Dispersal and morphological characteristics of smoke particulate emission from fires in the boreal forests of Siberia

Samsonov, Yu. N.; Belenko, O. A.; Иванов, В. А.

doi:10.1134/s1024856010060084

Cited by 13 publications

(4 citation statements)

References 10 publications

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“…According to experts, about 20% of annual emissions from biomass burning in the world are accounted for by forest fires occurring in the boreal regions of Russia, Canada, and Alaska [19]. According to satellite observations, fires occur annually on an area of 10-14 million hectares and in the forest and forest-steppe zones of Siberia [20]. Air quality impacts from forest fires are not only due to emissions of primary pollutants such as greenhouse gases, photochemically active compounds, and small and large particulate matter, but also due to secondary pollutants (e.g., ground-level ozone O3, secondary organic aerosol (SOA)).…”

Section: Resultsmentioning

confidence: 99%

Results of route measurements of aerosol and gas impurities in the water area of Lake Baikal

Жамсуева

Ходжер

Zayakhanov

et al. 2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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The results of the experimental study of the concentration of small gas impurities and aerosol dispersion composition in the atmosphere under Lake Baikal in September 2021 are presented. Almost all the route observed short bursts in the concentration of gas components and aerosol due to the proximity to the continental sources of emissions. In spite of unfavorable weather conditions, a high share of anthropogenic components in the atmosphere was observed in the area of Listvyanka port. There was a sharp increase in the concentration of ozone and sulfur dioxide in the area of Aya Bay in the night hours due to displacement and destruction of the anticyclone in the adjacent coastal zone.

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Section: Resultsmentioning

confidence: 99%

Results of route measurements of aerosol and gas impurities in the water area of Lake Baikal

Жамсуева

Ходжер

Zayakhanov

et al. 2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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“…The results of this paper and some other works [20,21] indicate that the smokes from forest fires play an important role in the dynamics of the optical proper ties of the atmosphere on the whole, and in the supply of black carbon to the atmosphere in particular. We note that black carbon, being an important aerosol constituent, determines the absorbing properties of the atmospheric aerosol in the shortwave wavelength range and the variations in such a radiatively signifi cant characteristic as the single aerosol scattering albedo, used for aerosol radiative forcing estimations.…”

Section: Determination Of the Microphysical Characteristics Of Mixed mentioning

confidence: 90%

On time dynamics of the complex refractive index and particle microstructure according to data of spectronephelometer measurements in mixed-composition smokes

Rakhimov¹,

Kozlov²,

Shmargunov³

2012

Atmos Ocean Opt

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The specific features in the dynamics of the complex refractive index (CRI) are studied for three particle fractions during aging of mixed composition wood smokes, generated due to simultaneous particle emission from two sources in the regimes of pyrolysis and flaming combustion, for two days. The initial stage is characterized by the generation of smoke in which the imaginary part of the particle refractive index χ decreases, on average, by a factor of 600 with the growth of particle size. When smoke is aged for a long time, χ decreases (by a factor of 1.2) for ultrafine black carbon particles, simultaneously increasing for moderately (by a factor of 1.5) and coarsely (by a factor of 4.7) dispersed particles. This suggests that the dynamics of microphysical smoke composition, at all stages of its existence, is mainly determined by the coagulation driven penetration of black carbon from the nanometer size range toward the region of larger particle sizes. Numerical experiment showed that the inverse problem during aging of mixed composition smokes can be solved correctly only using CRI values strictly corresponding to a given time instant. Attempts to solve the inverse problem using some time invariable CRI values lead to a several fold increase in the discrepancy between the measured and retrieved optical characteristics versus the 6-10% discrepancy for the actual CRI values. Test ing of the three fraction method for solving the inverse problem with the help of modeled aerosol with a known CRI (ethylene glycol) showed that our approach ensured high accuracy retrieval of the true CRI for the optically active particles in a moderately dispersed size range. Using the three fraction method decreases the discrepancy, on average, by a factor of two versus the traditional one fraction method (assuming that par ticles are homogeneous in the nature).

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“…According to experts, about 20% of annual emissions from biomass burning in the world are accounted for by forest fires occurring in the boreal regions of Russia, Canada, and Alaska [26]. According to satellite observations, fires occur annually on an area of 10-14 million hectares and in the forest and forest-steppe zones of Siberia [27]. Air quality impacts from forest fires are not only due to emissions of primary pollutants such as greenhouse gases, photochemically active compounds, and small and large particulate matter, but also due to secondary pollutants (e.g., ground-level ozone O 3 , secondary organic aerosol (SOA)).…”

Section: Introductionmentioning

confidence: 99%

Spatial-Temporal Variability of Small Gas Impurities over Lake Baikal during the Forest Fires in the Summer of 2019

et al. 2020

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Lake Baikal—a unique ecosystem on a global scale—is undoubtedly of great interest for a comprehensive study of its ecosystem. In recent years, one of the most significant sources of atmospheric pollution in the Baikal region was the emission of smoke aerosol and trace gases from forest fires, the number of which is increasing in the region. The transport and accumulation of aerosol and small gas impurities over water area of Lake Baikal is observed every summer due to forest fires occurring in the boreal forests of Siberia. The atmosphere above the lake covers a huge area (31,500 km2) and is still a little-studied object. This article presents the results of experimental studies of ground-level ozone, sulfur dioxide, and nitrogen oxides in the atmosphere over Lake Baikal, carried out on a research vessel during the boreal forest fires in Siberia in the summer of 2019.

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Dispersal and morphological characteristics of smoke particulate emission from fires in the boreal forests of Siberia

Cited by 13 publications

References 10 publications

Results of route measurements of aerosol and gas impurities in the water area of Lake Baikal

Results of route measurements of aerosol and gas impurities in the water area of Lake Baikal

On time dynamics of the complex refractive index and particle microstructure according to data of spectronephelometer measurements in mixed-composition smokes

Spatial-Temporal Variability of Small Gas Impurities over Lake Baikal during the Forest Fires in the Summer of 2019

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