Atmospheric and Oceanic Optics最新文献_第5页

Efficiency of Resonance and Cascade Schemes of Fluorescence Excitation in Atoms in Mesosphere for Laser Guide Star Creation. Part II. Iron Atoms 激光导星形成中中间层原子荧光激发的共振效率和级联方案。第二部分。铁原子

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700186

S. M. Bobrovnikov, L. A. Bolbasova, E. V. Gorlov, V. I. Zharkov, V. P. Lukin

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The Relation of Density and Temperature Fluctuations to the Kinetic Energy of Turbulence in the Atmospheric Boundary Layer 大气边界层湍流动能与密度和温度波动的关系

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700034

V. P. Yushkov

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Optical Model of Cirrus Clouds with Preferentially Oriented Particles for Lidar Applications 具有优先取向粒子的卷云光学模型在激光雷达中的应用

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700113

A. V. Konoshonkin, N. V. Kustova, V. A. Shishko, D. N. Timofeev, A. E. Babinovich, Xuanhao Zhu, Zhenzhu Wang, Dong Liu, Yingjian Wang

{"title":"Optical Model of Cirrus Clouds with Preferentially Oriented Particles for Lidar Applications","authors":"A. V. Konoshonkin, N. V. Kustova, V. A. Shishko, D. N. Timofeev, A. E. Babinovich, Xuanhao Zhu, Zhenzhu Wang, Dong Liu, Yingjian Wang","doi":"10.1134/S1024856025700113","DOIUrl":"10.1134/S1024856025700113","url":null,"abstract":"Cirrus clouds are currently under close attention since they play an important role in the formation of the Earth’s climate. They are mainly studied through laser sounding of the atmosphere. The interpretation of laser sounding data requires an adequate optical model of cirrus clouds. However, most existing optical models are developed assuming a random spatial orientation of particles, which, according to recent experimental data, is often inaccurate. We suggest an optical model of cirrus clouds which considers the preferential horizontal orientation of particles within a cloud. The model includes ideal hexagonal plates and columns and hollow columns as quasi-horizontally oriented particles; it additionally incorporates hexagonal plates and columns, droxtalls and bullets, irregularly shaped particles, and aggregates of such particles as randomly oriented particles. The results are crucial for developing lidar data interpretation algorithms for studying cirrus clouds.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"308 - 316"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1024856025700113.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165606","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}

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Dynamic Phenomena in Stratospheric and Mesospheric Ozone of Polar Atmosphere in February–March 2023 2023年2 - 3月极地大气平流层和中间层臭氧动力现象

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700071

Yu. Yu. Kulikov, V. I. Demin, V. M. Demkin, A. S. Kirillov, A. V. Losev, V. G. Ryskin

{"title":"Dynamic Phenomena in Stratospheric and Mesospheric Ozone of Polar Atmosphere in February–March 2023","authors":"Yu. Yu. Kulikov, V. I. Demin, V. M. Demkin, A. S. Kirillov, A. V. Losev, V. G. Ryskin","doi":"10.1134/S1024856025700071","DOIUrl":"10.1134/S1024856025700071","url":null,"abstract":"Microwave measurements of ozone were performed in the middle atmosphere over Apatity (67° N, 33° E) in winter 2022/2023, during a period of high solar activity in solar cycle 25, with the use of a mobile ozonometer with an operating frequency of 110.8 GHz. The device had a single-sideband noise temperature of 2500 K, which made it possible to measure variations in O3 in the middle atmosphere with a 15-min resolution. The ozone vertical profiles at altitudes of 22–60 km were retrieved and compared with MLS/Aura satellite vertical profiles of ozone and temperature. The behavior of ozone in February–March 2023 is analyzed. Ozone variations took place during the sudden stratospheric warming (SSW) which occurred in mid-February and was accompanied by an extraordinary increase in the total ozone content (TOC) from 240 to 500 DU. The limits of ozone variations at altitudes of 25, 40, and 60 km are given. The effect of the strong geomagnetic disturbance (storm), which took place on March 23–24, on the daily variations in ozone at an altitude of 60 km is discussed.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"283 - 289"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164905","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

Classification of Atmospheric Aerosols based on Photometric Measurements and Empirical Regional Model MUrA 基于光度测量和经验区域模式MUrA的大气气溶胶分类

