Atmospheric and Oceanic Optics最新文献

Vertical Profiles of Optical Turbulence and Estimates of Turbulence Outer Scale above the Baykal Astrophysical Observatory

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701197

A. Yu. Shikhovtsev, P. G. Kovadlo

{"title":"Vertical Profiles of Optical Turbulence and Estimates of Turbulence Outer Scale above the Baykal Astrophysical Observatory","authors":"A. Yu. Shikhovtsev, P. G. Kovadlo","doi":"10.1134/S1024856024701197","DOIUrl":"10.1134/S1024856024701197","url":null,"abstract":"The study of spatiotemporal structure of optical turbulence and the development of techniques for determining its characteristics at different altitudes in the atmosphere are of great importance for astronomical adaptive optics. Design of an adaptive optics system and technical characteristics of its components largely depend on optical turbulence along the line of sight of a telescope. In this paper, the technique for estimating the vertical profiles of air refractive index structure characteristic is modified. Based on ERA5 reanalysis data, this method was used to derive statistically representative vertical profiles of air refractive index structure characteristic and turbulence outer scale at the Large Solar Vacuum Telescope (LSVT) site. The problem of estimating the turbulence outer scale is discussed taking into account surface mast micrometeorological measurements and optical measurements at the LSVT. The results are the basis for constructing a multi-mirror adaptive optics system for the LSVT. In particular, the above profiles are important for further refinement of the optical conjugation heights. The suggested technique can also be used to describe optical turbulence over other ground-based solar telescopes.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 6","pages":"925 - 931"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data Assimilation Algorithm Based on the Sensitivity Operator for a Three-Dimensional Model of Transport and Transformation of Atmospheric Contaminants

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701082

A. V. Penenko, A. V. Gochakov, P. N. Antokhin

引用次数: 0

Tropospheric Ozone Concentration in Russia in 2023

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701112

V. V. Andreev, M. Yu. Arshinov, B. D. Belan, S. B. Belan, V. A. Gordyushkin, D. K. Davydov, V. I. Demin, N. V. Dudorova, N. F. Elansky, R. V. Ivanov, G. A. Ivlev, A. V. Kozlov, L. V. Konovaltseva, M. Yu. Korenskiy, S. N. Kotel’nikov, I. N. Kuznetsova, V. A. Lapchenko, E. A. Lezina, O. O. Marchenko, V. A. Obolkin, O. V. Postylyakov, V. L. Potemkin, D. E. Savkin, E. G. Semutnikova, I. A. Senik, E. V. Stepanov, G. N. Tolmachev, A. V. Fofonov, T. V. Khodzher, I. V. Chelibanov, V. P. Chelibanov, V. V. Shirotov, Yu. A. Shtabkin, K. A. Shukurov

{"title":"Tropospheric Ozone Concentration in Russia in 2023","authors":"V. V. Andreev, M. Yu. Arshinov, B. D. Belan, S. B. Belan, V. A. Gordyushkin, D. K. Davydov, V. I. Demin, N. V. Dudorova, N. F. Elansky, R. V. Ivanov, G. A. Ivlev, A. V. Kozlov, L. V. Konovaltseva, M. Yu. Korenskiy, S. N. Kotel’nikov, I. N. Kuznetsova, V. A. Lapchenko, E. A. Lezina, O. O. Marchenko, V. A. Obolkin, O. V. Postylyakov, V. L. Potemkin, D. E. Savkin, E. G. Semutnikova, I. A. Senik, E. V. Stepanov, G. N. Tolmachev, A. V. Fofonov, T. V. Khodzher, I. V. Chelibanov, V. P. Chelibanov, V. V. Shirotov, Yu. A. Shtabkin, K. A. Shukurov","doi":"10.1134/S1024856024701112","DOIUrl":"10.1134/S1024856024701112","url":null,"abstract":"The relevance of studying the dynamics of ozone concentration in the troposphere is due to the fact that in high concentrations it is a strong poison and a powerful oxidant that extremely negatively impacts both biological structures and the environment. Therefore, the dynamics of ozone concentration require urgent study in different areas of the Earth. Based on monitoring data, the paper examines the distribution of tropospheric ozone in Russia in 2023 in the surface air layer, as well as its vertical distribution based on the results of aircraft sensing. It is shown that the maximum permissible daily average concentrations established by the national hygienic standard, including maximal one-time, daily average, and annual average, were exceeded at all measurement sites. The current situation necessitates widespread public awareness of the results of monitoring and the development of environmental protection measures to reduce the concentration of ozone and its precursors in the surface air layer. The results of the work can be useful to specialists in the fields of atmospheric physics, climatology, and environmental protection, as well as to administrative bodies of different responsibility levels.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 6","pages":"849 - 864"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1024856024701112.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

