Atmospheric and Oceanic Optics最新文献_第8页

Compensation of Laser Radiation Wavefront Fluctuations in a Turbulent Medium 湍流介质中激光辐射波前波动的补偿

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701052

A. L. Rukosuev, V. A. Bogachev, M. V. Volkov, A. V. Kudryashov, A. N. Nikitin, Yu. V. Sheldakova, F. A. Starikov

{"title":"Compensation of Laser Radiation Wavefront Fluctuations in a Turbulent Medium","authors":"A. L. Rukosuev, V. A. Bogachev, M. V. Volkov, A. V. Kudryashov, A. N. Nikitin, Yu. V. Sheldakova, F. A. Starikov","doi":"10.1134/S1024856025701052","DOIUrl":"10.1134/S1024856025701052","url":null,"abstract":"This work is devoted to the development and experimental verification of effective methods for compensating dynamic atmospheric distortions of a laser beam propagating through a turbulent medium. A laboratory experiment on the correction of wavefront distortions of laser radiation propagating along a turbulent path in a pavilion was performed, where turbulence was simulated using a fan heater supplying warm air perpendicular to the beam propagation. The distortion compensation was performed using an adaptive optics system with a wavefront tilt corrector and a bimorph deformable mirror. The system efficiency was assessed from the analysis of the far-field intensity distribution. We have shown that the generated turbulent distortions are spectrally similar to Kolmogorov turbulence with a bandwidth of about 30 Hz. For effective compensation of wavefront aberrations, the operating frequency of the adaptive optics system should be 20–30 times higher than the turbulence bandwidth. At a system operating frequency of 1 kHz, the beam divergence was reduced to 1.4 of the diffraction limit. Increasing the frequency to 2 kHz and using FPGA, we attained beam stabilization accuracy of 5 μrad. The results of this work can be used to design high-performance systems related to laser radiation propagation in a turbulent medium.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"117 - 125"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061226","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

Automatic Identification of Lines in Vibrational-Rotational Spectra: Trainable Neural Network Based Software 振动旋转谱线的自动识别：基于可训练神经网络的软件

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701088

A. D. Bykov, O. V. Naumenko, A. P. Shcherbakov

引用次数: 0

Lidar Observations of Wildfire Smoke in the Stratosphere over Western Siberia in June 2025 2025年6月西伯利亚西部平流层野火烟雾的激光雷达观测

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701167

I. I. Romanchenko, V. N. Marichev, P. V. Novikov, D. A. Bochkovsky, A. A. Cheremisin

{"title":"Lidar Observations of Wildfire Smoke in the Stratosphere over Western Siberia in June 2025","authors":"I. I. Romanchenko, V. N. Marichev, P. V. Novikov, D. A. Bochkovsky, A. A. Cheremisin","doi":"10.1134/S1024856025701167","DOIUrl":"10.1134/S1024856025701167","url":null,"abstract":"Stratospheric aerosol, the main component of which are volcanogenic particles, is one of key factors influencing the global climate. The role of aerosol emitted into the stratosphere during wildfires is underestimated. Consideration of the effect of stratospheric aerosol produced by wildfires into climate models leads to significant uncertainties and highlights the need in in-depth study of this phenomenon. This work discusses the results of lidar monitoring of stratospheric aerosol dynamics over Tomsk, Western Siberia, in 2025, with an emphasis on the study of disturbances in the stratospheric aerosol component caused by wildfires. Ground-based lidar sensing in June 2025 detected aerosol layers in the stratosphere over Tomsk at altitudes of 10–17 km. The trajectory analysis and satellite data on wildfires have shown that these aerosol layers could consist of combustion products, including soot transported into the stratosphere by pyrocumulative clouds formed in late May and early June 2025 over severe wildfires covering parts of Canada and the United States. These results are of interest for studying climate changes in Western Siberia.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"202 - 204"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060895","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

Vertical Dynamics of the Stratospheric Polar Vortices during their Anomalous Strengthening in 2020 2020年平流层极地涡旋异常增强过程中的垂直动力学