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700046

E. S. Nagovitsyna, A. P. Luzhetskaya, V. A. Poddubny

{"title":"Classification of Atmospheric Aerosols based on Photometric Measurements and Empirical Regional Model MUrA","authors":"E. S. Nagovitsyna, A. P. Luzhetskaya, V. A. Poddubny","doi":"10.1134/S1024856025700046","DOIUrl":"10.1134/S1024856025700046","url":null,"abstract":"Classification of atmospheric aerosols is significant in evaluating the influence of aerosols on the climate system, identifying aerosol sources, and improving aerosol satellite retrieval algorithms. There are different ways of classifying aerosol particles, but most of them do not take into account regional characteristics. We suggest an approach to classification of main aerosol types by the spectral values of aerosol optical depth by the method of k-medians based on archival AERONET photometric observations in the Middle Urals. The spectral values of extinction coefficients calculated with the use of MOPSMAP software from data of MUrA regional aerosol model and CALIPSO global model were defined as initial centers of clusters. Five aerosol types were identified: dust, clean continental (background), polluted continental/smoke, polluted dust, and elevated smoke. The analysis of data for 2004–2012 has shown clean continental and dust aerosols to be most common in the Middle Urals (26 and 25% of observations, respectively), and the percentage of polluted continental/smoke aerosol to be 20%. The suggested approach makes it possible to determine the predominant aerosol type at an observation site, thus significantly supplementing the information received by ground-based spectral photometric measurements.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"259 - 265"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164910","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}

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Influence of Inhomogeneous Optical Radiation Propagation Media on the Accuracy of Space Depth Mapping by Multizone Active-Pulse Television Measuring Systems 非均匀光辐射传播介质对多区有源脉冲电视测量系统空间深度成图精度的影响

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700022

I. D. Musikhin, V. V. Kapustin, A. Movchan, E. S. Poznakharev, M. I. Kuryachy, A. A. Tislenko, S. A. Zabuga

{"title":"Influence of Inhomogeneous Optical Radiation Propagation Media on the Accuracy of Space Depth Mapping by Multizone Active-Pulse Television Measuring Systems","authors":"I. D. Musikhin, V. V. Kapustin, A. Movchan, E. S. Poznakharev, M. I. Kuryachy, A. A. Tislenko, S. A. Zabuga","doi":"10.1134/S1024856025700022","DOIUrl":"10.1134/S1024856025700022","url":null,"abstract":"The range of detecting objects in inhomogeneous optical radiation propagation media by television measuring systems decreases under the effect of backscattering interference (BI). Active-pulse television measuring systems (AP TMS) enables suppressing a significant part of BI. However, the residual effect on the range measurement accuracy requires estimation. The paper estimates the BI effect on the forms of range measuring functions of AP TMS. Methods for retrieving the form of the AP TMS range measuring function in turbid media have been developed. To minimize the BI effect, a method of calculating and subtracting coefficients and a method of removing the constant component of a spectrum are suggested. The proposed methods were tested with 30 experimental video records obtained in a Large Aerosol Chamber (LAC) of V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, for two multiarea range measurement methods and five meteorological media. The best result was achieved when applying the method of calculating and subtracting coefficients to video records when AP TMS operated in the multiarea range measuring mode: the SD was reduced by 4.5 times on average.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"239 - 248"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165327","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}

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Ground-based Stationary Differential Absorption Lidars for Monitoring Greenhouse Gases in the Atmosphere 用于监测大气中温室气体的地面固定式差分吸收激光雷达

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700150

O. A. Romanovskii, S. V. Yakovlev, S. A. Sadovnikov, A. A. Nevzorov, A. V. Nevzorov, O. V. Kharchenko, N. S. Kravtsova, Yu. V. Kistenev

