Труды сотрудников ИВМ СО РАН

[Text] / H. . Lammer [et al.] // Astrobiology. - 2007. - Vol. 7, Is. 1. - P185-207, DOI 10.1089/ast.2006.0128. - Cited References: 104 . - ISSN 1531-1074РУБ Astronomy & Astrophysics + Biology + Geosciences, Multidisciplinary

Аннотация: Atmospheric erosion Of CO2-rich Earth-size exoplanets due to coronal mass ejection (CME)-induced ion pick up within close-in habitable zones of active M-type dwarf stars is investigated. Since M stars are active at the X-ray and extreme ultraviolet radiation (XUV) wavelengths over long periods of time, we have applied a thermal balance model at various XUV flux input values for simulating the thermospheric heating by photodissociation and ionization processes due to exothermic chemical reactions and cooling by the CO2 infrared radiation in the 15 mu m band. Our study shows that intense XUV radiation of active M stars results in atmospheric expansion and extended exospheres. Using thermospheric neutral and ion densities calculated for various XUV fluxes, we applied a numerical test particle model for simulation of atmospheric ion pick up loss from an extended exosphere arising from its interaction with expected minimum and maximum CME plasma flows. Our results indicate that the Earth-like exoplanets that have no, or weak, magnetic moments may lose tens to hundreds of bars of atmospheric pressure, or even their whole atmospheres due to the CME-induced O+ ion pick up at orbital distances <= 0.2 astronomical units. We have found that, when exposed to intense XUV fluxes, atmospheres with CO2/N-2 mixing ratios lower than 96% will show an increase in exospheric temperatures and expanded thermosphere-exosphere environments. Hence, they suffer stronger atmospheric erosion, which can result in the total loss of several hundred bars even if an exoplanet is protected by a "magnetic shield" with its boundary located at I Earth radius above the surface. Furthermore, our study indicates that magnetic moments of tidally locked Earth-like exoplanets are essential for protecting their expanded upper atmospheres because of intense XUV radiation against CME plasma erosion. Therefore, we suggest that larger and more massive terrestrial-type exoplanets may better protect their atmospheres against CMEs, because the larger cores of such exoplanets would generate stronger magnetic moments and their higher gravitational acceleration would constrain the expansion of their thermosphere-exosphere regions and reduce atmospheric escape.


Доп.точки доступа:
Lammer, H.; Lichtenegger, H.I.M.; Kulikov, Y.N.; Griessmeier, J.M.; Terada, N.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Khodachenko, M.L.; Ribas, I.; Penz, T.; Selsis, F.

/ N. Venugopal [et al.] // Opt Mater. - 2017. - Vol. 72. - P397-402, DOI 10.1016/j.optmat.2017.06.035 . - ISSN 0925-3467
Аннотация: Light trapping is a crucial prominence to improve the efficiency in thin film solar cells. However, last few years, plasmonic based thin film solar cells shows potential structure to improve efficiency in photovoltaics. In order to achieve the high efficiency in plasmonic based thin film solar cells, traditionally noble metals like Silver (Ag) and Gold (Au) are extensively used due to their ability to localize the light in nanoscale structures. In this paper, we numerically demonstrated the absorption enhancement due to the incorporation of novel plasmonic TiN nanoparticles on thin film Silicon Solar cells. Absorption enhancement significantly affected by TiN plasmonic nanoparticles on thin film silicon was studied using Finite-Difference-Time-Domain Method (FDTD). The optimal absorption enhancement 1.2 was achieved for TiN nanoparticles with the diameter of 100 nm. The results show that the plasmonic effect significantly dominant to achieve maximum absorption enhancement g(?) at longer wavelengths (red and near infrared) and as comparable with Au nanoparticle on thin film Silicon. The absorption enhancement can be tuned to the desired position of solar spectrum by adjusting the size of TiN nanoparticles. Effect of nanoparticle diameters on the absorption enhancement was also thoroughly analyzed. The numerically simulated results show that TiN can play the similar role as gold nanoparticles on thin film silicon solar cells. Furthermore, TiN plasmonic material is cheap, abundant and more Complementary Metal Oxide Semiconductor (CMOS) compatible material than traditional plasmonic metals like Ag and Au, which can be easy integration with other optoelectronic devices. © 2017 Elsevier B.V.

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Держатели документа:
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Computational Modeling, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
L.V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Venugopal, N.; Gerasimov, V. S.; Ershov, A. E.; Karpov, S. V.; Polyutov, S. P.

