Effect of urban submicron particles on single scattering albedo: the case study of high pollution event

Pauraitė, Julija; Minderytė, Agnė; Dudoitis, Vadimas; Plauškaitė, Kristina; Byčenkienė, Steigvilė

doi:10.1016/j.jqsrt.2022.108075

Cited by 4 publications

(3 citation statements)

References 48 publications

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“…LOA contributed 4% to the total OA mass concentration and 1% to the total PM1. The highest signals from the factor profile (m/z 29, 43, 58, and 86) did not match any other LOAs observed in previous studies of OA in Vilnius [30][31][32]. The LOA factor could be characterized as not atmospherically aged and with no biomass burning influence (Figure Secondary OA factor OOA had a characteristic peak at m/z 44 (CO +…”

Section: Oa Source Apportionmentmentioning

confidence: 67%

Assessment of Carbonaceous Aerosol Properties across an Urban Environment during the Cold Season

2023

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For air quality management it is becoming increasingly important to be able to assess the quantity and properties of biomass-burning-related aerosol. Due to different chemical compositions and morphologies, black carbon (BC) and brown carbon (BrC) demonstrate diverse optical properties as well as an impact on air quality. In this study, we analyzed the chemical composition and light-absorbing properties of carbonaceous aerosol at an urban background station during the residential heating season. In addition, BC and BrC levels were assessed in six different areas in the city characterized by different predominant domestic heating systems. Positive matrix factorization (PMF) and BrC attribution analysis revealed that BrC mainly consisted of biomass-burning-related organic aerosol (BBOA) (up to 95%). The mass absorption cross-section at 370 nm for BBOA factors varied between 1.41 m2g−1 and 2.63 m2g−1. The study of six different areas in the city showed that the input of BrC to the total light absorption coefficient within the city varied between 33% and 70%. In addition, the worst air quality was present in areas with numerous old wooden houses with outdated heating systems where significantly increased BC and BrC levels were observed.

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Section: Oa Source Apportionmentmentioning

confidence: 67%

Assessment of Carbonaceous Aerosol Properties across an Urban Environment during the Cold Season

2023

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“…Aerosol studies over Lithuania have so far been mostly focused on examining the physico-chemical properties, sources, and types of aerosol and their climate implications in the urban background environment [ [26] , [27] , [28] , [29] , [30] , [31] ]. Studies on BC source apportionment have shown that in Vilnius, 51–65% of BC mass concentration originates due to traffic emissions and fossil fuel combustion [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of long-range transport on black carbon source contribution and optical aerosol properties in two urban environments

Minderytė,

Ugboma,

Mirza Montoro

et al. 2023

Heliyon

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“…Carbonaceous particles may contribute to visibility degradation and radiative transfer through the atmosphere because of their chemical and catalytic properties . Carbonaceous materials, components of coal dust, are the major contributor to the extinction process directly by its optical properties and indirectly by the refractive index. − If the coal dust was assumed to be spherical in the whole data treatment, which was currently used widely to determine the extinction coefficient. Although several studies, both experimental and theoretical, − have been conducted on the estimation of an overall extinction coefficient for visibility, there have been few studies of visibility using the calculated model.…”

Section: Introductionmentioning

confidence: 99%

Research on the Effect of Extinction Characteristics of Coal Dust on Visibility

Yan

Liu

et al. 2022

ACS Omega

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A good knowledge of the reduction mechanism of visibility is fundamental to developing preventive strategies in coal mines. In this work, the Mie theory was selected for investigating the absorption and scattering of coal dust. A prediction model for evaluating the visibility was developed based on the extinction characteristics of coal dust. The optical properties have been discussed to simplify the model and clarify the relationships among the different wavelengths and diameters. Additionally, the variety of extinction coefficients can be reasonably used in guiding the calculated visibility under different conditions. The experimental results demonstrated that the reduction of visibility was attributed to the synergistic effect of the extinction of coal dust and droplet. For the field application of this prediction model, the relative errors of the calculated and measured visibility were 9.8 and 7.1% from models I and II, which reflected the small deviation between the two methods. The prediction model can accurately describe the visibility in mines due to coal dust pollution. The exploration results provide a significant reference for the development and application of air cleaning technology for increased visibility.

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Effect of urban submicron particles on single scattering albedo: the case study of high pollution event

Cited by 4 publications

References 48 publications

Assessment of Carbonaceous Aerosol Properties across an Urban Environment during the Cold Season

Assessment of Carbonaceous Aerosol Properties across an Urban Environment during the Cold Season

Impact of long-range transport on black carbon source contribution and optical aerosol properties in two urban environments

Research on the Effect of Extinction Characteristics of Coal Dust on Visibility

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