Vertical Distribution of Alkanes in Atmospheric Aerosol in the Russian Arctic in September 2020

Arshinova, V. G.; Arshinov, Mikhail; Belan, B. D.; Davydov, Denis; Ivlev, G. A.; Kozlov, A. V.; Kozlov, A. S.; Rasskazchikova, T. M.; Simonenkov, D. V.; Tolmachev, Gennadii N.

doi:10.1134/s1024856021060312

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…As was shown by the authors of [13], according to the results of aircraft observations over Baikal, the effect of internal hollow air circulation was discovered. This effect is not associated with the main western transport and is manifested in the movement of air along the western coast from north to south and along the eastern coast from south to north.…”

Section: Discussionmentioning

confidence: 74%

“…Therefore, the atmospheric aerosol plays a key part in the formation of the chemical composition of the Baikal water and determines the Baikal water quality. Due to the gyral circulation in the Baikal mountain basin [13], impurities which enter the atmosphere can be transported throughout the water area, contributing to the pollution of the hydrosphere of the region. Moreover, pollutants not only from local sources but also from the vast territories of Siberia, China, and Mongolia can be accumulated in the mountain basin.…”

Section: Introductionmentioning

confidence: 99%

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Study of Atmospheric Aerosol in the Baikal Mountain Basin with Shipborne and Ground-Based Lidars

Nasonov,

Balin,

Klemasheva

et al. 2023

Remote Sensing

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The results of long-term lidar studies of the peculiarities of the vertical structure of atmospheric aerosols over Lake Baikal are presented. The paper provides an analysis of data obtained over the period from 2010 to 2022. The studies were carried out under both the background conditions and the extreme natural conditions associated with severe wildfires in Siberia. The parameters of the lidars used in regular summer expeditions to Lake Baikal are briefly described. The data analysis shows that the vertical structure of the aerosol in the lower troposphere up to 2000 m above Baikal in summer is often a stable structure of several aerosol layers tens to hundreds of meters thick. There can be no mixing of layers because the water in the lake is very cold and the aerosol does not rise to higher layers while the air is warming up during the day. The difference is shown between the spatiotemporal structures of aerosol plumes from local wildfires within the lake area and from distant sources. The Angstrom parameter and the aerosol optical depth are calculated for different atmospheric conditions: ηβ = 1.57 ± 0.16 and τ = 0.09 for background conditions; ηβ = 1.41 ± 0.07 and τ = 0.64 for the cases of the observation of smoke aerosol from distant wildfires; and ηβ = 1.05 ± 0.08 and τ = 0.25 for the cases of the observation of smoke aerosol from nearby wildfires.

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Section: Discussionmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Study of Atmospheric Aerosol in the Baikal Mountain Basin with Shipborne and Ground-Based Lidars

Nasonov,

Balin,

Klemasheva

et al. 2023

Remote Sensing

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“…The behavior of the vertical distribution of the wind speed and direction was described in [14], a study in which cells of the internal basin's air circulation were found in the atmospheric boundary layer based on the data of aircraft measurements over Baikal and balloon probe measurements taken directly at the Boyarsky station. Such a cell for the eastern coast is schematically shown in Figure 5c.…”

Section: Resultsmentioning

confidence: 99%

Peculiarities of the Vertical Structure of Atmospheric Aerosol Fields in the Basin of Lake Baikal According to Lidar Observations

et al. 2023

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The paper briefly describes some features of the formation of aerosol fields in the water area of Lake Baikal in summer. The experimental data were collected during long-term expeditionary studies on the southeastern coast of the lake, at the Boyarsky station (51.84° N, 106.06° E), with the use of a LOSA-M2 lidar designed at the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences (IAO SB RAS). A complex, layered, vertical structure of the atmospheric aerosol in the mountain basin is revealed. This is caused by peculiarities of the temperature and wind regimes at this site. The general pattern of the calculated autocorrelation matrices shows a good correlation in the range of 0–1000 m (the correlation coefficient is greater than 0.5). The aerosol layers in the lower-kilometer layer are closely related to each other and have a common origin.

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“…Nevertheless, sometimes a distinct fingerprint is observed in the semi-volatile range, where the even homologs are predominant. This pattern seems typical of sediments (Zrafi-Nouira et al 2008, Sikes et al 2009, Aloulou et al 2010, Jafarabadi et al 2018, Aghadadashi et al 2021, Arshinova et al 2021); nevertheless, it has been observed also in effluents from petroleum-contaminated zones and has been interpreted as a tracer of microorganisms including bacteria, fungi and spores (Stortini et al 2009;Kuhn et al 2010;Leider et al 2013). Hence, the molecular signature over the whole nC 14 -nC 40 range is more complex than as researchers currently believe and is not yet completely understood.…”

Section: N-alkanesmentioning

confidence: 96%

Molecular signatures of organic particulates as tracers of emission sources

Cecinato

Bacaloni

Romagnoli

et al. 2022

Environ Sci Pollut Res

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Chemical signature of airborne particulates and deposition dusts is subject of study since decades. Usually, three complementary composition markers are investigated, namely, (i) specific organic compounds; (ii) concentration ratios between congeners, and (iii) percent distributions of homologs. Due to its intrinsic limits (e.g., variability depending on decomposition and gas/particle equilibrium), the identification of pollution sources based on molecular signatures results overall restricted to qualitative purposes. Nevertheless, chemical fingerprints allow drawing preliminary information, suitable for successfully approaching multivariate analysis and valuing the relative importance of sources. Here, the state-of-the-art is presented about the molecular fingerprints of non-polar aliphatic, polyaromatic (PAHs, nitro-PAHs), and polar (fatty acids, organic halides, polysaccharides) compounds in emissions. Special concern was addressed to alkenes and alkanes with carbon numbers ranging from 12 to 23 and ≥ 24, which displayed distinct relative abundances in petrol-derived spills and exhausts, emissions from microorganisms, high vegetation, and sediments. Long-chain alkanes associated with tobacco smoke were characterized by a peculiar iso/anteiso/normal homolog fingerprint and by n-hentriacontane percentages higher than elsewhere. Several concentration ratios of PAHs were identified as diagnostic of the type of emission, and the sources of uncertainty were elucidated. Despite extensive investigations conducted so far, the origin of uncommon molecular fingerprints, e.g., alkane/alkene relationships in deposition dusts and airborne particles, remains quite unclear. Polar organics resulted scarcely investigated for pollution apportioning purposes, though they looked as indicative of the nature of sources. Finally, the role of humans and living organisms as actual emitters of chemicals seems to need concern in the future.

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Vertical Distribution of Alkanes in Atmospheric Aerosol in the Russian Arctic in September 2020

Cited by 6 publications

References 37 publications

Study of Atmospheric Aerosol in the Baikal Mountain Basin with Shipborne and Ground-Based Lidars

Study of Atmospheric Aerosol in the Baikal Mountain Basin with Shipborne and Ground-Based Lidars

Peculiarities of the Vertical Structure of Atmospheric Aerosol Fields in the Basin of Lake Baikal According to Lidar Observations

Molecular signatures of organic particulates as tracers of emission sources

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