/ P. E. Cubillos [et al.] // Astrophys. J. - 2017. - Vol. 849, Is. 2, DOI 10.3847/1538-4357/aa9019 . - ISSN 0004-637X
Аннотация: The strong, nearly wavelength-independent absorption cross section of aerosols produces featureless exoplanet transmission spectra, limiting our ability to characterize their atmospheres. Here, we show that even in the presence of featureless spectra, we can still characterize certain atmospheric properties. Specifically, we constrain the upper and lower pressure boundaries of aerosol layers, and present plausible composition candidates. We study the case of the bloated Saturn-mass planet WASP-49 b, where near-infrared observations reveal a flat transmission spectrum between 0.7 and 1.0 ?m. First, we use a hydrodynamic upper-atmosphere code to estimate the pressure reached by the ionizing stellar high-energy photons at 10-8 bar, setting the upper pressure boundary where aerosols could exist. Then, we combine HELIOS and Pyrat Bay radiative-transfer models to constrain the temperature and photospheric pressure of atmospheric aerosols, in a Bayesian framework. For WASP-49 b, we constrain the transmission photosphere (hence, the aerosol deck boundaries) to pressures above 10-5 bar (100?solar metallicity), 10-4 bar (solar), and 10-3 bar (0.1?solar) as the lower boundary, and below 10-7 bar as the upper boundary. Lastly, we compare condensation curves of aerosol compounds with the planet's pressure-temperature profile to identify plausible condensates responsible for the absorption. Under these circumstances, we find these candidates: Na2S (at 100? solar metallicity); Cr and MnS (at solar and 0.1?solar); and forsterite, enstatite, and alabandite (at 0.1?solar). © 2017. The American Astronomical Society. All rights reserved.

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Держатели документа:
Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, Graz, Austria
Federal Research Center Krasnoyarsk Science Center SB RAS, Institute of Computational Modelling, Krasnoyarsk, Russian Federation
Center for Space and Habitability, University of Bern, Sidlerstrasse 5, Bern, Switzerland
Institut fur Geophysik und Meteorologie, Universitat zu Koln, Albertus-Magnus-Platz, Koln, Germany
Max Planck Institute for Astronomy, Konigstuhl 17, Heidelberg, Germany
Department of Astrophysics, University of Vienna, Turkenschanzstrasse 17, Vienna, Austria
Geneva Observatory, University of Geneva, ch. de Maillettes 51, Versoix, Switzerland

Доп.точки доступа:
Cubillos, P. E.; Fossati, L.; Erkaev, N. V.; Malik, M.; Tokano, T.; Lendl, M.; Johnstone, C. P.; Lammer, H.; Wyttenbach, A.

: статья / Г. В. Двирный [и др.] // Сибирский журнал науки и технологий. - 2018. - Т. 19, № 2. - С. 271-280, DOI 10.31772/2587-6066-2018-19-2-271-280 . - ISSN 2587-6066
   Перевод заглавия: Analysis of led-based solar simulator development capability for spacecraft ground testing applications

