| Estimating Absorption Angstrom Exponent of Black Carbon Aerosol by Coupling Multiwavelength Absorption with Chemical Composition | |
| Wang, Qiyuan1,3; Liu, Huikun1; Ye, Jianhuai2; Tian, Jie1; Zhang, Ting1; Zhang, Yong1; Liu, Suixin1; Cao, Junji1,3 | |
| Corresponding Author | Wang, Qiyuan(wangqy@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn) |
| 2021-02-09 | |
| Source Publication | ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
 |
| ISSN | 2328-8930 |
| Volume | 8Issue:2Pages:121-127 |
| Abstract | Light absorption by black carbon (BC) and brown carbon (BrC) aerosols determines their impacts on climate warming, and the absorption Angstrom exponent (AAE ) attribution method often is used to distinguish the contributions of the two species to light absorption, but obtaining an accurate value for BC AAE (AAE(BC)) has proven challenging. In this study, a receptor model was coupled with multiwavelength absorption information for light-absorbing aerosols used to retrieve a site-dependent AAE(BC) that reflected the optical properties of the bulk BC aerosol. The results of a positive matrix factorization model showed that AAE(BC )could be separated in contributions from two BC-related factors (pure-BC and BC-rich) during the campaign, and the retrieved average AAE(BC) was 1.19, which is within the range of values obtained through source-related experiments and numerical calculations. The BrC light absorption estimated from AAE(BC) = 1.19 was significantly different from the value (i-e.,AAE(BC) = 1.0) usually assumed in the literature. Our study provides insights that can improve the accuracy in quantifying the light absorption caused by carbonaceous aerosols, especially BrC. |
| DOI | 10.1021/acs.estlett.0c00829 |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | Key Research and Development Program of Shaanxi Province[2018-ZDXM301] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Natural Science Foundation of China[21661132005] ; National Atmospheric Research Program[2017YFC0212200] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019402] |
| WOS Research Area | Engineering ; Environmental Sciences & Ecology |
| Funding Organization | Key Research and Development Program of Shaanxi Province ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Atmospheric Research Program ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| WOS Subject | Engineering, Environmental ; Environmental Sciences |
| WOS ID | WOS:000618878400004 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/16012 |
| 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.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Qiyuan,Liu, Huikun,Ye, Jianhuai,et al. Estimating Absorption Angstrom Exponent of Black Carbon Aerosol by Coupling Multiwavelength Absorption with Chemical Composition[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2021,8(2):121-127. |
| APA | Wang, Qiyuan.,Liu, Huikun.,Ye, Jianhuai.,Tian, Jie.,Zhang, Ting.,...&Cao, Junji.(2021).Estimating Absorption Angstrom Exponent of Black Carbon Aerosol by Coupling Multiwavelength Absorption with Chemical Composition.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,8(2),121-127. |
| MLA | Wang, Qiyuan,et al."Estimating Absorption Angstrom Exponent of Black Carbon Aerosol by Coupling Multiwavelength Absorption with Chemical Composition".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 8.2(2021):121-127. |
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