Pub Date : 2019-11-05DOI: 10.31857/s0205-96142019536-49
O. Lavrova, D. Soloviev, A. Strochkov, K. Nazirova, E. Krayushkin, E. Zhuk
The results of field measurements of coastal currents using Lagrangian mini-drifters are presented. Drifter experiments were conducted concurrently with satellite imaging using Sentinel-2 MSI, Landsat-8 OLI and Sentinel-3 OLCI sensors. It is shown that the use of an inexpensive and simple to manufacture device, which is a mini-drifter, allows obtaining operational information about the parameters of coastal currents. In the experiments of April-May, 2019, in the northeastern part of the Black Sea, it was possible to estimate the velocity of coastal currents and determine the minimum distance that Black Sea Rim Current approached the coast. The trajectories of mini-drifters revealed the manifestations of inertial oscillations whose spatial characteristics are almost impossible to measure in any other way. The influence of the vortex structures detected in visible satellite images on the distribution of mini-drifters was estimated.
{"title":"The use of mini-drifters in coastal current measurements conducted concurrently with satellite imaging.","authors":"O. Lavrova, D. Soloviev, A. Strochkov, K. Nazirova, E. Krayushkin, E. Zhuk","doi":"10.31857/s0205-96142019536-49","DOIUrl":"https://doi.org/10.31857/s0205-96142019536-49","url":null,"abstract":"The results of field measurements of coastal currents using Lagrangian mini-drifters are presented. Drifter experiments were conducted concurrently with satellite imaging using Sentinel-2 MSI, Landsat-8 OLI and Sentinel-3 OLCI sensors. It is shown that the use of an inexpensive and simple to manufacture device, which is a mini-drifter, allows obtaining operational information about the parameters of coastal currents. In the experiments of April-May, 2019, in the northeastern part of the Black Sea, it was possible to estimate the velocity of coastal currents and determine the minimum distance that Black Sea Rim Current approached the coast. The trajectories of mini-drifters revealed the manifestations of inertial oscillations whose spatial characteristics are almost impossible to measure in any other way. The influence of the vortex structures detected in visible satellite images on the distribution of mini-drifters was estimated.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133545733","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}
Pub Date : 2019-11-05DOI: 10.31857/s0205-96142019559-71
M. V. Zadorozhnyy, I. Zolnikov, N. Glushkova
Detailed geological mapping of Olon-Ovoot gold-ore cluster (South Mongolia) on the basis of interpretation of satellite imagery of medium and high spatial resolution The article presents the results of geological interpretation the territory of the Olon-Ovoot ore cluster by space imagery of medium and high spatial resolution. A Sentinel-2 imagery, chosen for interpretation, was orthorectified and reduced to a common spatial resolution (10m) The iron-hydroxid and ferrous-silicates indices in Sentinel-2 imagery were used to detect the perspective gold-bearing objects. The sub-pixel structure of the imagery Sentinel-2 were analyzed by means of satellite imagery of high spatial resolution by Google Earth for detecting areas concentration of the quartz-carbonate veins. The study of the spectral domain in high-resolution imagery not necessary for detecting lineaments by structural and morphological interpretation. The interpretation of the remote sensing data provide a unique opportunity to substantial specify the geological structure of the territory and change the level of mapping from the scale of 1 : 200 000 to the scale of 1 : 20 000 for the perspective areas. The integration of satellite images of different functional scale provided an tenfold increase for some geological objects (for example dikes). Detailed mapping of the territory allowed to come for geoinformation modeling of geological structural elements and predictive indicators.