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701131

V. V. Zuev, E. S. Savelieva, V. L. Pravdin, E. A. Sidorovski

{"title":"Vertical Dynamics of the Stratospheric Polar Vortices during their Anomalous Strengthening in 2020","authors":"V. V. Zuev, E. S. Savelieva, V. L. Pravdin, E. A. Sidorovski","doi":"10.1134/S1024856025701131","DOIUrl":"10.1134/S1024856025701131","url":null,"abstract":"Stratospheric polar vortices, which form over the polar regions in late autumn, are large-scale cyclonic structures whose stability in the winter-spring period determines the scales and depth of spring ozone depletion. Using the vortex delineation method based on ERA5 reanalysis data, we studied the features in the vertical dynamics of the Arctic and Antarctic polar vortices in 2020 during their anomalous strengthening, which was accompanied by deep and prolonged ozone depletion in the Arctic and Antarctic. In particular, we examined the synchronicity in temporal changes at different stratospheric levels. The polar vortex breakdown in 2020 was observed from late spring to early summer spreading from top downward over 1‒2 months. The dynamics of the Arctic polar vortex showed three peaks of activity, spreading from the upper to the lower stratosphere within a month. The dynamics of the Antarctic polar vortex clearly showed one peak of activity spreading from the upper to the lower stratosphere over a period of 2 months. The anomalous duration of the westerly phase of the quasi-biennial oscillation in the middle stratosphere has been proposed as a possible reason for the unprecedented strengthening of the polar vortices in 2020. The results can be used to assess the risks of increasing ground-level UV-B radiation which is dangerous for the biosphere.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"175 - 184"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060896","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

Experimental Search for Optimal Laser Radiation Wavelength for Black Sea Water Sounding 黑海海水测深最佳激光辐射波长的实验研究

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701143

M. A. Karpov, N. V. Tcherniega, A. D. Kudryavtseva, S. F. Umanskaya, N. A. Kleopova, K. V. Kulikovsky, T. V. Baikova

{"title":"Experimental Search for Optimal Laser Radiation Wavelength for Black Sea Water Sounding","authors":"M. A. Karpov, N. V. Tcherniega, A. D. Kudryavtseva, S. F. Umanskaya, N. A. Kleopova, K. V. Kulikovsky, T. V. Baikova","doi":"10.1134/S1024856025701143","DOIUrl":"10.1134/S1024856025701143","url":null,"abstract":"An optimal radiation wavelength for scanning marine surface from air is found, which provides minimal radiation absorption, parasitic fluorescence, beam divergence, and scattering in the water column. These parameters depend on the laser type used. The research focused on water samples from the Black Sea collected 200 m from the shore immediately before the experiment and water samples stored for one year in light-protected hermetically sealed containers. For both sets of samples, the following characteristics were examined: scattering phase function, spectral transmittance, laser beam divergence, particle size distribution of organic matter in the samples, and its effect on fluorescence spectra. Commercial semiconductor lasers with wavelengths of 450, 520, and 660 nm were used. The study shows a 450-nm laser to be optimal for underwater sounding tasks since it exhibits the lowest radiation attenuation in the water column (0.5 dB/m), the smallest scattering spot, and minimal fluorescence. Organic particles do not significantly affect hydrooptical properties of seawater in the both sets of samples. The results can be used in the design of above-water and underwater laser sounding systems for marine surface analysis.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"185 - 191"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061218","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

Infrared-to-Visible Conversion in Mn Vapor Active Media Mn蒸汽活性介质中红外到可见光的转换

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701210

A. E. Kulagin, M. V. Trigub

引用次数: 0

Propagation Regimes of Millimeter Laser Beams in a Kerr-nonlinear Turbulent Medium 毫米波光束在克尔-非线性湍流介质中的传播特性

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701040

A. A. Zemlyanov

引用次数: 0

Vertical Dynamics of the Stratospheric Polar Vortices during their Anomalous Strengthening in 2020 2020年平流层极地涡旋异常增强过程中的垂直动力学

