Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-2445-2020 |
Amplification of black carbon light absorption induced by atmospheric aging: temporal variation at seasonal and diel scales in urban Guangzhou | |
Sun, Jia Yin1,2; Wu, Cheng1,2; Wu, Dui1,2,3; Cheng, Chunlei1,2; Li, Mei1,2; Li, Lei1,2; Deng, Tao3; Yu, Jian Zhen4,5,6; Li, Yong Jie7; Zhou, Qianni1,2; Liang, Yue1,2; Sun, Tianlin1,2; Song, Lang1,2; Cheng, Peng1,2; Yang, Wenda1,2; Pei, Chenglei8,9,10,11; Chen, Yanning11; Cen, Yanxiang12; Nian, Huiqing12; Zhou, Zhen1,2 | |
2020-02-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:4页码:2445-2470 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Black carbon (BC) aerosols have been widely recognized as a vital climate forcer in the atmosphere. Amplification of light absorption can occur due to coatings on BC during atmospheric aging, an effect that remains uncertain in accessing the radiative forcing of BC. Existing studies on the absorption enhancement factor (E-abs) have poor coverage on both seasonal and diurnal scales. In this study, we applied a recently developed minimum R squared (MRS) method, which can cover both seasonal and diurnal scales, for E-abs quantification. Using field measurement data in Guangzhou, the aims of this study are to explore (1) the temporal dynamics of BC optical properties at seasonal (wet season, 31 July-10 September; dry season, 15 November 2017-15 January 2018) and did scales (1 h time resolution) in the typical urban environment and (2) the influencing factors on E-abs temporal variability. Mass absorption efficiency at 520 nm by primary aerosols (MAE(p520)) determined by the MRS method exhibited a strong seasonality (8.6 m(2) g(-1) in the wet season and 16.8 m(2) g(-1) in the dry season). E-abs520 was higher in the wet season (1.51 +/- 0.50) and lower in the dry season (1.29 +/- 0.28). Absorption Angstrom exponent (AAE(470-660)) in the dry season (1.46 +/- 0.12) was higher than that in the wet season (1.37 +/- 0.10). Collective evidence showed that the active biomass burning (BB) in the dry season effectively altered the optical properties of BC, leading to elevated MAE, MAE(p) and AAE in the dry season compared to those in the wet season. Diurnal E(abs520 )was positively correlated with AAE470-660 (R-2 = 0.71) and negatively correlated with the AE33 aerosol loading compensation parameter (k) (R-2 = 0.74) in the wet season, but these correlations were significantly weaker in the dry season, which may be related to the impact of BB. This result suggests that during the wet season, the lensing effect was more likely dominating the AAE diurnal variability rather than the contribution from brown carbon (BrC). Secondary processing can affect Eabs diurnal dynamics The E-abs520 exhibited a clear dependency on the ratio of secondary organic carbon to organic carbon (SOC/OC), confirming the contribution of secondary organic aerosols to E-abs; Ea(bs520) correlated well with nitrate and showed a clear dependence on temperature. This new finding implies that gas-particle partitioning of semivolatile compounds may potentially play an important role in steering the diurnal fluctuation of E-abs520. In the dry season, the diurnal variability in E-abs520 was associated with photochemical aging as evidenced by the good correlation (R-2 =0.69) between oxidant concentrations (O-x = O-3 + NO2) and E-abs520. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000518197400006 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; FENTON-LIKE OXIDATION ; RIVER DELTA REGION ; PARTICULATE BROWN CARBON ; BIOMASS BURNING AEROSOLS ; SMALL AROMATIC-ACIDS ; OPTICAL-PROPERTIES ; MIXING-STATE ; ELEMENTAL CARBON ; AMBIENT BLACK |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278652 |
专题 | 地球科学 |
作者单位 | 1.Jinan Univ, Inst Mass Spectrometry & Atmospher Environm, Guangzhou 510632, Peoples R China; 2.Guangdong Prov Engn Res Ctr Online Source Apporti, Guangzhou 510632, Peoples R China; 3.CMA, Inst Trop & Marine Meteorol, Guangzhou 510080, Peoples R China; 4.Hong Kong Univ Sci & Technol, Dept Chem, Hong Kong, Peoples R China; 5.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong, Peoples R China; 6.HKUST Fok Ying Tung Res Inst, Atmospher Res Ctr, Guangzhou 511400, Peoples R China; 7.Univ Macau, Fac Sci & Technol, Macau, Peoples R China; 8.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China; 9.Chinese Acad Sci, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China; 10.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 11.Guangzhou Environm Monitoring Ctr, Guangzhou 510030, Peoples R China; 12.Guangzhou Hexin Analyt Instrument Co Ltd, Guangzhou 510530, Peoples R China |
推荐引用方式 GB/T 7714 | Sun, Jia Yin,Wu, Cheng,Wu, Dui,et al. Amplification of black carbon light absorption induced by atmospheric aging: temporal variation at seasonal and diel scales in urban Guangzhou[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(4):2445-2470. |
APA | Sun, Jia Yin.,Wu, Cheng.,Wu, Dui.,Cheng, Chunlei.,Li, Mei.,...&Zhou, Zhen.(2020).Amplification of black carbon light absorption induced by atmospheric aging: temporal variation at seasonal and diel scales in urban Guangzhou.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(4),2445-2470. |
MLA | Sun, Jia Yin,et al."Amplification of black carbon light absorption induced by atmospheric aging: temporal variation at seasonal and diel scales in urban Guangzhou".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.4(2020):2445-2470. |
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