| Optical properties of mountain primary and secondary brown carbon aerosols in summertime | |
| Gao, Yuan1; Wang, Qiyuan2,3,4; Li, Li2; Dai, Wenting2; Yu, Jinjiang5; Ding, Limin5; Li, Jianjun2; Xin, Bo6; Ran, Weikang2; Han, Yongming2,3,4; Cao, Junji2 | |
| Corresponding Author | Wang, Qiyuan(wangqy@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn) |
| 2022-02-01 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| Volume | 806Pages:11 |
| Abstract | Brown carbon (BrC) can affect atmospheric radiation due to its strong absorption ability from the near ultraviolet to the visible range, thereby influencing global climate. However, given the complexity of BrC's chemical composition, its optical properties are still poorly understood, especially in mountainous areas. In this study, the black carbon (BC) tracer method is used to explore the light-absorbing properties of primary and secondary BrC at Mount Hua, China during the 2018 summer period. The primary BrC absorption contributes to 10-15% of the total BrC absorption at a wavelength of 370 nm. From the positive matrix factorization analysis, traffic emissions are found to be a major source of primary BrC absorption (44%), followed by industry and biomass-burning emissions (29%). The secondary BrC accounts for 87% of the total BrC absorption at a wavelength of 370 nm, indicating that BrC is dominated by secondary formation. The observation of a higher secondary BrC absorption diurnal pattern at Mount Hua can be affected by secondary BrC in the residual layer after sunrise and the formation of light-absorbing chromophores by photochemical oxidation in the afternoon. The estimated average mass absorption efficiencies of primary and secondary BrC (MAE(_pri) and MAE(_sec), respectively) are 0.4 m(2)/g and 2.1 m(2)/g at wavelengths of 370 nm, respectively, indicating a stronger light-absorbing ability for secondary BrC than for primary BrC. There is no significant difference in MAE(_pri) within a daily variation, but the daytime MAE(_sec) value is higher than that during the night. Our study shows that secondary BrC is important to light absorption in mountainous areas. (C) 2021 Elsevier B.V. All rights reserved. |
| Keyword | Brown carbon (BrC) Aerosol absorption Optical properties Mountain area |
| DOI | 10.1016/j.scitotenv.2021.150570 |
| WOS Keyword | ABSORPTION ANGSTROM EXPONENT ; PLANETARY BOUNDARY-LAYER ; LIGHT-ABSORPTION ; ORGANIC AEROSOL ; BLACK CARBON ; CHEMICAL-COMPOSITION ; SIZE DISTRIBUTION ; ELEMENTAL CARBON ; INLAND CHINA ; EAST CHINA |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | Key Research and Development Program of Shaanxi Province[2018-ZDXM3-01] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; Youth Innovation Promotion Association of the Chinese Academy Sciences[2019402] ; Research Start-up fund of Beijing Normal University at Zhuhai[28714-111032101] |
| WOS Research Area | Environmental Sciences & Ecology |
| Funding Organization | Key Research and Development Program of Shaanxi Province ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy Sciences ; Research Start-up fund of Beijing Normal University at Zhuhai |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000707655000009 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/17113 |
| Collection | 粉尘与环境研究室 第四纪科学与全球变化卓越创新中心 |
| Corresponding Author | Wang, Qiyuan; Cao, Junji |
| Affiliation | 1.Beijing Normal Univ Zhuhai, Adv Inst Nat Sci, Zhuhai 519087, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Guanzhong Plain Ecol Environm Change & Comprehens, Guangzhou, Peoples R China 5.Huashan Meteorol Stn, Weinan 714000, Peoples R China 6.Weinan Meteorol Adm, Weinan 714000, Peoples R China |
| Recommended Citation GB/T 7714 | Gao, Yuan,Wang, Qiyuan,Li, Li,et al. Optical properties of mountain primary and secondary brown carbon aerosols in summertime[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,806:11. |
| APA | Gao, Yuan.,Wang, Qiyuan.,Li, Li.,Dai, Wenting.,Yu, Jinjiang.,...&Cao, Junji.(2022).Optical properties of mountain primary and secondary brown carbon aerosols in summertime.SCIENCE OF THE TOTAL ENVIRONMENT,806,11. |
| MLA | Gao, Yuan,et al."Optical properties of mountain primary and secondary brown carbon aerosols in summertime".SCIENCE OF THE TOTAL ENVIRONMENT 806(2022):11. |
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