System for Metal Vapor Active Medium Excitation for Non-Typical Lasing Modes 用于非典型激光模式的金属蒸汽活性介质激发系统

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701161

N. V. Karasev, V. O. Troitskii, V. A. Dimaki, M. V. Trigub

引用次数: 0

Optical Model of a Cirrus Cloud Consisting of Hollow Ice Hexagonal Columns for Lidar Applications

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S102485602470115X

A. V. Konoshonkin, N. V. Kustova, V. A. Shishko, D. N. Timofeev, I. V. Tkachev, E. Bakute, A. E. Babinovich, X. Zhu, Z. Wang

引用次数: 0

Femtosecond Laser Pulse Spectrum Transformation during Propagation in the Atmosphere

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701033

V. E. Prokop’ev, D. M. Lubenko

引用次数: 0

Variability of the Surface Electric Field under the Influence of Meteorological Conditions According to Observations in Tomsk

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701070

K. N. Pustovalov, P. M. Nagorskiy, M. V. Oglezneva, S. V. Smirnov

{"title":"Variability of the Surface Electric Field under the Influence of Meteorological Conditions According to Observations in Tomsk","authors":"K. N. Pustovalov, P. M. Nagorskiy, M. V. Oglezneva, S. V. Smirnov","doi":"10.1134/S1024856024701070","DOIUrl":"10.1134/S1024856024701070","url":null,"abstract":"The electric field of the atmosphere, along with electrical conductivity and ionization of air, is the main characteristic of atmospheric electricity, which is a set of electrical phenomena occurring in the atmosphere, including in clouds and precipitation. There is a close connection between the intensity (potential gradient) of the atmospheric electric field and the topography and landscape of an area and meteorological quantities. A disruption of the normal electric field, characteristic of fair-weather conditions, occurs during the formation and development of clouds, precipitation, thunderstorm, etc. In general, the variability of the electric field is determined by a number of individual or combined factors, both of global and regional (or local) character. Therefore, studying and understanding the functioning of the Global Electric Circuit and its local variability seems to be a relevant scientific problem, especially in the context of the modern climate change. The variability of the electric field potential gradient and meteorological quantities is analyzed in this work based on long-term observations in a large urban settlement. The analysis shows a pronounced dependence of the potential gradient on the wind direction in fair-weather conditions, especially in winter, associated, we believe, with aerosol transfer. We also found that the variability of the surface electric field, including seasonal and daily variations, under all meteorological conditions significantly differs from the variability under exceptionally fair-weather conditions. The results are in good agreement with similar studies at other observation sites located near large populated areas, and are of interest for simulating the state and variability of the Global Electric Circuit depending on various physical and geographical and meteorological conditions.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 6","pages":"815 - 821"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of Air Quality over Delhi during COVID-19 Lockdown Based on Remote Sensing Observations

