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Information × Registration Number 0225U004889, (0125U003158) , R & D reports Title Study of the effect of snow charging on chemical snow/atmosphere interactions using the results of field and laboratory experiments popup.stage_title Дослідження впливу електризації снігу на хімічні взаємодії сніг/атмосфера зa даними польових та лабораторних досліджень Head Tkachenko Kateryna Yurievna, Кандидат хімічних наук Registration Date 22-12-2025 Organization Institute of Geological Sciences of the NAS of Ukraine popup.description1 The aim of the research is to demonstrate the relationship between snow electrification under the influence of wind and the changes in its chemical composition and the emission of reaction products into the atmosphere, using the results of a field experiment conducted at the Akademik Vernadsky station during the 27th and 28th Ukrainian Antarctic Expeditions, along with model laboratory experiments. popup.description2 The report summarizes the results of a long-term field experiment conducted at the Akademik Vernadsky Station during the 27th and 28th Ukrainian Antarctic Expeditions using specially designed equipment (“Charged Snow Traps”), aimed at demonstrating the relationship between wind-induced snow electrification and changes in its chemical composition which is followed by the emission of reaction products into the atmosphere. Data obtained by the authors from a similar experiment carried out at the AWIPEV Station (Spitsbergen) were also included in the analysis. The analysis of the dataset collected during the 2023 overwintering period confirmed the preliminary conclusions drawn from the analysis of the first batch of samples collected during the 2022 overwintering. First, charged snow samples were found to be much more concentrated than background snow. Second, the presence of a relationship between snow charging and changes in its chemical composition was confirmed. All charged snow samples in all experiments were depleted in chloride, and this depletion increased with increasing concentration/sublimation of the samples. When water loss reached a threshold of approximately 80%, chloride loss increased sharply. A possible explanation was the occurrence of oxidation reactions involving this ion. Similar patterns were observed for sulfate, magnesium, and bromide, but they were less pronounced, as these ions have not only a marine origin but also local sources. Using data obtained from the analogous experiment at the AWIPEV Station, it was shown that the presence of sea ice was a necessary condition for changes in snow chemical composition during blowing snow events in coastal marine environments. Without sea ice, tribochemical electrification during blowing snow events was insufficient. Model laboratory experiments were conducted, which confirmed the formation of free radicals under tribochemical reaction conditions using ice as the working medium. Product Description popup.authors Yurii O. Negoda Kostiantyn K. Yaroshenko Yan M. Dovbii Anna Y. Mashyrova popup.nrat_date 2025-12-22 Close