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Keywords = Boyarsky stationary site

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18 pages, 16395 KiB  
Article
Study of Atmospheric Aerosol in the Baikal Mountain Basin with Shipborne and Ground-Based Lidars
by Sergei Nasonov, Yurii Balin, Marina Klemasheva, Grigorii Kokhanenko, Mikhail Novoselov and Ioganes Penner
Remote Sens. 2023, 15(15), 3816; https://doi.org/10.3390/rs15153816 - 31 Jul 2023
Cited by 7 | Viewed by 1511
Abstract
The results of long-term lidar studies of the peculiarities of the vertical structure of atmospheric aerosols over Lake Baikal are presented. The paper provides an analysis of data obtained over the period from 2010 to 2022. The studies were carried out under both [...] Read more.
The results of long-term lidar studies of the peculiarities of the vertical structure of atmospheric aerosols over Lake Baikal are presented. The paper provides an analysis of data obtained over the period from 2010 to 2022. The studies were carried out under both the background conditions and the extreme natural conditions associated with severe wildfires in Siberia. The parameters of the lidars used in regular summer expeditions to Lake Baikal are briefly described. The data analysis shows that the vertical structure of the aerosol in the lower troposphere up to 2000 m above Baikal in summer is often a stable structure of several aerosol layers tens to hundreds of meters thick. There can be no mixing of layers because the water in the lake is very cold and the aerosol does not rise to higher layers while the air is warming up during the day. The difference is shown between the spatiotemporal structures of aerosol plumes from local wildfires within the lake area and from distant sources. The Angstrom parameter and the aerosol optical depth are calculated for different atmospheric conditions: ηβ = 1.57 ± 0.16 and τ = 0.09 for background conditions; ηβ = 1.41 ± 0.07 and τ = 0.64 for the cases of the observation of smoke aerosol from distant wildfires; and ηβ = 1.05 ± 0.08 and τ = 0.25 for the cases of the observation of smoke aerosol from nearby wildfires. Full article
(This article belongs to the Special Issue Advances in Remote Sensing and Atmospheric Optics)
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7 pages, 3684 KiB  
Communication
Peculiarities of the Vertical Structure of Atmospheric Aerosol Fields in the Basin of Lake Baikal According to Lidar Observations
by Sergei Nasonov, Yurii Balin, Marina Klemasheva, Grigorii Kokhanenko, Mikhail Novoselov and Ioganes Penner
Atmosphere 2023, 14(5), 837; https://doi.org/10.3390/atmos14050837 - 8 May 2023
Cited by 5 | Viewed by 1457
Abstract
The paper briefly describes some features of the formation of aerosol fields in the water area of Lake Baikal in summer. The experimental data were collected during long-term expeditionary studies on the southeastern coast of the lake, at the Boyarsky station (51.84° N, [...] Read more.
The paper briefly describes some features of the formation of aerosol fields in the water area of Lake Baikal in summer. The experimental data were collected during long-term expeditionary studies on the southeastern coast of the lake, at the Boyarsky station (51.84° N, 106.06° E), with the use of a LOSA-M2 lidar designed at the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences (IAO SB RAS). A complex, layered, vertical structure of the atmospheric aerosol in the mountain basin is revealed. This is caused by peculiarities of the temperature and wind regimes at this site. The general pattern of the calculated autocorrelation matrices shows a good correlation in the range of 0–1000 m (the correlation coefficient is greater than 0.5). The aerosol layers in the lower-kilometer layer are closely related to each other and have a common origin. Full article
(This article belongs to the Special Issue Properties of Cirrus Cloud by Lidars: Observation and Theory)
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