{"title":"Ground-based Stationary Differential Absorption Lidars for Monitoring Greenhouse Gases in the Atmosphere","authors":"O. A. Romanovskii, S. V. Yakovlev, S. A. Sadovnikov, A. A. Nevzorov, A. V. Nevzorov, O. V. Kharchenko, N. S. Kravtsova, Yu. V. Kistenev","doi":"10.1134/S1024856025700150","DOIUrl":"10.1134/S1024856025700150","url":null,"abstract":"Natural and anthropogenic increase in the greenhouse gas concentrations in the atmosphere is currently considered a determining factor in climate change and global warming. In this regard, there is an urgent need for the development of new techniques for remote monitoring of greenhouse gases with high spatiotemporal resolution and accuracy. Remote laser (lidar) systems enable more accurate and of higher information content measurements of atmospheric concentrations of greenhouse gases in comparison with standard contact gas analysis methods. The characteristics and description of differential lidars for monitoring methane, carbon dioxide, water vapor, ozone, and other gas components are given. The results of the development of ground-based stationary differential absorption lidar systems for remote monitoring of key greenhouse gases in the atmosphere in the past 25 years are systematized and analyzed. This review can be useful for specialists who design systems for remote gas analysis of the atmosphere.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"345 - 359"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165323","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

Monte Carlo Simulation of Polarized Signals of a Laser Navigation System 激光导航系统偏振信号的蒙特卡罗模拟

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700125

E. G. Kablukova, V. G. Oshlakov, S. M. Prigarin

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Phytoplankton Concentration Distribution in the Kara Sea According to Aircraft Laser Sounding Data 基于飞机激光测深数据的喀拉海浮游植物浓度分布

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S102485602570006X

Yu. S. Balin, G. P. Kokhanenko, M. G. Klemasheva, S. V. Nasonov, M. M. Novoselov, I. E. Penner

{"title":"Phytoplankton Concentration Distribution in the Kara Sea According to Aircraft Laser Sounding Data","authors":"Yu. S. Balin, G. P. Kokhanenko, M. G. Klemasheva, S. V. Nasonov, M. M. Novoselov, I. E. Penner","doi":"10.1134/S102485602570006X","DOIUrl":"10.1134/S102485602570006X","url":null,"abstract":"The spatial distribution of the relative concentration of chlorophyll-a in surface waters was estimated at three sites in the southwestern region of the Kara Sea based on laser-induced fluorescence measurements with an aircraft lidar. The fluorescence intensity was normalized to the simultaneously recorded intensity of Raman scattering signals from water. For two sites in the shelf zone near the western coast of the Yamal Peninsula, the spatial distribution of the normalized fluorescence intensity Cl is quite homogeneous, with variation coefficients of 9 and 15%. The third site in the northern tip of the Yamal Peninsula is strongly affected by river runoff, which is manifested in the presence of sharp frontal zones 5–10 km long. At this site, the Cl variation coefficient attains 40%, and the variations are mainly due to the strong variability of the Raman signals and, to a much lesser extent, to variations in the fluorescence intensity. Factors influencing the variability of Raman signals are considered. Synchronous shipboard in-situ measurements and remote aircraft measurements enabled us to find the calibration coefficient kCl = 1.03 ± 0.09 μg/L for the first two sites.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"273 - 282"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165604","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}

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Laser Transillumination Study of Supersonic Jets 超音速射流的激光透照研究

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Atmospheric and Oceanic Optics Pub Date : 2025-07-14 DOI: 10.1134/S1024856025700149

D. A. Marakasov, A. A. Sukharev, R. Sh. Tsvyk

{"title":"Laser Transillumination Study of Supersonic Jets","authors":"D. A. Marakasov, A. A. Sukharev, R. Sh. Tsvyk","doi":"10.1134/S1024856025700149","DOIUrl":"10.1134/S1024856025700149","url":null,"abstract":"Contactless laser transillumination method is promising for studying the flow structure in turbulent supersonic jets. However, interpretation of the experimental results is a nontrivial task, especially in terms of turbulence, due to the spatial inhomogeneity of the fields of gas-dynamic characteristics. In this work, the spectral composition of turbulence in axially symmetric jets in the root region (before closing mixing layers) is analyzed based on laser sensing results. Intensity fluctuations of a laser beam propagating through a submerged supersonic jet are experimentally studied. The spectral density of the power of the fluctuations fully corresponds to the known experimental and calculated spectra for a moving turbulent medium, with the exception of the high-frequency range, where the spectrum is a superposition of two exponential components: the first is close to the known value −14/3 and the second is lower. This is shown to be due to the difference in motion speeds and the structure of vortex flows in the external and internal regions of the mixing layers. The results can be used in calculations of gas-dynamic characteristics and the acoustic emission of jet engines.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 3","pages":"336 - 344"},"PeriodicalIF":0.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165045","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