{"title":"Detailed geological mapping of the Olon-Ovoot gold-ore cluster (South Mongolia) based on the interpretation of satellite imagery of medium and high spatial resolution.","authors":"M. V. Zadorozhnyy, I. Zolnikov, N. Glushkova","doi":"10.31857/s0205-96142019559-71","DOIUrl":"https://doi.org/10.31857/s0205-96142019559-71","url":null,"abstract":"Detailed geological mapping of Olon-Ovoot gold-ore cluster (South Mongolia) on the basis of interpretation of satellite imagery of medium and high spatial resolution The article presents the results of geological interpretation the territory of the Olon-Ovoot ore cluster by space imagery of medium and high spatial resolution. A Sentinel-2 imagery, chosen for interpretation, was orthorectified and reduced to a common spatial resolution (10m) The iron-hydroxid and ferrous-silicates indices in Sentinel-2 imagery were used to detect the perspective gold-bearing objects. The sub-pixel structure of the imagery Sentinel-2 were analyzed by means of satellite imagery of high spatial resolution by Google Earth for detecting areas concentration of the quartz-carbonate veins. The study of the spectral domain in high-resolution imagery not necessary for detecting lineaments by structural and morphological interpretation. The interpretation of the remote sensing data provide a unique opportunity to substantial specify the geological structure of the territory and change the level of mapping from the scale of 1 : 200 000 to the scale of 1 : 20 000 for the perspective areas. The integration of satellite images of different functional scale provided an tenfold increase for some geological objects (for example dikes). Detailed mapping of the territory allowed to come for geoinformation modeling of geological structural elements and predictive indicators.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133417302","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}
Pub Date : 2019-11-05DOI: 10.31857/s0205-96142019572-81
V. N. Orlyankin, В Н Орлянкин, A. Aleshina, А Р Алешина
The article shows the possibility of using the SRTM model in order to search for the best options for detailed ground-based engineering surveys in flat-tree-free areas. The authors conducted a study of the accuracy of the SRTM model for the territory of the Russian Federation to the south of 60 N and neighboring countries (17 countries of Europe and 10 countries of Asia). A mapped zonality map of the identified systematic errors of the SRTM matrix of heights is shown. Using the example of the Ramensky section of the Moscow River valley (near the cities of Zhukovsky and Ramenskoye), the absolute heights of the surface of the flood flood zone were determined, the boundaries and depths of flooding were calculated and mapped during a flood of 1% of the coverage. Maps of engineering protection objects from flooding of the territory of this site on a scale of 1:100 000 and larger, as well as parts of the Moscow and Oka river valleys on a smaller scale 1:1 000000 are proposed.
{"title":"The use of matrixes of heights srtm in the preliminary calculations and mapping of depths and potential flood inundation of fluvial plain.","authors":"V. N. Orlyankin, В Н Орлянкин, A. Aleshina, А Р Алешина","doi":"10.31857/s0205-96142019572-81","DOIUrl":"https://doi.org/10.31857/s0205-96142019572-81","url":null,"abstract":"The article shows the possibility of using the SRTM model in order to search for the best options for detailed ground-based engineering surveys in flat-tree-free areas. The authors conducted a study of the accuracy of the SRTM model for the territory of the Russian Federation to the south of 60 N and neighboring countries (17 countries of Europe and 10 countries of Asia). A mapped zonality map of the identified systematic errors of the SRTM matrix of heights is shown. Using the example of the Ramensky section of the Moscow River valley (near the cities of Zhukovsky and Ramenskoye), the absolute heights of the surface of the flood flood zone were determined, the boundaries and depths of flooding were calculated and mapped during a flood of 1% of the coverage. Maps of engineering protection objects from flooding of the territory of this site on a scale of 1:100 000 and larger, as well as parts of the Moscow and Oka river valleys on a smaller scale 1:1 000000 are proposed.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114376025","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}
Pub Date : 2019-11-05DOI: 10.31857/s0205-96142019515-35
A. Ivanov, А.Ю. Иванов
Data from the spaceborne synthetic aperture radars (SAR) provide new opportunities for observing and studying local katabatic winds (bora, foehn) in various marine regions of the Russian Federation and adjacent countries. The impact of these winds on the characteristics of small-scale wind waves leads to the formation of characteristic manifestations on the sea surface which are displayed on SAR images. Satellite SAR images, in contrast to sub-satellite observations, make it possible to see the phenomenon in the coastal zones of seas and large lakes, judge the spatial scale of the phenomenon and determine a number of it quantitative characteristics. Analysis of collected SAR images shows that local winds, bora-like and foehn-like, have similar characteristics and cover vast areas of the inland and marginal seas of the Russian Federation. The similarity of the surface manifestations of the local winds, clearly speaks about the same physical and aerohydrodynamic mechanisms of their display on SAR images. It is shown that spaceborne SAR data and images, which are two-dimensional spatial patterns of frozen wind, are extremely useful for research and monitoring local winds over the seas of the Russian Federation, especially where the network of weather stations is extremely rare.