УДК

621.321

Аннотация: Имитатор солнечного излучения является одним из самых сложных элементов испытательного оборудо- вания, применяемого в ходе наземной отработки космических аппаратов. Большинство современных крупно- габаритных имитаторов построено на основе массива газоразрядных ксеноновых ламп воздушного охлажде- ния по принципу «совмещенных фокусов». Основными недостатками подобных имитаторов являются низкая эффективность и малый ресурс ксеноновых газоразрядных ламп, высокие потери в сложной оптической системе, сложность и неудобство эксплуатации. Предложена схема свободного от указанных недостатков комбинированного имитатора на основе высокоэффективных светодиодов в видимой области спектра и до- полнительных традиционных источников, которыми могут быть кварцево-галогенные лампы накаливания в инфракрасной и газоразрядные ртутные лампы среднего давления в ультрафиолетовой областях. Светоди- одный источник конструктивно выполнен в виде матриц с распределенными параметрами, расположенных в виде одного или нескольких модулей внутри термовакуумной камеры, непосредственно возле объекта испы- таний. Модули снабжены оптической системой, формирующей квазипараллельный световой поток, термо- изоляцией и системой охлаждения, выводящей избыточное тепло за пределы камеры. Проведен краткий сравнительный анализ, в ходе которого показаны преимущества светодиодного имитатора по энергоэффек- тивности, однородности и временной стабильности светового потока, надежности, долговечности и безо- пасности. Предлагаемый имитатор обладает лучшими массогабаритными характеристиками, не требует настройки и юстировки и имеет ряд дополнительных возможностей. Основным недостатком светодиодных источников является несоответствие спектра излучения солнечному. Необходимая спектральная точность может быть достигнута при применении в матрицах большого количества раздельно регулируемых по мощ- ности групп белых и монохромных светодиодов с разными длинами волн и оптической системы, суммирующей потоки групп светодиодов по спектру, углу и площади. На примерах серийно выпускаемых зарубежных свето- диодных имитаторов солнечного излучения наземного спектра АМ1,5 прослеживается тенденция перехода на светодиодные источники. Сделан вывод о возможности создания комбинированного имитатора солнечного излучения на основе высокоэффективных светодиодов для наземной отработки космических аппаратов, обла- дающего улучшенными техническими и эксплуатационными характеристиками
A solar simulator is one of the most difficult elements of the test equipment used during ground testing of space- crafts. The majority of modern large-size simulators are designed on the basis of the block of gas-discharge xenon lamps with air cooling using the principle of the "combined focuses". The main shortcomings of similar simulators are a low efficiency and a small resource of xenon gas-discharge lamps, high losses in the difficult optical system, complex- ity, and inconvenience of operation. The scheme of the combined simulator free from the specified shortcomings based on the high-effective light-emitting diodes in visible area of a range and additional traditional sources which can be quartz-halogen filament lamps in infrared and gas-discharge medium-pressure mercury-vapour arc lamps ultra-violet areas is offered. The LED source is structurally executed in the form of matrixes with the distributed parameters, lo- cated in the form of one or several modules in the thermal vacuum camera directly near the object of testing. Modules are supplied with the optical system forming a quasiparallel light stream, the heat insulation and the cooling system removing excess heat out of camera borders. The short comparative analysis showed advantages of the LED simulator on energy efficiency, uniformity and temporary stability of a light stream, reliability, durability and safety. The offered simulator possesses the best mass-dimensional characteristics, doesn't demand tuning and adjustment and has a num- ber of additional opportunities. The main disadvantage of LED sources is the discrepancy of the solar radiation spec- trum. Essential spectral accuracy can be reached at application in matrixes of a large number of separately power- controlled groups of white and monochrome light-emitting diodes with different length of waves and the optical system summarizing flows of groups of light-emitting diodes on a range, a corner and the area. On examples of serially pro- duced foreign LED solar simulators of a ground-level AM1,5 range the tendency of transition to LED sources is traced. It is concluded that the creation of the combined solar simulator on the basis of highly effective light-emitting diodes for ground testing of spacecrafts possessing the improved technical and operational characteristics is possible.

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Держатели документа:
АО «Информационные спутниковые системы» имени академика М. Ф. Решетнева»
Институт вычислительного моделирования СО РАН
Сибирская пожарно-спасательная академия ГПС МЧС России
Сибирский федеральный университет

Доп.точки доступа:
Двирный, Г.В.; Dvirniy G.V.; Шевчук, А.А.; Shevchuk A.A.; Двирный, В.В.; Dvirniy V.V.; Елфимова, М.В.; Elfimova M.V.; Крушенко, Г.Г.; Krushenko G.G.

[Текст] : статья / А. К. Матузко, О. Э. Якубайлик // Успехи современного естествознания. - 2018. - № 7. - С. 177-182 . - ISSN 1681-7494
   Перевод заглавия: MONITORING OF LAND SURFACE TEMPERATURE IN KRASNOYARSK AND ITS SUBURBAN AREA BASED ON LANDSAT-8 SATELLITE DATA

