Experimental studies of aerosol and gas admixtures in the near layer of the atmosphere of Lake Baikal (ship expedition, September, 2021)
G.S. Zhamsueva1, T.V. Khodzher2, Yu.S. Balin3, A.S. Zayakhanov1, V.V. Tsydypov1, I.E. Penner3, S.V. Nasonov3, I.I. Marinayte2
1Institute of Physical Material Science of the Siberian Branch of the RAS, Ulan-Ude, Russia
2Limnological Institute of the Siberian Branch of the RAS, Irkutsk, Russia
3V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: Lake Baikal, tropospheric ozone, nitrogen oxides, aerosol, lidar, forest fires, RV "Academician V.А. Koptyug"
Abstract
The paper presents the results of complex experimental studies of gas impurities and the vertical structure of aerosol in the atmosphere over Lake Baikal in September 2021, using the research vessel (RV) "Academician V.A. Koptyug". Measurements of gaseous impurities in the near-air layer were carried out using local control means - chemiluminescent gas analyzers. The sounding of aerosol fields was carried out using a multi-frequency polarization aerosol-Raman lidar "LOSA-A2". Compared to previous expeditions, in 2021, low concentrations of gaseous impurities and aerosols, close to the background ones, were recorded. The analysis showed that the main contribution to atmospheric pollution was made by nearby local sources located near the coastal zone of the lake.
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