Collocated Measurements of Light‐Absorbing Organic Carbon in PM2.5: Observation Uncertainty and Organic Tracer‐Based Source Apportionment DOI
Mingjie Xie, Xinghao Peng,

Yue Shang

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2022, Volume and Issue: 127(5)

Published: Feb. 24, 2022

Abstract In this study, collocated filter samples of particulate matter with aerodynamic diameter less than 2.5 μm (PM ) from northern Nanjing were extracted using water and methanol, followed by analysis light absorption. A backup quartz was used to correct sampling artifacts caused adsorption gaseous organics. The precision light‐absorbing properties water‐soluble organic carbon (WSOC) methanol‐extractable (MEOC) parameterized correlation coefficient ( r ), divergence (COD), average relative percent difference (ARPD, %). general, the absorption WSOC MEOC showed good agreement > 0.80, COD < 0.20) between samples. Performing artifact correction is necessary will increase heterogeneity measurements. duplicate‐derived ARPD values more 60% higher those Then, it would be inappropriate assume a uniform uncertainty fraction (e.g., ∼10%) for in future studies on their climate effects source apportionment. To apportion artifact‐corrected aerosol extracts specific emission sources or formation pathways, positive matrix factorization performed concentration data selected bulk species molecular markers. Among nine identified factor/sources, biomass burning factor had highest contributions both (31.6%) (48.0%), dust resuspension coal combustion factors. Unlike combustion‐related primary emissions, factors containing influences atmospheric processing secondary nitrate) contributed fractions

Language: Английский

Substantial brown carbon emissions from wintertime residential wood burning over France DOI Creative Commons
Yunjiang Zhang, Alexandre Albinet, Jean‐Eudes Petit

et al.

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 743, P. 140752 - 140752

Published: July 6, 2020

Language: Английский

Citations

96
Apportionment of black and brown carbon spectral absorption sources in the urban environment of Athens, Greece, during winter DOI
Dimitris G. Kaskaoutis, Georgios Grivas, Iasonas Stavroulas

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 801, P. 149739 - 149739

Published: Aug. 20, 2021

Language: Английский

Citations

70
Rate of atmospheric brown carbon whitening governed by environmental conditions DOI Creative Commons
Elijah G. Schnitzler, Nealan G. A. Gerrebos, Therese S. Carter

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(38)

Published: Sept. 12, 2022

Biomass burning organic aerosol (BBOA) in the atmosphere contains many compounds that absorb solar radiation, called brown carbon (BrC). While BBOA is atmosphere, BrC can undergo reactions with oxidants such as ozone which decrease absorbance, or whiten. The effect of temperature and relative humidity (RH) on whitening has not been well constrained, leading to uncertainties when predicting direct radiative climate. Using an flow-tube reactor, we show by oxidation strongly dependent RH temperature. a poke-flow technique, viscosity also depends these conditions. measured rate described data, assuming due occurring bulk BBOA, within thin shell beneath surface. our combined datasets, developed kinetic model this process, lifetime 1 d less below ∼1 km altitude but often much longer than above altitude. Including dependence chemical transport causes large change predicted warming Overall, results illustrate need be considered understand role atmosphere.

Language: Английский

Citations

67
Review of Brown Carbon Aerosols in China: Pollution Level, Optical Properties, and Emissions DOI Creative Commons
Qiaoqiao Wang, Yuyi Zhou, Nan Ma

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2022, Volume and Issue: 127(16)

Published: Aug. 9, 2022

Abstract Brown carbon (BrC) has been recognized as an important contributor to global warming due its absorption of solar radiation with strong wavelength dependence. While early studies mostly consider biomass burning a major emission source, few recent have suggested coal combustion and vehicle exhaust contributors BrC emissions. Considering dominant consumption, large residential biofuel usage, the increasing number vehicles, pollution could result in remarkable regional climate effects China. This study gives overview sources, chemical composition properties BrC, focusing on categorization measurement techniques. The basic features China, including surface concentrations, column burden, sources associated absorbing are then summarized compared other countries. emissions well optical at 365 nm from primary China also provide more straightforward understanding light‐absorbing With detailed comparison existing publications, deeper insight into uncertainties measurements will improve effect BrC. review recommends key research areas for further investigation future.

Language: Английский

Citations

60
Impacts of severe residential wood burning on atmospheric processing, water-soluble organic aerosol and light absorption, in an inland city of Southeastern Europe DOI
Dimitris G. Kaskaoutis, Georgios Grivas,

Konstantina Oikonomou

et al.