{"title":"Local katabatic winds of the Russian Federation and their observation from space using SAR imagery.","authors":"A. Ivanov, А.Ю. Иванов","doi":"10.31857/s0205-96142019515-35","DOIUrl":"https://doi.org/10.31857/s0205-96142019515-35","url":null,"abstract":"Data from the spaceborne synthetic aperture radars (SAR) provide new opportunities for observing and studying local katabatic winds (bora, foehn) in various marine regions of the Russian Federation and adjacent countries. The impact of these winds on the characteristics of small-scale wind waves leads to the formation of characteristic manifestations on the sea surface which are displayed on SAR images. Satellite SAR images, in contrast to sub-satellite observations, make it possible to see the phenomenon in the coastal zones of seas and large lakes, judge the spatial scale of the phenomenon and determine a number of it quantitative characteristics. Analysis of collected SAR images shows that local winds, bora-like and foehn-like, have similar characteristics and cover vast areas of the inland and marginal seas of the Russian Federation. The similarity of the surface manifestations of the local winds, clearly speaks about the same physical and aerohydrodynamic mechanisms of their display on SAR images. It is shown that spaceborne SAR data and images, which are two-dimensional spatial patterns of frozen wind, are extremely useful for research and monitoring local winds over the seas of the Russian Federation, especially where the network of weather stations is extremely rare.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132758462","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}
Pub Date : 2019-11-05DOI: 10.31857/s0205-96142019589-98
V. Selin, В А Селин, A. A. Emelyanov, А. А. Емельянов, O. Sizov, О С Сизов, K. Emelyanov, К С Емельянов, A. Borisov, Александр Владимирович Борисов
According to the results of direct interaction with various groups of consumers, it was established that the structure of requirements in all thematic areas at the present time comes to the fore geographic coverage, regularity and frequency of shooting. The second priority is to ensure the quality of the spectroradiometric characteristics in the context of their absolute performance and stability in the time series of the entire archive of the survey with the ability to provide data in physical quantities of reflectivity, or spectral brightness of the reflected radiation / brightness temperature. The requirements for spatial resolution within a separately allocated class of data, as well as the presence of a panchromatic channel are not significant for the majority of respondents. In the understanding of thematic users, the mediated requirements for the characteristics of the target remote sensing equipment are formed through direct requirements for the initial remote sensing data. When creating a promising ERS satellite on the part of the state customer, it is advisable to conduct regular advanced studies of user expectations and preferences in order to fully coordinate and integrate them into technical specifications for various products of the space system. In general, for effective generalization of various, often opposite, functional expectations, it is advisable to conduct a comprehensive discussion that provides a feedback mechanism from both authorized representatives of main consumers and developers of target equipment and space remote sensing systems.
{"title":"Evaluation of functional expectations of thematic consumers from optical space remote sensing systems of medium resolution","authors":"V. Selin, В А Селин, A. A. Emelyanov, А. А. Емельянов, O. Sizov, О С Сизов, K. Emelyanov, К С Емельянов, A. Borisov, Александр Владимирович Борисов","doi":"10.31857/s0205-96142019589-98","DOIUrl":"https://doi.org/10.31857/s0205-96142019589-98","url":null,"abstract":"According to the results of direct interaction with various groups of consumers, it was established that the structure of requirements in all thematic areas at the present time comes to the fore geographic coverage, regularity and frequency of shooting. The second priority is to ensure the quality of the spectroradiometric characteristics in the context of their absolute performance and stability in the time series of the entire archive of the survey with the ability to provide data in physical quantities of reflectivity, or spectral brightness of the reflected radiation / brightness temperature. The requirements for spatial resolution within a separately allocated class of data, as well as the presence of a panchromatic channel are not significant for the majority of respondents. In the understanding of thematic users, the mediated requirements for the characteristics of the target remote sensing equipment are formed through direct requirements for the initial remote sensing data. When creating a promising ERS satellite on the part of the state customer, it is advisable to conduct regular advanced studies of user expectations and preferences in order to fully coordinate and integrate them into technical specifications for various products of the space system. In general, for effective generalization of various, often opposite, functional expectations, it is advisable to conduct a comprehensive discussion that provides a feedback mechanism from both authorized representatives of main consumers and developers of target equipment and space remote sensing systems.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"776 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123890798","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}
Pub Date : 2019-11-05DOI: 10.31857/s0205-96142019550-58
V. M. Fedorov, Виктор Федоров, S. Sokratov, С А Сократов, D. Frolov, Д.М. Фролов
Satellite measurements of total flow of upcoming to the Earth solar radiation (Total solar irradiance) are performed since 1977. At present time continues measurement series of total flow of upcoming solar radiation are obtained. In long-term measurements of solar radiation the eleven-year cycle and its amplitude is revealed. However in regularity of solar radiation income to the Earth (without consideration of atmosphere) and spatial distribution of it along the Earth surface (solar climate of the Earth) two mechanisms having different physical nature are marked out. One mechanism is related to variation of solar activity. Another mechanism is defined by celestial mechanical processes varying elements of Earth orbit (Earth-Sun distance, tropical year duration, etc.), Earth rotation axis declination and related to it variation in Earth insolation. Performed calculations of Earth insolation related to celestial mechanical processes are the basis for differentiation of remote sensing data on total solar irradiance regarding mechanisms of different physical nature. The possibility of estimation of contribution of solar activity and celestial mechanical processes in variation of total flow of upcoming to the Earth solar radiation is created.