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701215

S. Budakoti

{"title":"Study of Air Quality over Delhi during COVID-19 Lockdown Based on Remote Sensing Observations","authors":"S. Budakoti","doi":"10.1134/S1024856024701215","DOIUrl":"10.1134/S1024856024701215","url":null,"abstract":"Increasing concentrations of toxic pollutants and particulate matter are a major concern related to human health. The present work is structured into two phases; the first is aimed at understanding the O3–NOX–VOC sensitivity over Delhi during the lockdown period; the second phase examines the influence of dust-induced aerosol particles on air pollution during the lockdown period using satellite-derived and ground-based observations. The analysis of VOC–NOX–O3 shows that ozone generation across Delhi primarily lies in the VOC-sensitive regime (VOCs/NOX < 8). A decrease in VOCs/NOX values associated with an increase in surface ozone resulted from the lower values of NOX. Apart from ozone precursors (NOx and VOCs), meteorological variables also play a vital role in the generation of surface ozone. The two-way ANOVA test and partial correlation analysis show the surface temperature to be a dominant factor which limits surface ozone across Delhi. Dust-induced high aerosol loading (aerosol optical depth values of ~0.7 to 0.9) is observed during the first and last weeks of April. The presence of a shallow atmosphere and increased dust-induced aerosol particles peculiarly increase the content of particulate matter (PM2.5 and PM10) across Delhi. This counterintuitively leads to enhanced air pollution despite the improvement in air quality during the lockdown period.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 6","pages":"771 - 785"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synoptic Conditions for Ablation of the Sygyktinsky Glacier (Kodar Range)

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701148

O. P. Osipova, E. Yu. Osipov

{"title":"Synoptic Conditions for Ablation of the Sygyktinsky Glacier (Kodar Range)","authors":"O. P. Osipova, E. Yu. Osipov","doi":"10.1134/S1024856024701148","DOIUrl":"10.1134/S1024856024701148","url":null,"abstract":"The influence of synoptic conditions on a 700-hPa isobaric surface on meteorological conditions and melt of the Sygyktinsky glacier (Kodar Range) in 2021 ablation season was studied. Fifteen weather types were classified using the Jenkinson and Collison method; cyclones (24%) and anticyclones (20%) were found to be the most frequent types. A significant dependence of the meteorological conditions at the glacier on the weather type was revealed. High temperatures and low relative humidity and cloudiness are typical for anticyclonic types, and vice versa, for cyclonic types. The radiation regime at the glacier and its melting rate were found to depend on synoptic conditions. The maximal contribution to melting is made by anticyclonic weather types (44% of total ablation), and the minimal, by cyclonic types (26%). The net radiation of the glacier is 2–2.5 times higher and the ablation rate is 1.6–1.8 times higher in anticyclones than in cyclones. The differences between the fluxes of energy spent for glacier melting under different weather conditions are explained by cloudiness. The different atmospheric circulation regimes over the Kodar significantly affected the deglaciation of the Kodar glaciers in recent decades. The results of our work will help to predict future climate changes in mountain glaciers.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 6","pages":"890 - 895"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of the “Cloud Bow” Effect in SEVIRI Measurements on the Retrieval of the Diurnal Cycle of Land–Sea Cloud Liquid Water Path Contrast in Northern Europe

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Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI: 10.1134/S1024856024701094

V. S. Kostsov, D. V. Ionov, A. B. Andryukova, E. P. Ryabushko

{"title":"Influence of the “Cloud Bow” Effect in SEVIRI Measurements on the Retrieval of the Diurnal Cycle of Land–Sea Cloud Liquid Water Path Contrast in Northern Europe","authors":"V. S. Kostsov, D. V. Ionov, A. B. Andryukova, E. P. Ryabushko","doi":"10.1134/S1024856024701094","DOIUrl":"10.1134/S1024856024701094","url":null,"abstract":"The information on the cloud liquid water path (LWP) is required for many applications including global and regional climate modelling, weather forecasting, and hydrological cycle modelling. The results of derivation of the land–sea LWP contrast from LWP measurements with the satellite SEVIRI (Spinning Enhanced Visible Infra-Red Imager) instrument over land and water bodies in northern Europe are presented. The study of the diurnal cycle of the LWP contrast for some water bodies discovered two maxima nearly symmetrical about the noon UTC. They were observed in most cases at measurement points in the Gulf of Riga and in the Gulf of Finland in the Baltic Sea. Presumably, those maxima were artefacts of observations caused by the so-called “cloud bow effect.” Calculations of a scattering angle for the satellite measurements at these points confirm this conclusion. The problems of data filtering and analyzing in the cases of manifestation of this disturbing effect are discussed. An approach to data analysis is suggested. This approach and the results can be used to assess the quality of LWP measurements by SEVIRI in various regions of the globe.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 6","pages":"833 - 841"},"PeriodicalIF":0.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0