E. S. Lutskin, M. Yu. Shikhovtsev, Ye. V. Molozhnikova, V. A. Obolkin, O. I. Berdashkinova, T. V. Khodzher
{"title":"Mercury in Atmospheric Air and Precipitation at the Monitoring Station Listvyanka (Southern Baikal Region) in 2022–2023","authors":"E. S. Lutskin, M. Yu. Shikhovtsev, Ye. V. Molozhnikova, V. A. Obolkin, O. I. Berdashkinova, T. V. Khodzher","doi":"10.1134/S102485602470088X","DOIUrl":"10.1134/S102485602470088X","url":null,"abstract":"<p>Gaseous elemental mercury (GEM) is the predominant form of mercury in the atmosphere. As a result of deposition, it enters terrestrial and aquatic ecosystems, where it is further transformed into the ecotoxicant methylmercury. The work studies GEM in atmospheric air and total mercury in atmospheric precipitation in the Southern Baikal region. Sampling was carried out at Listvyanka monitoring station (51.9° N, 104.4° E) in 2022–2023. The concentrations of mercury in air was measured with a RA-915AM mercury gas analyzer (St. Petersburg, Russia); the concentration of total mercury in precipitation was determined by PND F 14.1:2:4.271-2012 method A (permanganate mineralization) technique. The measured concentrations were statistically analyzed. During the period under study, the concentration of GEM in atmospheric air averaged 1.61 ng/m<sup>3</sup>; the pair correlation coefficient was 0.47 between Hg<sup>0</sup> and sulfur dioxide (SO<sub>2</sub>) and 0.44 between Hg<sup>0</sup> and nitrogen dioxide (NO<sub>2</sub>); a strong positive correlation (>0.9) between Hg<sup>0</sup>, SO<sub>2</sub>, and NO<sub>2</sub> was found in 12 cases. For each episode of mercury concentration above 2.0 ng/m<sup>3</sup>, back trajectories of air masses were calculated using the HYSPLIT model. The trajectory analysis also confirmed our assumption of a common type of sources of mercury and trace gases. The weighted average content of total mercury in precipitation is 44 ng/L, the median value is 29 ng/L, and the maximum is 282 ng/L. The results supplement the existing ideas about mercury content in the atmosphere of the Southern Baikal region and show the mercury content in atmospheric precipitation on the Baikal shore to be comparable with the results obtained in urban agglomerations of Nepal, Canada, Korea, and China despite the significant distance of the measurement site from large cities.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"656 - 665"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859439","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}
{"title":"Vibrational Energy Levels for Sulfur Dioxide Isotopologues","authors":"K. K. Sharybkina, O. V. Naumenko","doi":"10.1134/S1024856024700817","DOIUrl":"10.1134/S1024856024700817","url":null,"abstract":"<p>For five isotopologues of the SO<sub>2</sub> molecule: <sup>32</sup>S<sup>16</sup>O<sub>2</sub>, <sup>34</sup>S<sup>16</sup>O<sub>2</sub>, <sup>33</sup>S<sup>16</sup>O<sub>2</sub>, <sup>32</sup>S<sup>18</sup>O<sub>2</sub>, and <sup>32</sup>S<sup>16</sup>O<sup>18</sup>O, parameters of the effective vibrational Hamiltonian are derived from fitting to the available experimental data, as well as using the basic relations of the isotope substitution theory. Vibrational constants obtained from the fit reproduce the experimental vibrational energy levels within 0.025 cm<sup>–1</sup> for symmetric isotopologues. The obtained vibrational energy levels are compared with the variational calculation, and the quantum numbers for 93 vibrational states are corrected.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"593 - 604"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859429","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}
{"title":"Erratum to: Estimation of the Atmospheric Turbulence Parameters Using the Angle-of-Arrival Covariance Function","authors":"F. Bennoui, D. Bahloul","doi":"10.1134/S1024856024060010","DOIUrl":"10.1134/S1024856024060010","url":null,"abstract":"","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"742 - 742"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859433","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}
T. V. Kobzeva, G. G. Dultseva, S. N. Dubtsov, M. E. Stekleneva
