Contribution of PAHs and NACs to Brown Carbon Light Absorption in PM2.5 in Nanchang, Southern China DOI
Hong Huang, Xiang Xu, Changwei Zou

et al.

Atmospheric Environment, Journal Year: 2024, Volume and Issue: unknown, P. 121010 - 121010

Published: Dec. 1, 2024

Language: Английский

Characteristics, seasonal variations, and dry deposition fluxes of carbonaceous and water-soluble organic components in atmospheric aerosols over China's marginal seas DOI
Sen Zhao,

Jianhua Qi,

Xue Ding

et al.

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 191, P. 114940 - 114940

Published: April 21, 2023

Language: Английский

Citations

10
Optical properties of carbonaceous aerosols and source impacts in the Lanzhou valley: In-situ observations by means of topographical relief DOI

Shaofeng Qi,

Suping Zhao, Yu Ye

et al.

Urban Climate, Journal Year: 2025, Volume and Issue: 59, P. 102302 - 102302

Published: Jan. 24, 2025

Language: Английский

Citations

0
Global distribution and warming effect of brown carbon from shipping emissions DOI Creative Commons
Yiyang Sun, Junjun Deng, Fan Zhang

et al.

Carbon Research, Journal Year: 2025, Volume and Issue: 4(1)

Published: May 20, 2025

Abstract Emissions of shipping have great influences on atmospheric environment and global climate with the growth maritime trade. Previous studies identified that black carbon (BC) constitutes main aerosol component responsible for light absorption, while organic (OC) was generally considered non-absorbing. Recent indicated components derived from emissions exhibit absorption at short wavelengths (brown carbon, BrC). However, there is a lack quantification regarding effects BrC. This study investigates radiative effect (RAE) BrC, updating models measured BrC ability. Surface concentrations contribute ~ 40% to fossil fuel OC. The annual average RAE +0.15 +0.36 mW m⁻ 2 , peaking in boreal summer. warming 8%–19% relative BC. With low-sulfur standard, increases +0.52 which close BC (+0.52 ) could offset direct cooling sulfate. For aerosols, an important part, whose contribution greater upgrade ship fuels. Graphical

Language: Английский

Citations

0
Particle Size, Effects of Distance and Height from Source, Carbon Components, and Source of Dust in Nanchang, Central China DOI Creative Commons
Hong Huang, Zihan Huang, Changwei Zou

et al.

Atmosphere, Journal Year: 2024, Volume and Issue: 15(1), P. 133 - 133

Published: Jan. 21, 2024

Regional air quality and major sources can be reflected by dust. 87 dust samples in Nanchang (four residential areas three roadside points) were collected, with particle size carbon components determined to discuss the distribution characteristics sources. The of different sampling was similar, composed mainly particles larger than 10 μm (over 69.8%). Dust showed a decreasing trend increasing horizontal distance from main road vertical height ground. EC higher that outdoors indoors same area. OC indoor atmospheric when there obvious emission fractions OC3 EC1, EC2 OC3. affected human activities motor vehicle emissions, respectively. ratio OC/EC SOC decreased autumn winter. at medium level compared other cities/regions around world. Clustering analysis principal component indicated combustion (coal biomass combustion, etc.), exhaust (gasoline diesel vehicles), (cooking fumes, cigarette smoking, etc.) contributors

Language: Английский

Citations

2
Evolution of Light Absorption Enhancement of Black Carbon Aerosols From Biomass Burning in Atmospheric Photochemical Aging DOI
Xuewei Fu, Xinyi Li, Fang Zhang

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2024, Volume and Issue: 129(16)

Published: Aug. 12, 2024

Abstract The light absorption enhancement (E abs ) of black carbon (BC) coated with non‐BC materials is crucial in the assessment radiative forcing, yet its evolution during photochemical aging plumes from biomass burning, globe's largest source BC, remains poorly understood. In this study, open burning corn straw were introduced into a smog chamber to explore E aging. BC was measured and without coating by using thermodenuder, while size distributions aerosols composition also monitored. found increase initially, then decrease an overall downward trend. lensing effect dominated at 520 nm, estimated contribution percentages 47.5%–94.5%, which far greater than brown (BrC). effects thickening chemical changes on evaluated through comparing that calculated Mie theory. After OH exposure 1 × 10 molecules cm −3 s, led 3.2% ± 1.6%, or photobleaching induced 4.7% 0.6%. Simple forcing estimates indicate exhibit warming reduced after oxidation light‐absorbing C x H y compounds, such as polycyclic aromatic hydrocarbons (PAHs), O >1 compounds may be responsible for BrC.

Language: Английский

Citations

2
Optimization of temperature protocol for carbonaceous aerosol thermal-optical analysis using the TLLP approach DOI
Jing Wang, Wenyu Bai, Yingying Liu

et al.

Atmospheric Pollution Research, Journal Year: 2024, Volume and Issue: 15(4), P. 102062 - 102062

Published: Jan. 26, 2024

Language: Английский

Citations

1
Emission and optical characteristics of brown carbon in size-segregated particles from three types of Chinese ships DOI

Fengqin Yang,

Fan Zhang, Zeyu Liu

et al.

Journal of Environmental Sciences, Journal Year: 2023, Volume and Issue: 142, P. 248 - 258

Published: June 7, 2023

Language: Английский

Citations

2
Contribution of PAHs and NACs to Brown Carbon Light Absorption in PM2.5 in Nanchang, Southern China DOI
Hong Huang, Xiang Xu, Changwei Zou

et al.

Atmospheric Environment, Journal Year: 2024, Volume and Issue: unknown, P. 121010 - 121010

Published: Dec. 1, 2024

Language: Английский

Citations

0