Atmospheric and Oceanic Optics最新文献_第2页

Dynamics of the Stratospheric Polar Vortex in 2022/2023 by Vortex Delineation Methods Using Geopotential and Potential Vorticity 2022/2023年平流层极涡动力学的位势和位涡圈定方法

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S1024856024701306

V. V. Zuev, E. A. Sidorovski, A. V. Pavlinsky

{"title":"Dynamics of the Stratospheric Polar Vortex in 2022/2023 by Vortex Delineation Methods Using Geopotential and Potential Vorticity","authors":"V. V. Zuev, E. A. Sidorovski, A. V. Pavlinsky","doi":"10.1134/S1024856024701306","DOIUrl":"10.1134/S1024856024701306","url":null,"abstract":"Two methods for stratospheric polar vortex delineation are compared by the main vortex characteristics they provide: vortex area, average wind speed at the edge, mean temperature inside the vortex. One of the methods is based on the geopotential, and another one is based on the potential vorticity (PV). Both methods use ERA5 reanalysis data on isobaric and isentropic surfaces. The geopotential method yields 1.3‑time higher vortex area for the Arctic and 1.14-time higher for Antarctica than the PV method. The estimates of the average wind speed at the vortex edge are very close: the wind speed by PV method is 5% higher than by the geopotential method for the Arctic and 3% higher in Antarctic. Mean temperature inside the vortex by PV method is 1% lower in both the Arctic and Antarctica. The maximal differences in the estimates of the vortex area are 25.52 million km2 in the Arctic (on November 23, 2022, on the 600-K isentropic surface) and 23.78 million km2 in Antarctica (on December 14, 2022, on the 475-K surface). These differences increase with the altitude: from 4.23 million km2 on the 475-K surface to 10.24 million km2 on the 600-K surface in the Arctic, and from 4.91 million km2 on the 475-K surface to 6.17 million km2 on the 600-K surface in Antarctica. The significant difference in the vortex area confirms a need in careful selection of the delineation method when studying polar vortices.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 1","pages":"65 - 68"},"PeriodicalIF":0.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888605","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

Turbulent Lidar Measurement Technique and Comparison with Ground-Based Observations 湍流激光雷达测量技术及其与地面观测的比较

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S1024856024701367

I. A. Razenkov

{"title":"Turbulent Lidar Measurement Technique and Comparison with Ground-Based Observations","authors":"I. A. Razenkov","doi":"10.1134/S1024856024701367","DOIUrl":"10.1134/S1024856024701367","url":null,"abstract":"The history of the creation of a turbulent lidar at V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, began 11 years ago, when a bulky laboratory setup enabled experimentally detecting the backscatter enhancement (BSE) effect in a turbulent atmosphere for the first time. Subsequently, a number of design solutions were suggested to improve the lidar, which made it possible to reduce its size and increase its reliability. The main design features of the turbulent lidar, which is a new type of laser locator, are the coincidence of the optical axes of the transmitter and receiver, the presence of an additional receiving channel, and operation in the photon counting mode with the accumulation of echo signals. In this work, the lidar sounding technique is described; an algorithm for retrieving the profile of the structural characteristic of turbulent fluctuations of the refractive index of air from the ratio of lidar echoes is developed; the experimental technique is verified and the lidar data are compared with the readings of a solar radiometer and a scintillometer. Further development of the turbulent lidar sounding technique is to enable ground-based remote monitoring of the turbulence intensity in the atmospheric boundary layer, e.g., along glide paths at airports, distant early detection of clear air turbulence from an aircraft, etc.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 1","pages":"103 - 111"},"PeriodicalIF":0.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888660","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

Daily Dynamics of the Electric Field in the Turbulent Surface Air Layer under the Action of Local Factors 局地因素作用下湍流地面空气层电场的日动力学

