Knowledge Management System of Hefei Institute of Physical Science,CAS
Vertical characterization and potential sources of aerosols in different seasons over the Yangtze River Delta using ground-based MAX-DOAS | |
Ou, Jinping1; Hu, Qihou2; Liu, Haoran1; Hong, Qianqian3; Xing, Chengzhi2; Tan, Wei2; Lin, Hua4; Wang, Xinqi1; Xu, Heng1; Zhu, Pengcheng1; Liu, Wenqing1,2![]() | |
2021-06-15 | |
发表期刊 | ENVIRONMENTAL POLLUTION
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ISSN | 0269-7491 |
通讯作者 | Hu, Qihou(qhhu@aiofm.ac.cn) |
摘要 | Assessing the vertical distribution of aerosols in the atmosphere can elucidate the regional sources of accumulated pollutants at different altitudes. Although studies in Hefei have mainly focused on aerosols in the near-surface atmosphere, few studies have assessed the vertical variability in aerosol concentrations. In this study, the vertical aerosol distribution in Hefei was analyzed continuously for one year (from March 2018 to February 2019) using multi-axis differential optical absorption spectroscopy. The aerosol extinction coefficient was the highest in winter (0.94 km(-1)), followed by autumn (0.63 km(-1)), spring (0.57 km(-1)), and summer (0.47 km(-1)). Local pollution caused the accumulation of aerosols near the surface. The rate of decrease of the aerosol extinction coefficient was higher in autumn and winter than in spring and summer. The diurnal variations of aerosol extinction coefficient in the different seasons were affected by the planetary boundary layer height, and we observed notable high-altitude transport of aerosols in autumn. We assessed the vertical distribution of the aerosol extinction coefficient under different pollution concentrations and identified peak values mainly below a height of 0.5 km. With increasing height, the extinction coefficient decreased linearly and slowly under low PM2.5 concentrations, whereas decreased more rapidly under high PM2.5 concentrations. Clustering analysis, the weight potential source concentration function, and the concentration weighted trajectory model inferred different seasonal characteristics in the potential source areas of aerosols at different heights. In addition to local pollution sources, Jiangsu Province was found to be the main source of pollution in Hefei at a height of 0.4 km, whereas Hubei Province was the main source of pollution at a height of 2 km. (C) 2021 Elsevier Ltd. All rights reserved. |
关键词 | Multi-axis differential optical absorption spectroscopy (MAX-DOAS) Hefei Regional transport Aerosol extinction coefficient |
DOI | 10.1016/j.envpol.2021.116898 |
关键词[WOS] | OPTICAL-PROPERTIES ; TROPOSPHERIC AEROSOLS ; REGIONAL TRANSPORT ; BLACK CARBON ; PROFILES ; NO2 ; POLLUTION ; CHINA ; HEFEI ; SO2 |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Key Research and Development Program of China[2017YFC0210002] ; National Key Research and Development Program of China[2018YFC0213104] ; National Key Research and Development Program of China[2016YFC0203302] ; National Key Research and Development Program of China[2017YFC0212800] ; National Natural Science Foundation of China[41722501] ; National Natural Science Foundation of China[51778596] ; National Natural Science Foundation of China[41977184] ; National Natural Science Foundation of China[41941011] ; Anhui Science and Technology Major Project[18030801111] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020301] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0102] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0205] ; Natural Science Foundation of Anhui Province[1908085QD170] ; Key Research and Development Project of Anhui Province[202004i07020002] ; Youth Innovation Promotion Association of CAS[2021443] ; Center for Excellence in Regional Atmospheric Environment, CAS[CERAE202004] |
项目资助者 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Anhui Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Project for Causes and Control of Heavy Air Pollution ; Natural Science Foundation of Anhui Province ; Key Research and Development Project of Anhui Province ; Youth Innovation Promotion Association of CAS ; Center for Excellence in Regional Atmospheric Environment, CAS |
WOS研究方向 | Environmental Sciences & Ecology |
WOS类目 | Environmental Sciences |
WOS记录号 | WOS:000644822400016 |
出版者 | ELSEVIER SCI LTD |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/122174 |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Hu, Qihou |
作者单位 | 1.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 3.Jiangnan Univ, Wuxi 214122, Jiangsu, Peoples R China 4.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China |
通讯作者单位 | 中科院安徽光学精密机械研究所 |
推荐引用方式 GB/T 7714 | Ou, Jinping,Hu, Qihou,Liu, Haoran,et al. Vertical characterization and potential sources of aerosols in different seasons over the Yangtze River Delta using ground-based MAX-DOAS[J]. ENVIRONMENTAL POLLUTION,2021,279. |
APA | Ou, Jinping.,Hu, Qihou.,Liu, Haoran.,Hong, Qianqian.,Xing, Chengzhi.,...&Liu, Wenqing.(2021).Vertical characterization and potential sources of aerosols in different seasons over the Yangtze River Delta using ground-based MAX-DOAS.ENVIRONMENTAL POLLUTION,279. |
MLA | Ou, Jinping,et al."Vertical characterization and potential sources of aerosols in different seasons over the Yangtze River Delta using ground-based MAX-DOAS".ENVIRONMENTAL POLLUTION 279(2021). |
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