Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013

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 wi...

Descripción completa

Detalles Bibliográficos
Autores principales: Cheng, Yan, Chow, Judith C., Watson, John G., Zhou, Jiamao, Liu, Suixin, Cao, Junji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7935893/
https://www.ncbi.nlm.nih.gov/pubmed/33674655
http://dx.doi.org/10.1038/s41598-021-84429-w
_version_ 1783661090943533056
author Cheng, Yan
Chow, Judith C.
Watson, John G.
Zhou, Jiamao
Liu, Suixin
Cao, Junji
author_facet Cheng, Yan
Chow, Judith C.
Watson, John G.
Zhou, Jiamao
Liu, Suixin
Cao, Junji
author_sort Cheng, Yan
collection PubMed
description 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%). PM(2.5) 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 Online
Article
Text
id pubmed-7935893
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-79358932021-03-08 Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013 Cheng, Yan Chow, Judith C. Watson, John G. Zhou, Jiamao Liu, Suixin Cao, Junji Sci Rep Article 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%). PM(2.5) 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. Nature Publishing Group UK 2021-03-05 /pmc/articles/PMC7935893/ /pubmed/33674655 http://dx.doi.org/10.1038/s41598-021-84429-w Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Cheng, Yan
Chow, Judith C.
Watson, John G.
Zhou, Jiamao
Liu, Suixin
Cao, Junji
Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title 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_short Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013
title_sort decreasing concentrations of carbonaceous aerosols in china from 2003 to 2013
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7935893/
https://www.ncbi.nlm.nih.gov/pubmed/33674655
http://dx.doi.org/10.1038/s41598-021-84429-w
work_keys_str_mv AT chengyan decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013
AT chowjudithc decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013
AT watsonjohng decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013
AT zhoujiamao decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013
AT liusuixin decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013
AT caojunji decreasingconcentrationsofcarbonaceousaerosolsinchinafrom2003to2013

Ejemplares similares