The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia

Abstract In January 2020, anthropogenic emissions in Northeast Asia reduced due to the COVID-19 outbreak. When outdoor activities of the public were limited, PM2.5 concentrations in China and South Korea between February and March 2020 reduced by − 16.8 μg/m3 and − 9.9 μg/m3 respectively, compared w...

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Autores principales:	Yoon-Hee Kang, Seunghee You, Minah Bae, Eunhye Kim, Kyuwon Son, Changhan Bae, Yoonha Kim, Byeong-Uk Kim, Hyun Cheol Kim, Soontae Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/31c1738408664d15adb1fb131facbf0e
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spelling	oai:doaj.org-article:31c1738408664d15adb1fb131facbf0e2021-12-02T13:58:11ZThe impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia10.1038/s41598-020-79088-22045-2322https://doaj.org/article/31c1738408664d15adb1fb131facbf0e2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79088-2https://doaj.org/toc/2045-2322Abstract In January 2020, anthropogenic emissions in Northeast Asia reduced due to the COVID-19 outbreak. When outdoor activities of the public were limited, PM2.5 concentrations in China and South Korea between February and March 2020 reduced by − 16.8 μg/m3 and − 9.9 μg/m3 respectively, compared with the average over the previous three years. This study uses air quality modeling and observations over the past four years to separate the influence of reductions in anthropogenic emissions from meteorological changes and emission control policies on this PM2.5 concentration change. Here, we show that the impacts of anthropogenic pollution reduction on PM2.5 were found to be approximately − 16% in China and − 21% in South Korea, while those of meteorology and emission policies were − 7% and − 8% in China, and − 5% and − 4% in South Korea, respectively. These results show that the influence on PM2.5 concentration differs across time and region and according to meteorological conditions and emission control policies. Finally, the influence of reductions in anthropogenic emissions was greater than that of meteorological conditions and emission policies during COVID-19 period.Yoon-Hee KangSeunghee YouMinah BaeEunhye KimKyuwon SonChanghan BaeYoonha KimByeong-Uk KimHyun Cheol KimSoontae KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yoon-Hee Kang Seunghee You Minah Bae Eunhye Kim Kyuwon Son Changhan Bae Yoonha Kim Byeong-Uk Kim Hyun Cheol Kim Soontae Kim The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia
description	Abstract In January 2020, anthropogenic emissions in Northeast Asia reduced due to the COVID-19 outbreak. When outdoor activities of the public were limited, PM2.5 concentrations in China and South Korea between February and March 2020 reduced by − 16.8 μg/m3 and − 9.9 μg/m3 respectively, compared with the average over the previous three years. This study uses air quality modeling and observations over the past four years to separate the influence of reductions in anthropogenic emissions from meteorological changes and emission control policies on this PM2.5 concentration change. Here, we show that the impacts of anthropogenic pollution reduction on PM2.5 were found to be approximately − 16% in China and − 21% in South Korea, while those of meteorology and emission policies were − 7% and − 8% in China, and − 5% and − 4% in South Korea, respectively. These results show that the influence on PM2.5 concentration differs across time and region and according to meteorological conditions and emission control policies. Finally, the influence of reductions in anthropogenic emissions was greater than that of meteorological conditions and emission policies during COVID-19 period.
format	article
author	Yoon-Hee Kang Seunghee You Minah Bae Eunhye Kim Kyuwon Son Changhan Bae Yoonha Kim Byeong-Uk Kim Hyun Cheol Kim Soontae Kim
author_facet	Yoon-Hee Kang Seunghee You Minah Bae Eunhye Kim Kyuwon Son Changhan Bae Yoonha Kim Byeong-Uk Kim Hyun Cheol Kim Soontae Kim
author_sort	Yoon-Hee Kang
title	The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia
title_short	The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia
title_full	The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia
title_fullStr	The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia
title_full_unstemmed	The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia
title_sort	impacts of covid-19, meteorology, and emission control policies on pm2.5 drops in northeast asia
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/31c1738408664d15adb1fb131facbf0e
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The impacts of COVID-19, meteorology, and emission control policies on PM2.5 drops in Northeast Asia

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