УДК

912.4

004.4

Аннотация: Настоящая работа посвящена анализу температурных аномалий в городе Красноярске и его окрестностях («городские острова тепла»), которые оценивались по спутниковым данным Landsat-8 теплового инфракрасного диапазона и наземным данным с автоматизированных постов наблюдения за атмосферой. Актуальность исследования обусловлена крайне неблагоприятной экологической обстановкой в городе, сложностью оценки метеорологических характеристик территории из-за значительной неравномерности рельефа, температурным режимом разрезающей город пополам реки Енисей, который обусловлен расположенной в 40 км от города Красноярской ГЭС. Задача состояла в выявлении характерных температурных неоднородностей в городе, их пространственного местоположения и количественной оценке. Всего было рассмотрено 10 безоблачных сцен Landsat-8 на территорию Красноярска и окрестностей, в бесснежный период с 2013 по 2016 гг. Вычисления проводились на основе данных радиометра TIRS (10-й канал – ИК-диапазон 10,3–11,3 мкм). Данные каналов видимого диапазона 4-3-2 (красный-зеленый-синий), регистрируемые радиометром OLI Landsat-8, использовались для классификации изображений, определения типа подстилающей поверхности. Была выполнена обработка спутниковых данных, в том числе – классификация изображения, определение коэффициентов эмиссии для различных участков городской территории, вычисление температуры поверхности. Также был проведен сравнительный анализ полученных данных с измерениями на метеостанциях. Было обнаружено, что температура, измеренная разными способами, имеет сопоставимые значения. По результатам исследования были сформированы сезонные тепловые аномалии городской территории для трех сезонов – лета, весны и осени. Было выделено несколько сезонных тепловых аномальных зон разного типа – природные возвышенности, территории около нескольких крупных торгово-развлекательных центров, промышленные зоны ряда предприятий, участки теплового загрязнения сточными водами.
The subject of the analysis in this paper were temperature anomalies in the city of Krasnoyarsk and its surroundings («Urban Heat Islands»), which were estimated from satellite data Landsat-8 thermal infrared and ground data from automated observation posts for the atmosphere. The relevance of the study is due to the extremely unfavorable environmental situation in the city. The task was to identify characteristic temperature inhomogeneities in the city, their spatial location and quantitative assessment. In total, 10 cloudless Landsat-8 scenes were examined on the territory of Krasnoyarsk and its environs during the snowless period from 2013 to 2016. The calculations were based on the data of the TIRS radiometer (10th channel – IR range of 10.3-11.3 µm). The data of the channels of the visible range 4-3-2 (red-green-blue), registered by the OLI Landsat-8 radiometer, were used to classify the images, to determine the type of underlying surface. Satellite data processing was performed. Also, a comparative analysis of the data obtained with measurements at weather stations was carried out. It was found that the temperature measured in different ways has comparable values. According to the results of the study were formed seasonal thermal anomalies of the urban area. Several seasonal thermal anomalous zones of different types such as natural elevations, territories of about several large shopping and entertainment centers, industrial zones of a number of enterprises, sites of thermal pollution by sewage were singled out.

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Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Матузко, А.К.; Matuzko A.K.; Якубайлик, О.Э.; Yakubaylik O.E.

[Text] : статья / Aleksandra K. Matuzko, Oleg E. Yakubailik // Журнал Сибирского федерального университета. Серия: Техника и технологии. - 2018. - Т. 11, № 8. - P934-945, DOI 10.17516/1999-494X-0115 . - ISSN 1999-494X
   Перевод заглавия: Мониторинг температуры земной поверхности в окрестностях Красноярского края на основе данных спутника Landsat 8

УДК	004.4, 912.4

Аннотация: The problem of temperature anomalies is typical for all major cities in the world. Space thermal images are a powerful source of information for analyzing and determining outlines of temperature anomalies within a single territory. Determination of the nature and boundaries of temperature anomalies will help to understand the causes of the unfavorable ecological situation in Krasnoyarsk: where, in addition to high industrial emissions, atmospheric processes also exert their influence, which lead to the fact that impurities linger and concentrate over the city. The development of advanced space technologies allows the collection of a variety of diverse data more efficiently and at a lower cost than the organization of an appropriate ground network of observation posts and points. One of the most interesting and important indicators about the surface of the Earth is the land surface temperature. Land surface temperature is determined by the balance of incoming and outgoing energy. The main and overwhelming source of energy coming to the surface of the Earth is solar radiation. The 10th and 11th bands of Landsat 8 satellite measure thermal infrared radiation (TIR). The thermal infrared range is particularly useful for determining the temperature difference between the city and surrounding rural areas, and for studying the phenomenon of an urban heat island (UHI).
Проблема температурных аномалий характерна для всех крупных городов мира. Космические тепловые снимки являются весомым источником информации для анализа и определения контуров температурных аномалий в пределах одной территории. Определение природы и границ температурных аномалий поможет понять причины неблагоприятной экологической ситуации в Красноярске: где, помимо высоких промышленных выбросов, оказывают влияние атмосферные процессы, которые приводят к тому, что примеси задерживаются и концентрируются над городом. Развитие передовых космических технологий позволяет осуществлять сбор множества разнообразных данных более эффективно и с меньшими затратами, чем организация соответствующей наземной сети пунктов и постов наблюдения. Одним из наиболее интересных и важных показателей о поверхности Земли служит температура земной поверхности. Температура на поверхности Земли определяется балансом приходящей и уходящей энергии. Основным и подавляющим источником энергии, поступающей к поверхности Земли, является солнечное излучение. Каналы 10-й и 11-й Landsat 8 работают в том же диапазоне, что и канал TIR на более ранних спутниках программы Landsat. Каналы 10-й и 11-й спутника Landsat 8 измеряют тепловое инфракрасное излучение или TIR (thermal infrared). Разрешение для тепловых каналов 100 м.

