Variation in black carbon concentration and aerosol optical properties in Beijing: Role of emission control and meteorological transport variability | |
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 | |
通讯作者 | Wu, Yunfei(wuyf@mail.iap.ac.cn) |
2020-09-01 | |
发表期刊 | CHEMOSPHERE |
ISSN | 0045-6535 |
卷号 | 254页码:14 |
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. |
关键词 | Black carbon Beijing Emission control Transport variability |
DOI | 10.1016/j.chemosphere.2020.126849 |
关键词[WOS] | POLYCYCLIC AROMATIC-HYDROCARBONS ; LIGHT-ABSORPTION MEASUREMENTS ; AIR-QUALITY IMPROVEMENT ; SOURCE APPORTIONMENT ; REGIONAL TRANSPORT ; 7-WAVELENGTH AETHALOMETER ; CHEMICAL-COMPOSITION ; HAZE POLLUTION ; BROWN CARBON ; CHINA |
收录类别 | SCI ; SCI |
语种 | 英语 |
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 |
项目资助者 | 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 |
WOS类目 | Environmental Sciences |
WOS记录号 | WOS:000538150400090 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/14939 |
专题 | 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. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论