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S102485602470132X

D. V. Timoshenko, G. V. Kupovykh, T. V. Kudrinskaya

{"title":"Daily Dynamics of the Electric Field in the Turbulent Surface Air Layer under the Action of Local Factors","authors":"D. V. Timoshenko, G. V. Kupovykh, T. V. Kudrinskaya","doi":"10.1134/S102485602470132X","DOIUrl":"10.1134/S102485602470132X","url":null,"abstract":"This work studies the effect of the daily dynamics of turbulent processes on the daily dynamics of the electric field in the surface air layer. During simulation, the coefficient of turbulent diffusion within the electrode layer is specified as a stationary function of altitude in view of hydrodynamic concepts. A mathematical model of the dynamics of the electric field intensity in the surface air layer in the case of a turbulent electrode effect is presented. The main equation of the model is the equation of the total current in the surface layer, which has been derived in the approximation of strong turbulent mixing and describes the electrodynamics of the surface layer under the combined action of local and global current generators. The work examines the non-stationary nature of turbulent exchange in order to confirm the previously ascertained effects in the daily dynamics of the electric field strength in the surface air layer under stationary turbulence. To describe the daily dynamics of turbulent processes, gradient measurements in high-altitude conditions of the Elbrus region were used. Processing of the measurement data enables deriving the time dependence of the turbulent diffusion coefficient from the solution of the total current equation. Taking into account this dependence, the expression for the daily dynamics of the field strength was refined. Time shifts of the daily extremes, a change in their amplitude, and the appearance of additional extremes depending on the electric field strength have been established. All these effects are comparable to the global unitary variation and increase with the electric field strength. The results can be useful for solving a number of applied geophysical problems, in particular, monitoring the electric field of the atmosphere and analyzing atmospheric-electrical measurement data.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 1","pages":"77 - 82"},"PeriodicalIF":0.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888596","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

Features of the Vertical Distribution of Air Temperature over Tomsk during Sudden Stratospheric Warming in Winter 2023 According to Data from the Siberian Lidar Station 基于西伯利亚激光雷达站数据的2023年冬季平流层突然变暖期间托木斯克上空气温垂直分布特征

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S102485602470129X

O. Yu. Antokhina, S. M. Bobrovnikov, V. I. Zharkov, O. S. Zorkaltseva, D. A. Trifonov

{"title":"Features of the Vertical Distribution of Air Temperature over Tomsk during Sudden Stratospheric Warming in Winter 2023 According to Data from the Siberian Lidar Station","authors":"O. Yu. Antokhina, S. M. Bobrovnikov, V. I. Zharkov, O. S. Zorkaltseva, D. A. Trifonov","doi":"10.1134/S102485602470129X","DOIUrl":"10.1134/S102485602470129X","url":null,"abstract":"Atmospheric temperature anomalies associated with sudden stratospheric warming events (SSWs) observed over the territory of Siberia require detailed study. In Siberia, there are few instruments that can provide the necessary information on the vertical distribution of atmospheric temperature. Unique lidar of the Siberian Lidar Station (SLS) of V.E. Zuev Institute of Atmospheric Optics SB RAS, Tomsk, Russia (56.48° N, 85.05° E), developed for regular lidar measurements of atmospheric parameters, is one of few ground-based devices in Siberia which provide necessary data on the vertical stratification of atmospheric temperature during the SSW effect. To determine the characteristics of atmospheric temperature anomalies during the SSW period in winter 2023 over Tomsk, data on atmospheric temperature in individual nights obtained by the SLS lidar, the WACCM model, the standard mid-latitude winter model, and the ERA5 reanalysis were compared. For the first time, the possibility of using vertical atmospheric temperature profiles obtained by the Raman scattering method to study the SSW effect is show. Use of lidar air temperature profiles to analyze changes in the vertical structure of the atmosphere during SSWs is demonstrated.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 1","pages":"59 - 64"},"PeriodicalIF":0.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888604","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

Estimation of Atmospheric Optical Parameters with Simultaneous Measurement of Vibrational-Rotational and Purely Rotational Raman Spectra 同时测量振动-旋转和纯旋转拉曼光谱估算大气光学参数