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Держатели документа:
Institute of Computational Modelling SB RAS

Доп.точки доступа:
Matuzko, Aleksandra K.; Матузко А.К.; Yakubailik, Oleg E.; Якубайлик О.Э.

[Текст] : статья / Николай Яковлевич Шапарев, Юрий Иванович Шокин // Вычислительные технологии. - 2018. - Т. 23, № 6. - С. 107-114, DOI 10.25743/ICT.2018.23.6.010 . - ISSN 1560-7534
   Перевод заглавия: Modelling of summertime hydrothermal regime in the downstream pool of Krasnoyarsk hydroelectric power station
Аннотация: Предлагается модель летнего гидротермического режима р. Енисей в нижнем бьефе Красноярской ГЭС на основе детерминированного подхода. На теплообмен воды с окружающей средой влияют следующие физические процессы: поглощение водой прямой и рассеянной солнечной радиации; поглощение поверхностью воды тепловой инфракрасной радиации (ТИР), исходящей из атмосферы; излучение поверхностью воды ТИР; испарительный и конвективный теплообмен. Результаты моделирования сравниваются с температурными данными, полученными с гидропостов.
Here we consider the summertime hydrothermal regime in a 124-km river occurring within the interval (reach) downstream of the Krasnoyarsk HPP on July 3, 2016 based on the deterministic modelling approach. The reach area is divided by 4 cross-section lines (0.5, 40, 77, 124 km) with gauging stations at the first, second and forth section lines to measure water temperature. Temperature measurements at the gauging stations are taken at time (at hour 08:00 and 20:00). Water temperature at the first gauging station was 7.2^∘ C and remained constant during the time period under consideration. To carry out mathematical simulation by analogy with other authors, we use the Fourier equation. We have proposed a simple model for simulating summertime hydrothermal regime of a river based on calculation of water temperature in a coordinate system moving with water. The physically based estimation of water heat budget takes into account absorption of solar radiation by water surface, emission and absorption of atmospheric thermal infrared radiation (TIR) by water, convective heating of water as well as heat loss due to evaporative processes. The temporal fluctuation pattern of direct and scattered solar radiation depends on the zenith angle and atmospheric absorption. The dominant water heating factor is solar radiation during the daytime and atmospheric TIR at night. Emits TIR defined by the Stefan-Boltzmann law. Water temperatures 124 km downstream of the Krasnoyarsk HPP on the Yenisei River computed using the proposed model with consideration of morphometric characteristics are close to the recorded temperatures observed at the gauging stations, which proves that the deployed physical-mathematical model providing an adequate description of the actual hydrothermal processes. Our spatial-temporal analysis has revealed no diurnal fluctuations of water temperature, which we attribute to the fact that “cold” water leaving the dam enters the “warm” surrounding environment providing a permanent source of water heating.

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Держатели документа:
Институт вычислительного моделирования СО РАН
Институт вычислительных технологий СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Шапарев, Николай Яковлевич; Shaparev Nikolay Yakovlevich; Шокин, Юрий Иванович; Shokin Yuriy Ivanovich

/ N. Y. Shaparev, Y. I. Shokin, O. E. Yakubailik // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 211: International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems, ENVIROMIS 2018 (5 July 2018 through 11 July 2018, ) Conference code: 143586, Is. 1, DOI 10.1088/1755-1315/211/1/012022 . -
Аннотация: The summertime hydrothermal regime of the Yenisei River downstream of the Krasnoyarsk hydroelectric power plant is modeled using a remote sensing and deterministic approach. The Fourier equation is used, and the following physical processes contributing to the heat exchange between the water and the surroundings are taken into consideration: the absorption of direct and scattered solar radiation by water, the absorption of downwelling thermal infrared radiation (TIR) from the atmosphere by water surface, TIR back from the water surface, the convection of heat and the heat loss due to evaporation of water. A clear-skies river thermal regime under no wind condition is studied at 32-km downstream the power plant, and the obtained results are compared against remote sensing data. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny pr., 79., Krasnoyarsk, 660041, Russian Federation
Institute of Computational Technologies of the Siberian Branch of the Russian Academy of Sciences, Academician M.A. Lavrentiev avenue, 6., Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Shaparev, N. Y.; Shokin, Y. I.; Yakubailik, O. E.