IF 0.9

Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701131

V. V. Zuev, E. S. Savelieva, V. L. Pravdin, E. A. Sidorovski

{"title":"Vertical Dynamics of the Stratospheric Polar Vortices during their Anomalous Strengthening in 2020","authors":"V. V. Zuev, E. S. Savelieva, V. L. Pravdin, E. A. Sidorovski","doi":"10.1134/S1024856025701131","DOIUrl":"10.1134/S1024856025701131","url":null,"abstract":"Stratospheric polar vortices, which form over the polar regions in late autumn, are large-scale cyclonic structures whose stability in the winter-spring period determines the scales and depth of spring ozone depletion. Using the vortex delineation method based on ERA5 reanalysis data, we studied the features in the vertical dynamics of the Arctic and Antarctic polar vortices in 2020 during their anomalous strengthening, which was accompanied by deep and prolonged ozone depletion in the Arctic and Antarctic. In particular, we examined the synchronicity in temporal changes at different stratospheric levels. The polar vortex breakdown in 2020 was observed from late spring to early summer spreading from top downward over 1‒2 months. The dynamics of the Arctic polar vortex showed three peaks of activity, spreading from the upper to the lower stratosphere within a month. The dynamics of the Antarctic polar vortex clearly showed one peak of activity spreading from the upper to the lower stratosphere over a period of 2 months. The anomalous duration of the westerly phase of the quasi-biennial oscillation in the middle stratosphere has been proposed as a possible reason for the unprecedented strengthening of the polar vortices in 2020. The results can be used to assess the risks of increasing ground-level UV-B radiation which is dangerous for the biosphere.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"175 - 184"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061304","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

New Spectroscopic Data for 15N18O Isotopologue in 1.86 μm Region. Dunham Type Constants 1.86 μm区15N18O同位素体的新光谱数据邓纳姆类型常数

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Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701064

Yu. G. Borkov, O. N. Sulakshina, L. N. Sinitsa

{"title":"New Spectroscopic Data for 15N18O Isotopologue in 1.86 μm Region. Dunham Type Constants","authors":"Yu. G. Borkov, O. N. Sulakshina, L. N. Sinitsa","doi":"10.1134/S1024856025701064","DOIUrl":"10.1134/S1024856025701064","url":null,"abstract":"The analysis of a spectrum of 15N18O molecule recorded in the region 5100–5500 cm−1 was performed, and 187 positions of rotational lines were found in the vibrational band 3–0 of the main transitions between the electronic states 2Π1/2 and 2Π3/2 with the maximal rotational quantum number J = 32.5. For the first time, Λ-splitting was observed in this band. The positions and relative intensities of both the resolved component of Λ-doublets and unresolved doublets were determined. A joint weighted processing of all known vibrational-rotational transition frequencies in the microwave and infrared spectral regions was carried out. As a result, Dunham type constants were determined for 15N18O isotopologue in the ground electronic state. Using the found constants, predictive calculations of the rotational line positions of all bands corresponding to vibrational transitions between states with ({v}) ≤ 3 and J ≤ 37.5 were carried out. The experimental data obtained in this study provide new spectroscopic information about 15N18O isotopologue and enrich fundamental knowledge about nitrogen monoxide molecule.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"126 - 135"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061229","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

Lidar Observations of Wildfire Smoke in the Stratosphere over Western Siberia in June 2025 2025年6月西伯利亚西部平流层野火烟雾的激光雷达观测

IF 0.9

Atmospheric and Oceanic Optics Pub Date : 2026-05-30 DOI: 10.1134/S1024856025701167

I. I. Romanchenko, V. N. Marichev, P. V. Novikov, D. A. Bochkovsky, A. A. Cheremisin

{"title":"Lidar Observations of Wildfire Smoke in the Stratosphere over Western Siberia in June 2025","authors":"I. I. Romanchenko, V. N. Marichev, P. V. Novikov, D. A. Bochkovsky, A. A. Cheremisin","doi":"10.1134/S1024856025701167","DOIUrl":"10.1134/S1024856025701167","url":null,"abstract":"Stratospheric aerosol, the main component of which are volcanogenic particles, is one of key factors influencing the global climate. The role of aerosol emitted into the stratosphere during wildfires is underestimated. Consideration of the effect of stratospheric aerosol produced by wildfires into climate models leads to significant uncertainties and highlights the need in in-depth study of this phenomenon. This work discusses the results of lidar monitoring of stratospheric aerosol dynamics over Tomsk, Western Siberia, in 2025, with an emphasis on the study of disturbances in the stratospheric aerosol component caused by wildfires. Ground-based lidar sensing in June 2025 detected aerosol layers in the stratosphere over Tomsk at altitudes of 10–17 km. The trajectory analysis and satellite data on wildfires have shown that these aerosol layers could consist of combustion products, including soot transported into the stratosphere by pyrocumulative clouds formed in late May and early June 2025 over severe wildfires covering parts of Canada and the United States. These results are of interest for studying climate changes in Western Siberia.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"39 2","pages":"202 - 204"},"PeriodicalIF":0.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061257","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