{"title":"Natural and Anthropogenic Sources of Organic Aerosol in the Atmosphere: Kinetics and Mechanism of Formation in the Forest-steppe Zone of West Siberia","authors":"T. V. Kobzeva, G. G. Dultseva, S. N. Dubtsov, M. E. Stekleneva","doi":"10.1134/S1024856024700830","DOIUrl":"10.1134/S1024856024700830","url":null,"abstract":"<p>Contribution of carbonyl compounds into the generation of atmospheric organic aerosol in the presence of typical urban air pollutants is investigated. Aldehydes and ketones entering the atmosphere from natural and anthropogenic sources are identified by means of high-performance liquid chromatography. Field measurements were carried out on the territory of Novosibirsk scientific center and in adjacent forest areas. It is shown that the transport of typical gaseous urban air pollutants (nitrogen oxides and ozone) into the air of forest areas and the transport of biogenic compounds (alkenes and aldehydes) to the urban territory cause sharp changes of the kinetics and mechanism of organic aerosol generation in comparison with the processes taking place in typical urban atmosphere. Thus, in the presence of ozone, the yield of aerosol products from formaldehyde, acetaldehyde, and propanal photonucleation increases by a factor of 4–8, while for benzaldehyde and acrolein it exhibits 5- and 30-fold decrease, respectively. For aromatic substituted aldehydes and furfural, aerosol yield slightly increases (only up to 30%). The results make it possible to carry out quantitative evaluation of the capacity of natural and anthropogenic sources of organic aerosol in the forest-steppe zone of Western Siberia and predict the biological effect of aerosol generated in the presence of various pollutants.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"614 - 619"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859443","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}
{"title":"Comparison of Atmospheric Nitrogen Dioxide Content Data Derived from Satellite (OMI) and Ground-Based (NDACC) Measurements","authors":"A. N. Gruzdev, A. S. Elokhov","doi":"10.1134/S1024856024700908","DOIUrl":"10.1134/S1024856024700908","url":null,"abstract":"<p>Comparison of satellite measurements with independent measurements is an essential and necessary component of validation of satellite data. In this work, we compare the spectrometric measurements of the NO<sub>2</sub> content in the atmosphere by the Ozone Monitoring Instrument (OMI) in 2004–2020 with the ground-based twilight zenith measurements at 14 stations of the Network for the Detection of Atmospheric Composition Change (NDACC). We obtained the latitudinal distributions of NO<sub>2</sub> content and of the comparison characteristics: differences in the contents and the correlation and linear regression coefficients between the satellite and ground-based data. Criteria are proposed for testing the interannual and long-term changes in NO<sub>2</sub> content derived from the OMI data based on the ground-based measurements. The latitudinal—hemispheric and regional—features of the correspondence between the satellite and ground-based data have been revealed. Significantly new results have been obtained on the dependence of the comparison characteristics on the level of pollution of the lower troposphere with nitrogen oxides and on the timescale of NO<sub>2</sub> variations: day-to-day, seasonal, and interannual. The results will be useful in the analysis of NO<sub>2</sub> variability based on OMI data.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"675 - 683"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859828","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}
Yu. G. Borkov, O. N. Sulakshina, V. I. Serdyukov, L. N. Sinitsa
{"title":"Spectrum of 14N17O Isotopologue in the 5200–5550 cm−1 Region: Spectroscopic Parameters for ({v}) = 3 State","authors":"Yu. G. Borkov, O. N. Sulakshina, V. I. Serdyukov, L. N. Sinitsa","doi":"10.1134/S1024856024700799","DOIUrl":"10.1134/S1024856024700799","url":null,"abstract":"<p>The absorption spectrum of the <sup>14</sup>N<sup>17</sup>O molecule was recorded in the 5200–5550 cm<sup>−1</sup> range for the first time using a Bruker IFS-125M Fourier spectrometer with a spectral resolution of 0.0056 cm<sup>−1</sup>. The analysis of the spectrum made it possible to detect 83 vibrational-rotational lines of the 3–0 band of the fundamental transitions in the <i>X</i> <sup>2</sup>Π electronic state of the <sup>14</sup>N<sup>17</sup>O molecule. For 29 resolved doublets, the positions and relative intensities of each component of a doublet are determined; the spectroscopic Λ-parameters are found. For the remaining 25 unresolved doublets, the positions and relative