/ A. K. Matuzko, O. E. Yakubailik // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 211: International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems, ENVIROMIS 2018 (5 July 2018 through 11 July 2018, ) Conference code: 143586, Is. 1, DOI 10.1088/1755-1315/211/1/012010 . -
Аннотация: Land surface temperature anomalies are typical for all major cities in the world. Satellite data in the thermal infrared range are a powerful source of information for analyzing and determining of temperature anomalies. Determination of the nature and boundaries of temperature anomalies will help to understand the causes of the unfavorable ecological situation in Krasnoyarsk: where, in addition to high industrial emissions, the atmospheric processes also exert their influence, which may cause the impurities linger and concentrate over the city. This paper presents a technique for monitoring the land surface temperature on the basis of thermal infrared data from the 10th band of Landsat 8 satellite. Ground-based temperature data from an environment protection state regional system for observing the state of the atmosphere in the Earth's surface layer are used. The results show that the temperature in the places of temperature anomalies is 5-8 degrees higher than the average surface temperature of the city. Based on the results of an analysis of summer thermal multi-temporal space images, several thermal zones of different nature are outlined in the territory of the city. © Published under licence by IOP Publishing Ltd.

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Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Science, Akademgorodok 50/44., Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny pr., 79., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Matuzko, A. K.; Yakubailik, O. E.

[Текст] : статья / А. К. Матузко, О. Э. Якубайлик // Решетневские чтения. - 2018. - Т. 1, № 22. - С. 374-375 . - ISSN 1990-7702
   Перевод заглавия: INCREASING THE DETAIL OF THE SATELLITE MAPPING OF THE LAND SURFACE TEMPERATURE AT KRASNOYARSK

УДК	004.4, 912.4

Аннотация: Рассматриваются методы оценки температуры земной поверхности по данным ДЗЗ. Сочетание спутниковых данных с нескольких космических аппаратов повышает уровень детализации температурных карт. Представленные результаты показывают расположение температурных аномалий в Красноярске.
The methods of land surface temperature estimation based on remote sensing data are considered. Combination of satellite data from several spacecraft increase the level of detail of temperature maps. The presented results show the location of temperature anomalies in Krasnoyarsk.

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Держатели документа:
Институт вычислительного моделирования СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Матузко, А.К.; Matuzko A.K.; Якубайлик, О.Э.; Yakubailik O.E.

/ A. K. Matuzko, O. E. Yakubailik // Therm. Sci. - 2019. - Vol. 23: 8th All-Russian Scientific Conference on Current Issues of Continuum (NOV, 2018, Tomsk State Univ, Tomsk, RUSSIA). - S615-S621, DOI 10.2298/TSCI19S2615M. - Cited References:26. - This work was carried out with partial financial support from the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory (project No. 18-41-242006 p_mk). . - ISSN 0354-9836. - ISSN 2334-7163РУБ Thermodynamics

Аннотация: Satellite data in the thermal infrared range are a powerful source of information for the analysis and determination of city urban area temperature anomalies. The article presents a technique for monitoring the land surface temperature on the basis of combination of "Landsat 8" satellite thermal infrared data with Planet-Scope satellite constellation high resolution data. Such combination of satellite data from several spacecrafts increase the detalization of temperature maps to the level of individual city blocks. Determination of the nature and boundaries of temperature anomalies will help to understand the causes of the unfavorable environmental situation in Krasnoyarsk, where, in addition to high industrial emissions, their influence and atmospheric processes, leading to the fact that impurities are delayed and concentrated over the city. The results shows that the temperature in the places of thermal anomalies is 5-8 higher than the average land surface temperature of the city. Based on the results of the analysis of summer thermal multi-temporal space images, several thermal zones of different nature were outlined on the territory under consideration. This information can be used in planning the development of the city, the design of new urban neighborhoods.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Computat Modelling, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Matuzko, Alexandra K.; Yakubailik, Oleg E.; Yakubailik, Oleg; Russian Foundation for Basic Research; Government of the Krasnoyarsk Territory [18-41-242006 p_mk]

/ N. Y. Shaparev // Therm. Sci. - 2019. - Vol. 23: 8th All-Russian Scientific Conference on Current Issues of Continuum (NOV, 2018, Tomsk State Univ, Tomsk, RUSSIA). - S607-S614, DOI 10.2298/TSCI19S2607S. - Cited References:16. - This work was carried out with partial financial support from the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory (project No. 18-41-242006 p_mk) . - ISSN 0354-9836. - ISSN 2334-7163РУБ Thermodynamics

Аннотация: A summertime hydrothermal regime of the Yenisei River downstream of the Krasnoyarsk hydroelectric power plant is modeled based on a deterministic approach. To that end, the Fourier equation is used and the following physical processes contributing to the heat exchange between water and the surroundings are taken into consideration: absorption of direct and scattered solar radiation by water, absorption of downwelling thermal infrared radiation from the atmosphere by water surface, thermal infrared radiation back from the water surface, convection of heat and heat loss due to evaporation of water. A clear skies river thermal regime under no wind is studied in a 124-km stream reach below the power plant and the obtained results are compared against temperatures recorded at gauging stations.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Computat Modelling, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Shaparev, Nikolay Y.; Russian Foundation for Basic Research; Government of the Krasnoyarsk Territory [18-41-242006 p_mk]

