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Abstract <p>Сlimate warming in the Arctic is several times faster than in other regions of the globe. This сan be the result of strengthening of feedbacks between climate and atmospheric composition. However, there are very few data on changes in the concentration of climatically active substances in this region. Therefore, to fill the gap in data on the vertical distribution of gas and aerosol composition of air over the Russian Arctic, an airborne survey of the atmosphere and water surface over all the Russian Arctic Ocean seas was performed with use of the Tu-134 Optik aircraft laboratory in September 2020. This paper analyzes the spatial distribution of gas and aerosol composition in the Arctic troposphere. It is shown that during the experiment, the CO<sub>2</sub> mixing ratio increased in the near-water and boundary layers and decreased in the free troposphere from west to east. The methane content in the near-water layer decreased in the same direction. Concentrations of CO, NO<sub><i>X</i></sub>, and SO<sub>2</sub> in the Russian Arctic were very low, which was typical for remote background areas. All aerosol fractions also showed a decrease in their content from west to east.</p>

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Complex Assessment of Air Composition over the Russian Arctic in September 2020

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月1日

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  • P. N. Antokhin,
  • V. G. Arshinova,
  • M. Yu. Arshinov,
  • B. D. Belan,
  • S. B. Belan,
  • D. K. Davydov,
  • G. A. Ivlev,
  • A. V. Kozlov,
  • T. M. Rasskazchikova,
  • D. E. Savkin,
  • D. V. Simonenkov,
  • T. K. Sklyadneva,
  • G. N. Tolmachev,
  • A. V. Fofonov

摘要

Abstract

Сlimate warming in the Arctic is several times faster than in other regions of the globe. This сan be the result of strengthening of feedbacks between climate and atmospheric composition. However, there are very few data on changes in the concentration of climatically active substances in this region. Therefore, to fill the gap in data on the vertical distribution of gas and aerosol composition of air over the Russian Arctic, an airborne survey of the atmosphere and water surface over all the Russian Arctic Ocean seas was performed with use of the Tu-134 Optik aircraft laboratory in September 2020. This paper analyzes the spatial distribution of gas and aerosol composition in the Arctic troposphere. It is shown that during the experiment, the CO2 mixing ratio increased in the near-water and boundary layers and decreased in the free troposphere from west to east. The methane content in the near-water layer decreased in the same direction. Concentrations of CO, NOX, and SO2 in the Russian Arctic were very low, which was typical for remote background areas. All aerosol fractions also showed a decrease in their content from west to east.