Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013

Abstract Carbonaceous aerosols were characterized in 19 Chinese cities during winter and summer of 2013. Measurements of organic carbon (OC) and elemental carbon (EC) levels were compared with those from 14 corresponding cities sampled in 2003 to evaluate effects of emission changes over a decade. A...

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Autores principales:	Yan Cheng, Judith C. Chow, John G. Watson, Jiamao Zhou, Suixin Liu, Junji Cao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/04b7e1afe468487096b4ee606f65b91e
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spelling	oai:doaj.org-article:04b7e1afe468487096b4ee606f65b91e2021-12-02T13:20:12ZDecreasing concentrations of carbonaceous aerosols in China from 2003 to 201310.1038/s41598-021-84429-w2045-2322https://doaj.org/article/04b7e1afe468487096b4ee606f65b91e2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84429-whttps://doaj.org/toc/2045-2322Abstract Carbonaceous aerosols were characterized in 19 Chinese cities during winter and summer of 2013. Measurements of organic carbon (OC) and elemental carbon (EC) levels were compared with those from 14 corresponding cities sampled in 2003 to evaluate effects of emission changes over a decade. Average winter and summer OC and EC decreased by 32% and 17%, respectively, from 2003 to 2013, corresponding to nationwide emission control policies implemented since 2006. The extent of carbon reduction varied by season and by location. Larger reductions were found for secondary organic carbon (SOC, 49%) than primary organic carbon (POC, 25%). PM2.5 mass and total carbon concentrations were three to four times higher during winter than summer especially in the northern cities that use coal combustion for heating.Yan ChengJudith C. ChowJohn G. WatsonJiamao ZhouSuixin LiuJunji CaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yan Cheng Judith C. Chow John G. Watson Jiamao Zhou Suixin Liu Junji Cao Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
description	Abstract Carbonaceous aerosols were characterized in 19 Chinese cities during winter and summer of 2013. Measurements of organic carbon (OC) and elemental carbon (EC) levels were compared with those from 14 corresponding cities sampled in 2003 to evaluate effects of emission changes over a decade. Average winter and summer OC and EC decreased by 32% and 17%, respectively, from 2003 to 2013, corresponding to nationwide emission control policies implemented since 2006. The extent of carbon reduction varied by season and by location. Larger reductions were found for secondary organic carbon (SOC, 49%) than primary organic carbon (POC, 25%). PM2.5 mass and total carbon concentrations were three to four times higher during winter than summer especially in the northern cities that use coal combustion for heating.
format	article
author	Yan Cheng Judith C. Chow John G. Watson Jiamao Zhou Suixin Liu Junji Cao
author_facet	Yan Cheng Judith C. Chow John G. Watson Jiamao Zhou Suixin Liu Junji Cao
author_sort	Yan Cheng
title	Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title_short	Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title_full	Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title_fullStr	Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title_full_unstemmed	Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title_sort	decreasing concentrations of carbonaceous aerosols in china from 2003 to 2013
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/04b7e1afe468487096b4ee606f65b91e
work_keys_str_mv	AT yancheng decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013 AT judithcchow decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013 AT johngwatson decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013 AT jiamaozhou decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013 AT suixinliu decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013 AT junjicao decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013
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Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013

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