scholarly journals Shipborne And Ground-Based Lidar Monitoring of the Atmosphere Over the Lake Baikal in 2018

2020 ◽  
Vol 237 ◽  
pp. 02032
Author(s):  
Yurii S. Balin ◽  
Marina G. Klemasheva ◽  
Grigorii P. Kokhanenko ◽  
Sergey V. Nasonov ◽  
Ioganes E. Penner
Keyword(s):  
Spatial Structure ◽  
Lake Baikal ◽  
Forest Fires ◽  
Atmospheric Pollution ◽  
Atmospheric Aerosol ◽  
Baikal Region ◽  
Physical Models ◽  
The South ◽  
Ground Based Lidar ◽  
Background Area

The paper presents the results of studies aimed at the analysis and assessment of atmospheric pollution over the Lake Baikal in the summer. This information is necessary to create physical models of the formation and transfer of atmospheric aerosol fields, taking into account the physical and geographical features of the Baikal region. Measurements were carried out by a lidar «LOSA-A2» installed on the scientific-research vessel «Academician V.A. Koptyug». The vessel’s route passed along the South, Middle and Northern Baikal, from July 15, 2018 to July 26, 2018. At the same time, observations were conducted using lidar «LOSA-M2». It was located in the background area at Boyarsky stationary site (51.84° N, 106.06° E), in the south-eastern part of the lake. The results of changes in the spatial structure of atmospheric aerosol fields in background conditions and during forest fires are shown.

Principles of regionalization of the Baikal region on the hazardous geomorphological processes for the purpose of mapping

2018 ◽  
Vol 932 (2) ◽  
pp. 22-35
Author(s):  
S.B. Kuzmin ◽  
D.A. Lopatkin
Keyword(s):  
Lake Baikal ◽  
Russian Federation ◽  
Baikal Region ◽  
Improved Method ◽  
The South ◽  
Baikal Basin ◽  
Lake Baikal Basin ◽  
South Siberia ◽  
The Russian Federation ◽  
Geomorphological Processes

Mapping of hazardous geomorphological processes in the Baikal Region and its ecological and geomorphological zoning was carried out on the basis of the improved method, developed earlier by the authors. Baikal Region includes the subjects of the Russian Federation in the South Siberia and Republic of Mongolia within the boundaries of the Lake Baikal Basin. The basis of zoning are

scholarly journals Studies of the Dispersed Composition of Atmospheric Aerosol and Its Relationship with Small Gas Impurities in the Near-Water Layer of Lake Baikal Based on the Results of Ship Measurements in the Summer of 2020

Atmosphere ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 139
Author(s):  
Galina Zhamsueva ◽  
Alexander Zayakhanov ◽  
Tamara Khodzher ◽  
Vadim Tcydypov ◽  
Tumen Balzhanov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Forest Fires ◽  
Atmospheric Aerosol ◽  
Anthropogenic Impact ◽  
Trace Gases ◽  
Experimental Studies ◽  
Water Layer ◽  
Water Area ◽  
Tourist Infrastructure ◽  
Vast Area

The atmosphere over Lake Baikal covers a vast area (31,500 square meters) and has more significant differences in the composition and variability of gaseous and aerosol components in atmospheric air than in coastal continental areas and is still a poorly studied object. In recent years, the anthropogenic impact on the ecosystem of Lake Baikal has been increasing due to the development of industry in the region, the expansion of tourist infrastructure and recreational areas of the coastal zone of the lake. In addition, one of the significant sources of atmospheric pollution in the Baikal region is the emissions of smoke aerosol and trace gases from forest fires, the number of which is increasing in the region. This article presents the results of experimental studies of the dispersed composition of aerosols and gas impurities, such as ozone, sulfur dioxide, and nitrogen oxides during route ship measurements in the water area of Lake Baikal in the summer of 2020.

The first record of Gyalideopsis helvetica (Graphidaceae, lichenized Ascomycota) for Russia from the southern part of Lake Baikal Region

2015 ◽  
Vol 49 ◽  
pp. 282-288 ◽  
Author(s):  
I. N. Urbanavichene
Keyword(s):  
Lake Baikal ◽  
Baikal Region ◽  
First Record ◽  
Identification Key ◽  
Lake Baikal Region ◽  
First Time

Until recently only two species of Gyalideopsis (G. piceicola and G. alnicola) were known from very few localities in Russia. Gyalideopsis helvetica is reported for the first time for Russia from the southern part of Baikal area (KhamarDaban Range, Baikalsky Zapovednik). Description of the collected specimen and its comparison with the literature data are provided; morphology, ecology and distribution of G. helvetica are discussed. The hyphophores of G. helvetica are recorded and described for the first time. An identification key to Gyalideopsis species known in Russia is provided.

The influence and importance of daily weather conditions in the supply of chloride, sulphate and other ions to fresh waters from atmospheric precipitation

1958 ◽  
Vol 244 (1236) ◽  
pp. 140-140
Keyword(s):  
Sulphuric Acid ◽  
Atmospheric Pollution ◽  
Natural Waters ◽  
Sea Water ◽  
Atmospheric Precipitation ◽  
Weather Conditions ◽  
Sea Spray ◽  
Lake District ◽  
The South ◽  
Soil Weathering

