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Variation in black carbon concentration and aerosol optical properties in Beijing: Role of emission control and meteorological transport variability

文献类型：期刊论文

作者Xia, Yunjie1,2,6; Wu, Yunfei1; Huang, Ru-Jin3,4; Xia, Xiangao2; Tang, Jie5; Wang, Mian5; Li, Jiwei1,6; Wang, Chaoying1,6; Zhou, Chang1,6; Zhang, Renjian1
刊名CHEMOSPHERE
出版日期2020-09-01
卷号254页码:14
ISSN号0045-6535
关键词Black carbon Beijing Emission control Transport variability
DOI10.1016/j.chemosphere.2020.126849
通讯作者Wu, Yunfei(wuyf@mail.iap.ac.cn)
英文摘要Black carbon (BC), which is a by-product with incomplete combustion of carbonaceous materials, can be used as an indicator of combustion emissions and is an important climate forcer. In this study, a spatial-temporal synthesis of BC aerosols and the affecting factors was conducted in urban Beijing. As observed, BC showed a spatial pattern with high concentration in south and low in north. BC concentration evidently decreased by approximately 61% between 2005 and 2017. From 2015 to 2017, the mass ratio of BC/PM2.5 dropped by 28%, which suggested a more efficient effect of control measures to BC than PM2.5. The BC/CO ratio dropped by 22%, which indicated the decreasing emission from fossil fuel sources. With regard to BC loading, the spectral dependence of absorption aerosol exhibited significant seasonal variations. High absorption Angstrom exponent (alpha) was observed during heating season, which reflected the increasing contribution of brown carbon (BrC) to light absorption. Backward trajectory analysis showed that the levels of BC and PM2.5 were high in Cluster-South and Cluster-West. BrC absorption was high in Cluster-West, Cluster-Northwest and Cluster-Northeast, due to the biomass and coal burning for domestic heating and aging processes on a regional scale. The effects of emission control and transport variability on pollutant variation were estimated on the basis of the cluster analysis. Results indicated that the effect of emission reduction was the major reason for the decrease of BC from 2015 to 2017, which resulted in a 34% reduction of BC concentration. Meanwhile, transport variability caused a 15% reduction. (C) 2020 Elsevier Ltd. All rights reserved.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; LIGHT-ABSORPTION MEASUREMENTS ; AIR-QUALITY IMPROVEMENT ; SOURCE APPORTIONMENT ; REGIONAL TRANSPORT ; 7-WAVELENGTH AETHALOMETER ; CHEMICAL-COMPOSITION ; HAZE POLLUTION ; BROWN CARBON ; CHINA
资助项目National Key Research and Development Program of China[2019YFA0606801] ; National Key Research and Development Program of China[2017YFC0209601] ; Natural Science Foundation of China[41775155] ; Natural Science Foundation of China[91644217] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105] ; Jiangsu Collaborative Innovation Center for Climate Change
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000538150400090
资助机构National Key Research and Development Program of China ; Natural Science Foundation of China ; National Research Program for Key Issues in Air Pollution Control ; Jiangsu Collaborative Innovation Center for Climate Change
源URL[http://ir.ieecas.cn/handle/361006/14938]  
专题地球环境研究所_粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Wu, Yunfei
作者单位1.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm Temperate East Asia, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China
4.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
5.China Meteorol Adm, Meteorol Observat Ctr, Beijing 100081, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Xia, Yunjie,Wu, Yunfei,Huang, Ru-Jin,et al. Variation in black carbon concentration and aerosol optical properties in Beijing: Role of emission control and meteorological transport variability[J]. CHEMOSPHERE,2020,254:14.
APA Xia, Yunjie.,Wu, Yunfei.,Huang, Ru-Jin.,Xia, Xiangao.,Tang, Jie.,...&Zhang, Renjian.(2020).Variation in black carbon concentration and aerosol optical properties in Beijing: Role of emission control and meteorological transport variability.CHEMOSPHERE,254,14.
MLA Xia, Yunjie,et al."Variation in black carbon concentration and aerosol optical properties in Beijing: Role of emission control and meteorological transport variability".CHEMOSPHERE 254(2020):14.

入库方式： OAI收割

来源：地球环境研究所

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