We discuss the specific features of the spatiotemporal variations in aerosol characteristics in the Arctic atmosphere on the routes of 89th and 90th cruises of RV Akademik Mstislav Keldysh (September – November 2022). We present the average (over the period of expeditions) values of the studied characteristics: the aerosol optical depth of the atmosphere, the aerosol and black carbon concentrations, as well as the chemical composition of aerosol samples, i.e., the concentrations of the main elements, the concentrations of organic and elemental carbon, and the isotopic composition of carbon. Based on multiyear (2013-2022) data from expedition measurements, we present the results from a statistical generalization of aerosol characteristics for the atmosphere of the Kara Sea and southern part of the Barents Sea.
The results of measurements of the organic and elemental carbon concentration, the carbon isotope composition in atmospheric aerosol samples collected during the marine expeditions – the 83rd and 84th cruises of the RV Akademik Mstislav Keldysh are presented in this paper. The measurements were carried out from June to August 2021 mainly in the waters of the Kara Sea (83rd cruise) and Barents Sea (84th cruise). It is shown that the aerosol in the northern part of the Barents Sea is formed due to anthropogenic and natural sources, while the background aerosol prevails over the Kara Sea.
The results of experimental studies are presented on the variability of mass concentration of organic and element carbon, of carbon isotope composition, and of elemental content in aerosol composition at the polar station “Cape Baranov” (the Severnaya Zemlya archipelago) in 2018. Statistical and comparative analysis of expeditionary data, together with the backward air mass trajectories analysis, makes it possible to estimate the degree of Arctic aerosol pollution, and the role of natural and anthropogenic sources in the formation of high latitude aerosol substances.
The study of the carbon isotope composition of atmospheric aerosol in the Arctic zone is of great importance for the pyrogenic carbon sources identification. Atmospheric aerosol samples were collected in the Arctic at the research station Ice Base Cape Baranov (the Severnaya Zemlya archipelago) from April 2018 to November 2019 and at Barentsburg (the Svalbard archipelago) from December 2018 to July 2019 and from November 2019 to February 2020. The carbon isotope composition (δ13C value) was determined in aerosol samples to identify the sources of carbonaceous aerosols. For Ice Base Cape Baranov the average δ13C value (–27.5±0.5%) of total carbon of the winter (2018-2019) aerosols lower than the average δ13C value (–26.8±0.8%) of the spring-summer (2019) aerosols. The average δ13С values of the atmospheric aerosols in Barentsburg showed that the δ13С value was –26.9‰ in winter, the δ13С value was –26.3‰ and – 26.1‰ in spring and summer, respectively. The increased δ13C values in spring and summer (2019) at the Ice Base Cape Baranov can likely be explained by the input of soot aerosol, the source of which is boreal forest fires at the Krasnoyarsk Region and the Republic of Sakha. According to the backward trajectories of the air masses, the transfer of soot particles to Barentsburg was carried out from Europe, North America and over the Arctic Ocean, and to the Severnaya Zemlya from the continental part of Krasnoyarsk Region and the Republic of Sakha.
The work reports the results of the measurements of particulate matter (PM), organic (OC) and elemental (EC) carbon mass concentrations, and carbon isotope composition (δ13С) in atmospheric aerosol sampled along the route of the research vessel “Academician Mstislav Keldysh” (71 voyage). The measurements were carried out over the Baltic Sea – the North Sea – the North Atlantic – the Norwegian Sea – the Barents Sea from June to August 2018. The increased OC, EC concentrations and the high δ13С value in the samples collected off the coast of Greenland are shown to be not due to marine origin, but due to the transfer of atmospheric aerosol formed in Canada during biomass burning (forest fires).
In recent decades increasing attention is paid to biomonitoring of air quality. In this paper epiphytic mosses and lichens were chosen as bioindicators to estimate the level of atmospheric pollution. The paper presents the results of elemental analysis, as well as analysis of the carbon and nitrogen stable isotope ratios in mosses and lichens of Tomsk and Prokopyevsk (Russia, Western Siberia). The mean values of lichens δ13C for Prokopyevsk and Tomsk are ca. –26‰ and –27‰, respectively. The mean values of δ13C in mosses are similar for both cities (ca. –30‰). However, δ13C of some mosses samples collected in Prokopyevsk have lighter values (ca. –34‰), probably due to the mine methane influence. The mean δ15N values for mosses and lichens for Tomsk (+2.1 and –1.3‰, respectively) is heavier compared to the mean δ15N values for Prokopyevsk (δ15N for mosses = –1‰ and δ15N for lichens = –5‰). Based on this, it can be concluded that Tomsk has a large anthropogenic load in terms of emissions of nitrogen-containing compounds.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.