/ A. A. Gosteva, A. K. Matuzko, O. E. Yakubailik // IOP Conference Series: Materials Science and Engineering : Institute of Physics Publishing, 2019. - Vol. 537: International Workshop on Advanced Technologies in Material Science, Mechanical and Automation Engineering - MIP: Engineering-2019 (4 April 2019 through 6 April 2019, ) Conference code: 149243, Is. 6, DOI 10.1088/1757-899X/537/6/062051 . -
Аннотация: Changes in the microclimate of the urban environment often occur as a result of changes in urban development, artificial changes in the relief, and the cutting down of forest plantations. Due to changes in the urban environment there is a change in the microclimate of the city, which entails a direct change in the land surface temperature. Changes in the urban environment can be detected using space images of different spatial resolution in the visible and far infrared range. Landsat data is currently the most accessible, complete, and open for studying these changes. Thermal imaging is widely used for monitoring urban sites. To increase the spatial resolution, synthesis of Landsat-8 images with higher spatial resolution images of Planet Scope is used, which allows increasing the spatial resolution of surface temperature maps produced from Landsat-8 images from 30 meters to 3 meters. The paper presents the results of an assessment of the land surface temperature in the city of Krasnoyarsk for a two-year period from September 2016 to September 2018 based on the analysis of Landsat-8 and Planet Scope satellite images. © 2019 IOP Publishing Ltd. All rights reserved.

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Держатели документа:
Federal Research Center Krasnoyarsk Science Center, SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Computational Modelling, SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gosteva, A. A.; Matuzko, A. K.; Yakubailik, O. E.

/ A. V. Dergunov [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2019. - Vol. 19: 19th International Multidisciplinary Scientific Geoconference, SGEM 2019 (30 June 2019 through 6 July 2019, ) Conference code: 150486, Is. 2.2. - P517-524, DOI 10.5593/sgem2019/2.2/S10.063 . -
Аннотация: Response to anthropogenic disturbances, recorded according to remote sensing of the Earth, has a long-term manifestation not only in the spectral characteristics of the channels of visible and near infrared ranges of satellite imagery, but also in the study of the temperature field. The paper deals with the local excess temperature of the underlying surface in the areas of cutting the territory of the Angara region, compared with the background values identified by satellite data Landsat 5 and 8 for the seventeen-year period. Estimates of the relative difference in the temperature of the underlying surface of the cutting area in comparison with the average background values are obtained. To this end, a number of software products to automate the archiving and conversion of satellite information has been developed. These software products are designed for calculation of the radio-brightness temperature of the underlying surface of disturbed and undisturbed areas of forest vegetation in the pre-selected areas of the territory. They are also used to average the obtained data of radio-brightness temperature and to calculate the difference between the average values of the radio-brightness temperature of the underlying surface of the disturbed areas relative to the undisturbed, that is, the background. This approach can significantly reduce the processing time of a large amount of information and optimize the amount of data storage. Separately, the study area was analyzed according to the NDVI vegetation index. The data obtained demonstrate a high rate of recovery of grass cover and grass-shrub layer immediately after damage to forest vegetation. It is shown that during the considered period of time (17 years) the value of excess temperature decreases, which is determined by the processes of vegetation restoration, including stand on felling. It is established that the increased temperatures of the underlying surface in the place of cuttings are remained for at least 15 years, and the temperature increase over the background values in the conditions of the observed successional processes is not less than 10%. As a limiting factor in the restoration of the temperature background of the underlying surface, fires can act. © SGEM2019. All Rights Reserved.

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Держатели документа:
Federal Research Center Krasnoyarsk Science Center of the SB RAS, Krasnoyarsk, Russian Federation
Institute of Computational Modelling SB RAS, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Dergunov, A. V.; Krasnoshchokov, K. V.; Ponomarev, E. I.; Yakubailik, O. E.