intensities of the doublet center are determined. The maximal rotational quantum number <i>J</i> was 24.5. The experimental line positions in the 3–0 band confirmed the calculated data given in the ExoMol database. The frequencies of recorded transitions weighted in accordance with experimental uncertainties have been processed, and the spectroscopic constants for the vibrational state <span>({v})</span> = 3 have been determined. With the found spectroscopic constants, the rotational energy up to <i>J</i> = 30.5 in the vibrational state <span>({v})</span> = 3 and the transition frequencies in 3–0 vibrational band for <sup>2</sup>Π<sub>1/2</sub> and <sup>2</sup>Π<sub>3/2</sub> electronic states were predictive calculated. The calculations showed agreement with the data given in the ExoMol database within a specified error.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"577 - 584"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859446","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}
A. M. Baklanov, A. A. Protasov, M. E. Stekleneva, S. V. Valiulin
{"title":"Technique for Generating Dry Aerosol Particles from a Solution: The Case of Fluconazole","authors":"A. M. Baklanov, A. A. Protasov, M. E. Stekleneva, S. V. Valiulin","doi":"10.1134/S1024856024700957","DOIUrl":"10.1134/S1024856024700957","url":null,"abstract":"<p><b>Abstract</b>—Infectious diseases affecting the respiratory system are currently a serious medical problem. One of the ways of increasing the effectiveness of therapy for such diseases is targeted delivery of drugs. This approach requires the development of new methods for generating aerosols of drugs with particle sizes which enable penetrating into specified areas of the respiratory system. In this work, a technique for generating dry aerosol particles based on ultrasonic spraying of a drug solution is suggested and implemented. Using the example of a solution of the medicinal antifungal substance fluconazole, we show that this technique enables generating aerosol particles with stable concentration and average size for more than 2 hours. The resulting aerosol has optimal inhalation parameters: size from 1 to 1.9 microns and concentration of 70 000 ± 6500 cm<sup>−3</sup>. The suggested technique makes it possible to further study the biological effect of aerosols of drugs.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"715 - 718"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859825","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}
E. A. Maslennikova, V. V. Zuev, E. S. Savelieva, A. V. Pavlinsky
{"title":"Activity of High Cyclones above Erebus Volcano According to ERA5 Reanalysis Data","authors":"E. A. Maslennikova, V. V. Zuev, E. S. Savelieva, A. V. Pavlinsky","doi":"10.1134/S1024856024700994","DOIUrl":"10.1134/S1024856024700994","url":null,"abstract":"<p>The Erebus volcano is the southernmost active volcano on Earth, whose volcanogenic emissions include components which play a significant role in catalytic cycles of stratospheric ozone depletion. High cyclones contribute to the rise of gas emissions from the Erebus volcano (including HCl and SO<sub>2</sub>) from the troposphere to the altitudes of ozone hole formation, from 14 to 22 km in the stratosphere. The paper considers the integral content of HCl and ClONO<sub>2</sub> for the period 1992–2023 and analyzes the variability of the frequency of high cyclone occurrence for the period 1980–2022 based on the ERA5 reanalysis data. It is revealed that the maximal frequency of occurrence of high cyclones over the Erebus volcano is usually observed in July. The integral HCl content over Antarctic stations is much higher than over Arctic ones and approximately twice as high as over midlatitude stations. The effect of HCl accumulation in the stratosphere is shown: the coefficient of correlation between 5-year average frequencies of occurrence of high cyclones and 5-year average areas of the ozone hole with a 4-year shift ahead of the series of ozone hole areas relative to the series of high cyclone frequencies, calculated for the period from 1980 to 2022, amounts 0.78.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"738 - 741"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859430","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}