Atmospheric Environment, Journal Year: 2022, Volume and Issue: 280, P. 119139 - 119139

Published: May 2, 2022

Language: Английский

Citations

45
Optical properties and simple forcing efficiency of the organic aerosols and black carbon emitted by residential wood burning in rural central Europe DOI Creative Commons
Andrea Cuesta-Mosquera, Kristina Glojek, Griša Močnik

et al.

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(4), P. 2583 - 2605

Published: Feb. 28, 2024

Abstract. Recent years have seen an increase in the use of wood for energy production over 30 %, and this trend is expected to continue due current crisis geopolitical instability. At present, residential burning (RWB) one most important sources organic aerosols (OAs) black carbon (BC), posing a significant risk air quality health. Simultaneously, as substantial aerosol source, RWB also holds relevance context radiative effects climate. While BC recognized its large light absorption cross-section, role OAs still under evaluation their heterogeneous composition source-dependent optical properties. Existing studies that characterize wood-burning emissions Europe primarily concentrate on urban background sites focus Despite rural areas, these locations received comparatively less attention. The present scenario underscores imperative improved understanding pollution, properties, subsequent connection climate impacts, particularly areas. We characterized atmospheric particles from central European site during wintertime village Retje Loški Potok, Slovenia, 1 December 2017 7 March 2018. experienced extremely high concentrations produced by near-ground temperature inversion. isolated location local made it ideal laboratory-like place characterizing with low influence non-RWB ambient conditions. mean mass OA were 35 µg m−3 (max⁡=270 m−3) 3.1 (max⁡=24 m−3), respectively. total particle number concentration (10–600 nm) was 9.9×103 cm−3 (max⁡=59×103 cm−3). coefficients at 370 880 nm measured AE33 Aethalometer 120 22 Mm−1 had maximum values 1100 180 Mm−1, campaign Potok significantly larger than reported several areas region populations extent sources. Here, considerable contributions brown (BrC) identified, reaching up 60 % 48 near-UV (370 blue (470 wavelengths. These are 3 times higher other impacted emissions. calculated cross-section Ångström exponent MACOA,370nm=2.4 m2 g−1, AAEBrC,370-590nm=3.9, Simple-forcing-efficiency (SFE) calculations performed sensitivity analysis evaluate impact study integrating properties campaign. SFE results show forcing capacity aerosols, more bright surfaces like snow, typical coldest season RWB. Our study's highly regarding impact. findings suggest there may be underestimation further investigation necessary.

Language: Английский

Citations

9
Brown carbon absorption and radiative effects under intense residential wood burning conditions in Southeastern Europe: New insights into the abundance and absorptivity of methanol-soluble organic aerosols DOI
Despina Paraskevopoulou, Dimitris G. Kaskaoutis, Georgios Grivas

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 860, P. 160434 - 160434

Published: Nov. 24, 2022

Language: Английский

Citations

38
Connecting the Light Absorption of Atmospheric Organic Aerosols with Oxidation State and Polarity DOI
Xiaotong Jiang, Dantong Liu, Qian Li

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(18), P. 12873 - 12885

Published: Sept. 9, 2022

The light-absorbing organic aerosol (OA) constitutes an important fraction of absorbing components, counteracting major cooling effect aerosols to climate. mechanisms in linking the complex and changeable chemistry OA with its properties remain be elucidated. Here, by using solvent extraction, ambient from urban environment was fractionated according polarity, which further nebulized online characterized compositions properties. Water extracted high-polar compounds a significantly higher oxygen carbon ratio (O/C) than methanol extracts. A transition O/C about 0.6 found, below above enhancement reduction absorptivity were observed increasing O/C, occurring on less polar high compounds, respectively. In particular, co-increase nitrogen elements suggests role nitrogen-containing functional groups enhancing (e.g., forming aromatics), while oxidation (O/C > 0.6) likely led fragmentation bleaching chromophores. results here may reconcile previous observations darkening or whitening chromophores brown carbon, parametrization has potential link changing polarity

Language: Английский

Citations

36
Enhancing effect of NO2 on the formation of light-absorbing secondary organic aerosols from toluene photooxidation DOI
Shijie Liu, Yiqian Wang,

Gehui Wang

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 794, P. 148714 - 148714

Published: June 27, 2021

Language: Английский

Citations

34
A Review on Brown Carbon Aerosol in China: From Molecular Composition to Climate Impact DOI

Xu-bing Cao,

Jiumeng Liu, Yuliang Wu

et al.

Current Pollution Reports, Journal Year: 2024, Volume and Issue: 10(2), P. 326 - 343

Published: Feb. 29, 2024

Language: Английский

Citations

6