Enhanced PM2.5 pollution in China due to aerosol-cloud interactions

Abstract Aerosol-cloud interactions (aerosol indirect effects) play an important role in regional meteorological variations, which could further induce feedback on regional air quality. While the impact of aerosol-cloud interactions on meteorology and climate has been extensively studied, their feed...

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Autores principales:	Bin Zhao, Kuo-Nan Liou, Yu Gu, Qinbin Li, Jonathan H. Jiang, Hui Su, Cenlin He, Hsien-Liang R. Tseng, Shuxiao Wang, Run Liu, Ling Qi, Wei-Liang Lee, Jiming Hao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0c418540ddfc465ca6ab86a2e0c3a07e
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spelling	oai:doaj.org-article:0c418540ddfc465ca6ab86a2e0c3a07e2021-12-02T15:05:42ZEnhanced PM2.5 pollution in China due to aerosol-cloud interactions10.1038/s41598-017-04096-82045-2322https://doaj.org/article/0c418540ddfc465ca6ab86a2e0c3a07e2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04096-8https://doaj.org/toc/2045-2322Abstract Aerosol-cloud interactions (aerosol indirect effects) play an important role in regional meteorological variations, which could further induce feedback on regional air quality. While the impact of aerosol-cloud interactions on meteorology and climate has been extensively studied, their feedback on air quality remains unclear. Using a fully coupled meteorology-chemistry model, we find that increased aerosol loading due to anthropogenic activities in China substantially increases column cloud droplet number concentration and liquid water path (LWP), which further leads to a reduction in the downward shortwave radiation at surface, surface air temperature and planetary boundary layer (PBL) height. The shallower PBL and accelerated cloud chemistry due to larger LWP in turn enhance the concentrations of particulate matter with diameter less than 2.5 μm (PM2.5) by up to 33.2 μg m−3 (25.1%) and 11.0 μg m−3 (12.5%) in January and July, respectively. Such a positive feedback amplifies the changes in PM2.5 concentrations, indicating an additional air quality benefit under effective pollution control policies but a penalty for a region with a deterioration in PM2.5 pollution. Additionally, we show that the cloud processing of aerosols, including wet scavenging and cloud chemistry, could also have substantial effects on PM2.5 concentrations.Bin ZhaoKuo-Nan LiouYu GuQinbin LiJonathan H. JiangHui SuCenlin HeHsien-Liang R. TsengShuxiao WangRun LiuLing QiWei-Liang LeeJiming HaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bin Zhao Kuo-Nan Liou Yu Gu Qinbin Li Jonathan H. Jiang Hui Su Cenlin He Hsien-Liang R. Tseng Shuxiao Wang Run Liu Ling Qi Wei-Liang Lee Jiming Hao Enhanced PM2.5 pollution in China due to aerosol-cloud interactions
description	Abstract Aerosol-cloud interactions (aerosol indirect effects) play an important role in regional meteorological variations, which could further induce feedback on regional air quality. While the impact of aerosol-cloud interactions on meteorology and climate has been extensively studied, their feedback on air quality remains unclear. Using a fully coupled meteorology-chemistry model, we find that increased aerosol loading due to anthropogenic activities in China substantially increases column cloud droplet number concentration and liquid water path (LWP), which further leads to a reduction in the downward shortwave radiation at surface, surface air temperature and planetary boundary layer (PBL) height. The shallower PBL and accelerated cloud chemistry due to larger LWP in turn enhance the concentrations of particulate matter with diameter less than 2.5 μm (PM2.5) by up to 33.2 μg m−3 (25.1%) and 11.0 μg m−3 (12.5%) in January and July, respectively. Such a positive feedback amplifies the changes in PM2.5 concentrations, indicating an additional air quality benefit under effective pollution control policies but a penalty for a region with a deterioration in PM2.5 pollution. Additionally, we show that the cloud processing of aerosols, including wet scavenging and cloud chemistry, could also have substantial effects on PM2.5 concentrations.
format	article
author	Bin Zhao Kuo-Nan Liou Yu Gu Qinbin Li Jonathan H. Jiang Hui Su Cenlin He Hsien-Liang R. Tseng Shuxiao Wang Run Liu Ling Qi Wei-Liang Lee Jiming Hao
author_facet	Bin Zhao Kuo-Nan Liou Yu Gu Qinbin Li Jonathan H. Jiang Hui Su Cenlin He Hsien-Liang R. Tseng Shuxiao Wang Run Liu Ling Qi Wei-Liang Lee Jiming Hao
author_sort	Bin Zhao
title	Enhanced PM2.5 pollution in China due to aerosol-cloud interactions
title_short	Enhanced PM2.5 pollution in China due to aerosol-cloud interactions
title_full	Enhanced PM2.5 pollution in China due to aerosol-cloud interactions
title_fullStr	Enhanced PM2.5 pollution in China due to aerosol-cloud interactions
title_full_unstemmed	Enhanced PM2.5 pollution in China due to aerosol-cloud interactions
title_sort	enhanced pm2.5 pollution in china due to aerosol-cloud interactions
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0c418540ddfc465ca6ab86a2e0c3a07e
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Enhanced PM2.5 pollution in China due to aerosol-cloud interactions

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