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S1024856024701252

S. V. Samoilova, Yu. S. Balin, I. E. Penner

{"title":"Estimation of Atmospheric Optical Parameters with Simultaneous Measurement of Vibrational-Rotational and Purely Rotational Raman Spectra","authors":"S. V. Samoilova, Yu. S. Balin, I. E. Penner","doi":"10.1134/S1024856024701252","DOIUrl":"10.1134/S1024856024701252","url":null,"abstract":"The paper considers the methodological features of determining the optical extinction and backscattering coefficients by simultaneous lidar measurements at the following wavelengths: 532 nm (elastic scattering, ES), 607 nm (vibrational-rotational Raman scattering, RS), and 530 nm (purely rotational RS). The ES signal identifies the range of allowable values (RAV) of the coefficients based on the a priori introduction of a physically substantiated lidar ratio. The RS signal at λ = 607 nm, corresponding to a single line of the N2 spectrum, provides a plausible estimate of the ratios in the boundary layer and part of the middle troposphere. The RS signal at vλ = 530 nm—a set of N2 and O2 spectrum lines—is characterized by smaller errors and provides a quantitative estimate of the coefficients in all main tropospheric layers. At a wavelength of 530 nm, the differential backscattering cross section depends on height due to temperature changes, which leads to a redistribution of N2 and O2 line intensities. Estimation of parameters from the RS signals is considered plausible when the sought-after coefficients are quantitatively comparable and located within their RAVs. Testing of the algorithms is carried out using ground-based sensing data on the shore of Lake Baikal in August 2023.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 1","pages":"27 - 36"},"PeriodicalIF":0.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888556","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

Estimates of the Frequency of Synoptic Variations in Aerosol Characteristics in the Arctic Atmosphere and the Contribution of Various Pollutants to Anomalously High Aerosol Concentrations 北极大气中气溶胶特征天气变化频率的估计和各种污染物对异常高气溶胶浓度的贡献

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S1024856024701318

I. A. Kruglinsky, D. M. Kabanov, S. M. Sakerin

{"title":"Estimates of the Frequency of Synoptic Variations in Aerosol Characteristics in the Arctic Atmosphere and the Contribution of Various Pollutants to Anomalously High Aerosol Concentrations","authors":"I. A. Kruglinsky, D. M. Kabanov, S. M. Sakerin","doi":"10.1134/S1024856024701318","DOIUrl":"10.1134/S1024856024701318","url":null,"abstract":"The periodicity of synoptic-scale variations in aerosol characteristics in the atmosphere of Eurasian sector of the Arctic Ocean is analyzed on the basic of long-term measurements. Statistically significant maxima of amplitude functions in the range from 3.5 to 18 days were manifested in periodograms of the concentrations of submicron aerosol and black carbon (Vf and еВС). Cases of anomalously high еВС and Vf (5% of data), associated with long-range transports of continental pollutants, were considered in more detail. It is shown that the average duration of “anomalies” in еВС and Vf is few days, and the maximal duration attains 112 hours. The time intervals between “anomalies” are, on the average, 6–16 days, and the maximal intervals are from 28 to 69 days. Despite the short duration and rare occurrence of anomalous situations, they increase the average concentrations of aerosol and black carbon by 28–77%. Calculations showed that the major (79%) contributors to air pollution over the Kara and Barents Seas are made by the outflows of anthropogenic pollutants; and in the eastern sector of the Arctic Ocean, the contribution of smokes from wildfires is maximal. The effect of the products of associated gas combustion at gas-oil plants was manifested most strongly (up to 51%) in the atmosphere of Cape Baranov.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"38 1","pages":"69 - 76"},"PeriodicalIF":0.9,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888553","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

Control of the Spectral Composition of Coherent Radiation on Molecular Nitrogen Ions in Laser Plasma Using Two-Color Pumping 双色抽运控制激光等离子体中分子氮离子相干辐射的光谱组成

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Atmospheric and Oceanic Optics Pub Date : 2025-04-29 DOI: 10.1134/S1024856024701380

I. A. Zyatikov, V. F. Losev

引用次数: 0

Response of Atmospheric Composition Trends in 2003–2019 to Climate Changes in Eurasia 2003-2019年欧亚大陆大气成分变化趋势对气候变化的响应

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Atmospheric and Oceanic Optics Pub Date : 2025-03-24 DOI: 10.1134/S1024856024701574