This paper deals with chemical analyses for hydrogen, sodium, potassium, calcium, chloride, sulphate and nitrate ions in daily precipitation samples collected in the English Lake District, and examines the correlations of these analyses with ( a ) one another, ( b ) the amount of precipitation, ( c ) wind direction, ( d ) wind velocity, and ( e ) temperature. Highly significant correlations are found between estimates for H, K, Ca, NO 3 and SO 4 ions, and atmospheric pollution appears to supply much of the sulphate in Lake District rain, since it comes largely as sulphuric acid from the south-east. The correlation between Na and Cl is also extremely close, with the proportion between the two ions very similar to that in sea water. Since these two ions are supplied mainly from the south-west, in amounts which are greatly increased by high winds, sea spray may be inferred as the principal source. Nevertheless, evidence is presented for some small supply from atmospheric pollution, and it is furthermore suggested that mixed droplets of sea salt and sulphuric acid may, upon abstraction of moisture by freezing or evaporation, release gaseous hydrogen chloride to the air and so alter the balance of Na and Cl in precipitation. The supply of Na and Cl is also considerably higher in cold than in warm weather, a phenomenon possibly connected with stormier conditions and greater evaporation over the Atlantic Ocean. The atmospheric contribution of ions to natural waters via precipitation is shown to be of great importance, in particular to bog pools, to upland tarns on hard rocks, and to the soil solution in highly organic mor humus layers overlying heavily leached hillside soils. Sodium and chloride in most surface waters appears to be almost wholly supplied by sea spray, while calcium and magnesium bicarbonates are the main products of soil weathering. A net loss of rain acids is evident in all soil waters, although some may be more acid than normal rain water owing to considerable concentration by evaporation. The soil waters are relatively rich in potassium, presumably supplied from decaying vegetation.

Persistent Organochlorine Residues in Air, Water, Sediments, and Soils from the Lake Baikal Region, Russia

1995 ◽  
Vol 29 (3) ◽  
pp. 792-801 ◽  
Author(s):  
Hisato. Iwata ◽  
Shinsuke. Tanabe ◽  
Kozo. Ueda ◽  
Ryo. Tatsukawa
Keyword(s):  
Lake Baikal ◽  
Baikal Region ◽  
Persistent Organochlorine ◽  
Lake Baikal Region

scholarly journals Environmental controls on the increasing GPP of terrestrial vegetation across northern Eurasia

2016 ◽  
Vol 13 (1) ◽  
pp. 45-62 ◽  
Author(s):  
P. Dass ◽  
M. A. Rawlins ◽  
J. S. Kimball ◽  
Y. Kim
Keyword(s):  
Forest Fires ◽  
Environmental Control ◽  
Negative Impact ◽  
Positive Impact ◽  
Terrestrial Ecosystems ◽  
Northern Eurasia ◽  
Terrestrial Vegetation ◽  
The South ◽  
Environmental Controls ◽  
Significant Negative Impact

Abstract. Terrestrial ecosystems of northern Eurasia are demonstrating an increasing gross primary productivity (GPP), yet few studies have provided definitive attribution for the changes. While prior studies point to increasing temperatures as the principle environmental control, influences from moisture and other factors are less clear. We assess how changes in temperature, precipitation, cloudiness, and forest fires individually contribute to changes in GPP derived from satellite data across northern Eurasia using a light-use- efficiency-based model, for the period 1982–2010. We find that annual satellite-derived GPP is most sensitive to the temperature, precipitation and cloudiness of summer, which is the peak of the growing season and also the period of the year when the GPP trend is maximum. Considering the regional median, the summer temperature explains as much as 37.7 % of the variation in annual GPP, while precipitation and cloudiness explain 20.7 and 19.3 %. Warming over the period analysed, even without a sustained increase in precipitation, led to a significant positive impact on GPP for 61.7 % of the region. However, a significant negative impact on GPP was also found, for 2.4 % of the region, primarily the dryer grasslands in the south-west of the study area. For this region, precipitation positively correlates with GPP, as does cloudiness. This shows that the south-western part of northern Eurasia is relatively more vulnerable to drought than other areas. While our results further advance the notion that air temperature is the dominant environmental control for recent GPP increases across northern Eurasia, the role of precipitation and cloudiness can not be ignored.

Assessing the acidification risk in the Lake Baikal region

2006 ◽  
Vol 22 (1) ◽  
pp. 1-11 ◽  
Author(s):  
M. Yu. Semenov ◽  
T. V. Khodzher ◽  
V. A. Obolkin ◽  
V. M. Domysheva ◽  
L. P. Golobokova ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Baikal Region ◽  
Lake Baikal Region

Optimal Number and Location of Watchtowers for Immediate Detection of Forest Fires in a Small Island

2017 ◽  
Vol 8 (4) ◽  
pp. 1-19 ◽  
Author(s):  
Stavros Sakellariou ◽  
Fani Samara ◽  
Stergios Tampekis ◽  
Olga Christopoulou ◽  
Athanassios Sfougaris
Keyword(s):  
Early Detection ◽  
Spatial Structure ◽  
Forest Fires ◽  
Critical Time ◽  
Spatial Optimization ◽  
Optimal Number ◽  
Small Island ◽  
Environmental Consequences ◽  
Fire Ignitions ◽  
Visible Area

A crucial factor for prevention and immediate confrontation of destructive fires and their socioeconomic and environmental consequences constitutes the early detection and spatial localization of fire ignitions, so that the firefighting forces to be activated and act within the critical time of response. Thus, principal objective of the paper constitutes the spatial optimization of the most effective locations of watchtowers developing a constructive network for the immediate and early detection of forest fires. This optimization involves the exploration of the fewest locations for watchtowers with the maximum visible area and reduced degree of overlapping. The results highlighted 4 groups of watchtowers (20 observers in total) determining the optimum locations. The total visibility amounted to 70% of the island, while the visibility percentages per land cover are variable, since they are depended on the spatial structure of them. Definitely, the final selection of the final number and the spatial structure of the watchtowers purely constitute decisions of political nature and will.

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