/ A. A. Gosteva, A. K. Matuzko, O. E. Yakubailik // InterCarto, InterGIS : Lomonosov Moscow State University, 2019. - Vol. 25: InterCarto, InterGIS, ) . - С. 90-100, DOI 10.35595/2414-9179-2019-2-25-90-100
   Перевод заглавия: ВЫЯВЛЕНИЕ ИЗМЕНЕНИЙ ГОРОДСКОЙ СРЕДЫ НА ОСНОВЕ СПУТНИКОВЫХ ДАННЫХ ИНФРАКРАСНОГО ДИАПАЗОНА (НА ПРИМЕРЕ КРАСНОЯРСКА)
Аннотация: A big city in the modern world has a strong influence on climate formation; specific micro-climatic conditions are created on certain streets, determined by urban development, street coverage, distribution of green areas. The city, especially with a highly developed industry, pollutes the atmosphere above itself, increases its turbidity and thereby reduces the influx of solar radiation. The decrease in solar radiation is further enhanced by high buildings in narrow streets. Due to the same shroud of smoke and dust in the city, reduced effective radiation, and hence night cooling. At the same time, radiation reflected by walls and pavements joins the scattered radiation in the city. An important feature of the city is the change in the microclimate of the urban environment. Such changes often occur as a result of changes in urban development, artificial relief changes, and the cutting down of forest plantations. Due to changes in the urban environment, there is a change in the microclimate of the city, which entails a direct change in the temperature of the earth’s surface. Changes in the urban environment can be detected using space images of different spatial resolution in the visible and far infrared range. To study these changes, Landsat data is currently the most accessible, complete, and open. The method of visual analysis conducted on visible spectral channels makes it difficult to assess changes, especially in large areas. Thermal imaging is widely used for research and monitoring of man-made objects such as pipelines, urban facilities, industrial facilities and pollution. It is important that thermal images contain information that is almost impossible to obtain in any other way, for example, using images in the visible and near infrared range. In order to improve spatial resolution, Landsat 8 uses the synthesis of this image with images of a higher spatial resolution Planet Scope, which allows increasing the spatial resolution of Landsat 8 surface temperature maps from 30 to 3 meters. Due to the active development of the city, there is a change in the microclimate of the city, which entails a direct change in the temperature of the earth’s surface. The paper presents the results of the assessment of the temperature of the earth’s surface in the city of Krasnoyarsk for a two-year period from September 2016 to September 2018 based on the analysis of Landsat 8 and Planet Scope satellite images. © 2019 Lomonosov Moscow State University.

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Держатели документа:
Siberian Federal University, Kirenskogo St. 26, ULK building., Krasnoyarsk, 660074, Russian Federation
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences (ICM SB RAS), Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Gosteva, A. A.; Matuzko, A. K.; Yakubailik, O. E.

/ N. Y. Shaparev // Proceedings of SPIE - The International Society for Optical Engineering : SPIE, 2019. - Vol. 11208: 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics 2019 (30 June 2019 through 5 July 2019, ) Conference code: 156374. - Ст. 1120802, DOI 10.1117/12.2538261 . -
Аннотация: We use a deterministic approach to simulate summer hydrothermal regime of a stream. Our simple model involves calculating water temperature in a coordinate system moving with the water. The physically based estimation of water heat budget takes into account absorption of solar radiation by water surface, emission of thermal infrared radiation (TIR) by water and absorption of atmospheric TIR, as well as convective heating of water and heat loss due to evaporative processes. The proposed model is applied to simulate stable diurnal thermal regime of the Yenisei River, employing the Fourier equation for mathematical modeling. We assess the contribution of each of the physical processes into water temperature and come up with a stable temporal diurnal thermal regime for the Yenisei River. © 2019 SPIE.

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Держатели документа:
Institute of Computational Modeling, Federal Research Center, Krasnoyarsk Science Center of SB RAS, Krasnoyarsk, 660036, Russian Federation
National Research Tomsk State University, Tomsk, 634050, Russian Federation

Доп.точки доступа:
Shaparev, N. Y.

/ A. A. Gosteva, A. K. Matuzko, O. E. Yakubailik // CEUR Workshop Proceedings : CEUR-WS, 2019. - Vol. 2534: 2019 All-Russian Conference ""Spatial Data Processing for Monitoring of Natural and Anthropogenic Processes"", SDM 2019 (26 August 2019 through 30 August 2019, ) Conference code: 156641. - P401-405 . -
Аннотация: Changes in the urban environment can be detected using satellite images of different spatial resolutions in the visible and far infrared range. Landsat data is currently the most accessible, complete, and open for studying these changes. Thermal imaging is widely used for research and monitoring of man-made objects such as pipelines, urban facilities, industrial facilities and pollution. The paper presents the results of the assessment of the land surface temperature in the Krasnoyarsk city for the two-year period from September 2016 to September 2018 based on the analysis of Landsat-8 satellite images. Copyright © 2019 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

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Держатели документа:
Federal Research Center Krasnoyarsk Science Center of the SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Computational Modelling SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gosteva, A. A.; Matuzko, A. K.; Yakubailik, O. E.