
Chang-Keun Song
Ariel Stein
Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea
description Abstract Recent changes of surface particulate matter (PM) concentration in the Seoul Metropolitan Area (SMA), South Korea, are puzzling. The long-term trend of surface PM concentration in the SMA declined in the 2000s, but since 2012 its concentrations have tended to incline, which is coincident with frequent severe hazes in South Korea. This increase puts the Korean government’s emission reduction efforts in jeopardy. This study reports that interannual variation of surface PM concentration in South Korea is closely linked with the interannual variations of wind speed. A 12-year (2004–2015) regional air quality simulation was conducted over East Asia (27-km) and over South Korea (9-km) to assess the impact of meteorology under constant anthropogenic emissions. Simulated PM concentrations show a strong negative correlation (i.e. R = −0.86) with regional wind speed, implying that reduced regional ventilation is likely associated with more stagnant conditions that cause severe pollutant episodes in South Korea. We conclude that the current PM concentration trend in South Korea is a combination of long-term decline by emission control efforts and short-term fluctuation of regional wind speed interannual variability. When the meteorology-driven variations are removed, PM concentrations in South Korea have declined continuously even after 2012.
format article
author Hyun Cheol Kim
Soontae Kim
Byeong-Uk Kim
Chun-Sil Jin
Songyou Hong
Rokjin Park
Seok-Woo Son
Changhan Bae
MinAh Bae
Chang-Keun Song
Ariel Stein
author_facet Hyun Cheol Kim
Soontae Kim
Byeong-Uk Kim
Chun-Sil Jin
Songyou Hong
Rokjin Park
Seok-Woo Son
Changhan Bae
MinAh Bae
Chang-Keun Song
Ariel Stein
author_sort Hyun Cheol Kim
title Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea
title_short Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea
title_full Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea
title_fullStr Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea
title_full_unstemmed Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea
title_sort recent increase of surface particulate matter concentrations in the seoul metropolitan area, korea
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/205509405b124b28b4f94cf15c124f71
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