V. S. Rakitin, Yu. A. Shtabkin, N. S. Kirillova, E. I. Fedorova, A. I. Skorokhod

{"title":"Response of Atmospheric Composition Trends in 2003–2019 to Climate Changes in Eurasia","authors":"V. S. Rakitin, Yu. A. Shtabkin, N. S. Kirillova, E. I. Fedorova, A. I. Skorokhod","doi":"10.1134/S1024856024701574","DOIUrl":"10.1134/S1024856024701574","url":null,"abstract":"The results of GEOS-Chem chemical-transport model (CTM) simulation of methane (CH4), carbon monoxide (CO), and nitrogen dioxide (NO2) total column (TC) trends over Eurasia for different periods and seasons during 2003–2019 are presented. Calculations were conducted for different scenarios of anthropogenic and wildfires emissions. The model trend distributions for all of three gases are compared with estimates obtained from satellite AIRS and OMI data. The TC trends for CO, CH4, and NO2 are quite well reproduced by the model, both in terms of the overall domain and the specificity of the regional trends, but the trend values are generally overestimated compared to the AIRS v6 satellite data, especially for CO in polluted regions (China and Southeast Asia). A possible reason for such discrepancies could be the uncertainties in the anthropogenic and wildfire inventories used. The response of CO TC trends to global changes has been estimated. One of the possible reasons for the positive dynamics of the CO trend after 2008 could be a global increase in methane concentrations, which started around 2007, and additional CO production from methane oxidation.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 1 supplement","pages":"S67 - S71"},"PeriodicalIF":0.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688577","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 Simulation of Non-uniformity in Column Sprite Glow 柱状精灵发光不均匀性的实验模拟

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Atmospheric and Oceanic Optics Pub Date : 2025-03-24 DOI: 10.1134/S1024856024701598

V. F. Tarasenko, N. P. Vinogradov, V. A. Panarin, V. S. Skakun, D. A. Sorokin, E. Kh. Baksht

引用次数: 0

Spatial Variability of Bio-Optical Characteristics in the Upper Water Layer of the Middle Volga in September 2023 Based on Lidar Data 基于激光雷达数据的2023年9月伏尔加河中部上层水层生物光学特征空间变异性

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Atmospheric and Oceanic Optics Pub Date : 2025-03-24 DOI: 10.1134/S1024856024701537

A. A. Molkov, E. S. Koltsova, G. V. Leshchev, I. A. Kapustin, A. V. Ermoshkin, V. V. Pelevin, B. V. Konovalov, A. N. Drozdova, A. M. Chushnyakova

{"title":"Spatial Variability of Bio-Optical Characteristics in the Upper Water Layer of the Middle Volga in September 2023 Based on Lidar Data","authors":"A. A. Molkov, E. S. Koltsova, G. V. Leshchev, I. A. Kapustin, A. V. Ermoshkin, V. V. Pelevin, B. V. Konovalov, A. N. Drozdova, A. M. Chushnyakova","doi":"10.1134/S1024856024701537","DOIUrl":"10.1134/S1024856024701537","url":null,"abstract":"The remote sensing of inland waters has begun to rapidly develop with the recent setting into operation of high- and medium-resolution satellite constellation Sentinel, as well as the introduction of machine learning to data processing and analysis. However, the collection of large arrays of in situ data remains a weakness due to the significant diversity of inland waters, seasonal features, and the strong influence of meteorological conditions and hydrology. As a possible solution, this paper considers the collection and investigation of bio-optical characteristics of the upper water layer with the use of UFL-9 fluorescent shipborne LiDAR with meter resolution in a 1000 km section of the middle Volga from Nizhny Novgorod to Bolgar (close to Ul’yanovsk) as an example. Continuous measurements were performed on September 9–17, 2023, from a moving boat. Based on the obtained LiDAR data, chlorophyll “a”, suspended matter, and the absorption coefficient at 440 nm as an indicator of colored dissolved organic matter were mapped and described. The ranges of their variability and effects of inflows and meteorological conditions are analyzed. The results expand previous knowledge on the bio-optical characteristics of middle Volga and its variability on different spatial and temporal scales and contribute to the solution of the problem of developing bio-optical models for the Cheboksary and Kuibyshev reservoirs.","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 1 supplement","pages":"S144 - S152"},"PeriodicalIF":0.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688486","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