{"title":"Numerical Simulation of Summer Warming of Siberian Shelf Seas Depending on Short-Wave Radiation Parameterization","authors":"D. F. Iakshina, E. N. Golubeva, V. S. Gradov","doi":"10.1134/S1024856024700945","DOIUrl":"10.1134/S1024856024700945","url":null,"abstract":"<p>The main source of summer heating of the upper layer of Siberian Arctic shelf seas is shortwave solar radiation. The radiation flux attenuates as it passes through the water depth, and the attenuation rate is determined by the optical properties of water, which mainly depend on the concentration of suspended matter in the water. In numerical models of the ocean and sea ice, the process of shortwave solar radiation absorption is described by different parameterizations. In this work, the sensitivity of the numerical 3D regional ocean and sea ice model SibCIOM to two parameterizations of the penetrating radiation is studied: (1) two-component parameterization with constant attenuation coefficients for the infrared and visible spectral regions depending on one of ten ocean water transparency classes; (2) three-component parameterization with different absorption coefficients for the red, green, and blue parts of the visible spectrum, which is based on satellite data on chlorophyll concentration. The analysis of the results of numerical experiments for the water area of Siberian shelf seas has shown that if the seasonal distribution of chlorophyll concentration is taken into account when simulating a penetrating shortwave radiation flux with the RGB parameterization, then regions of water warming are formed in the surface or bottom layer, which differ from a basic experiment with the two-component parameterization. The comparison between the simulation results with observations shows the RGB parameterization to be preferable for the numerical simulation of Arctic shelf seas.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"706 - 714"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859822","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}
V. V. Nosov, V. P. Lukin, E. V. Nosov, A. V. Torgaev
{"title":"Determination of Atmospheric Turbulence Type from Operational Meteorological Measurements","authors":"V. V. Nosov, V. P. Lukin, E. V. Nosov, A. V. Torgaev","doi":"10.1134/S1024856024700829","DOIUrl":"10.1134/S1024856024700829","url":null,"abstract":"<p><b>Abstract</b>—To determinate the atmospheric turbulence type (Kolmogorov, coherent, etc.) in operational mode, a new technique has been developed based on an algorithm for spectral analysis of sequential overlapping samples from a continuously replenished population of meteorological measurements. The samples are generated by the sliding time window method. A turbulence type criterion is the slope of the inertial interval of the spectrum of temperature fluctuations near the maximum, which is equal to −5/3 under Kolmogorov turbulence and −8/3 under coherent turbulence. The slope is calculated from the linear regression equation at the initial part of the spectrum, the length of which is specified by the decrease by one order of magnitude from the maximum. It is shown that these slopes are lognormally distributed for the recorded meteosituations under urban conditions. It is found that the proportion of non-Kolmogorov turbulence in more than 5 million calculated spectra is much larger than expected and amounts to 75–97% depending on the estimation rigor. It is shown that sequences of spectra with the same slope correspond to regions of turbulence of the same type. Boundaries of the regions are defined with accuracy of the sliding window shift step; the size of the regions is estimated based on data on the wind speed and recording time. It is shown that the extent of the regions can significantly exceed the length of a region for an ordinary sample under comparable conditions. To accelerate the post processing of large datasets, the algorithm uses the message passing interface (MPI) for a computing cluster with an arbitrary number of nodes. The field of application of the suggested technique in astronomical practice is the estimation and registration of the sizes of spatial regions of strong and weak turbulence, where the turbulence intensity is within fixed ranges, along an optical path, as well as the sizes of regions with fixed temperature stratification.</p>","PeriodicalId":46751,"journal":{"name":"Atmospheric and Oceanic Optics","volume":"37 5","pages":"605 - 613"},"PeriodicalIF":0.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858716","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}