{"title":"Alteration tendencies of upcoming on the upper atmosphere boundary solar radiation and theirs spatial localization","authors":"V. M. Fedorov, Виктор Федоров, S. Sokratov, С А Сократов, D. Frolov, Д.М. Фролов","doi":"10.31857/s0205-96142019550-58","DOIUrl":"https://doi.org/10.31857/s0205-96142019550-58","url":null,"abstract":"Satellite measurements of total flow of upcoming to the Earth solar radiation (Total solar irradiance) are performed since 1977. At present time continues measurement series of total flow of upcoming solar radiation are obtained. In long-term measurements of solar radiation the eleven-year cycle and its amplitude is revealed. However in regularity of solar radiation income to the Earth (without consideration of atmosphere) and spatial distribution of it along the Earth surface (solar climate of the Earth) two mechanisms having different physical nature are marked out. One mechanism is related to variation of solar activity. Another mechanism is defined by celestial mechanical processes varying elements of Earth orbit (Earth-Sun distance, tropical year duration, etc.), Earth rotation axis declination and related to it variation in Earth insolation. Performed calculations of Earth insolation related to celestial mechanical processes are the basis for differentiation of remote sensing data on total solar irradiance regarding mechanisms of different physical nature. The possibility of estimation of contribution of solar activity and celestial mechanical processes in variation of total flow of upcoming to the Earth solar radiation is created.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134151215","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}
Pub Date : 2019-08-17DOI: 10.31857/s0205-96142019494
Board of the journal Issledovanie zemli iz kosmosa
Anatoly Tikhonovich Zverev (on the 80th Anniversary)
阿纳托利·季洪诺维奇·兹韦列夫(80周年纪念)
{"title":"Anatoly Tikhonovich Zverev (on the 80th Anniversary)","authors":"Board of the journal Issledovanie zemli iz kosmosa","doi":"10.31857/s0205-96142019494","DOIUrl":"https://doi.org/10.31857/s0205-96142019494","url":null,"abstract":"Anatoly Tikhonovich Zverev (on the 80th Anniversary)","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115706936","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}
Pub Date : 2019-08-17DOI: 10.31857/S0205-96142019460-86
Shibing Zhu, Ш Жу, Y. Qu, И Чю, Yingzhu Liu, И Лю, D. Dobrynin, Д. В. Добрынин, O. Sukhova, Олена В. Сухова, I. Kotlov, И П Котлов, R. Sandlersky, Р Б Сандлерский, A. Yachmennikova, А. А. Ячменникова, V. Rozhnov, В. В. Рожнов
Today the population of the Amur tiger (Panthera tigris altaica) in the Russian Far East is being restored, young individuals are spread within the historical range, including the territory of China. Here the assessment of the territories suitability that exists at Northeastern China as the habitat of the Amur tiger and its food supply (three species of ungulates – wild boar, red deer and roe deer) are shown. Basically a specially protected area is chosen – the Taipingou National Park, located on the border of the Public Republic of China and Russia. The modeling of habitat suitability for ungulates was carried out on the basis of remote sensing data (Earth remote sensing) by using two different approaches – expert geo-information assessment of the territory and discriminant analysis modeling. The modeling of the suitability of ungulate habitats without the variability of plant communities based on discriminant analysis and showed a small difference between the model results for wild boar and roe deer. Nevertheless, the connection with the morphometric characteristics of the relief is more important for the wild boar than for the roe deer, and for the roe deer there is a variability of vegetation types more important. The results of the analysis that included the type of biotopes, showed that the wild boar prefers the central and northern parts of the Taipingou National Park, while the roe deer is the western part of the park; red deer is more common in the southern part of the park.
{"title":"The structure of the amur tiger (panthera tigris altaica) potential habitats and evaluation of its prey in the Taipingou national park (China) based on remote sensing data","authors":"Shibing Zhu, Ш Жу, Y. Qu, И Чю, Yingzhu Liu, И Лю, D. Dobrynin, Д. В. Добрынин, O. Sukhova, Олена В. Сухова, I. Kotlov, И П Котлов, R. Sandlersky, Р Б Сандлерский, A. Yachmennikova, А. А. Ячменникова, V. Rozhnov, В. В. Рожнов","doi":"10.31857/S0205-96142019460-86","DOIUrl":"https://doi.org/10.31857/S0205-96142019460-86","url":null,"abstract":"Today the population of the Amur tiger (Panthera tigris altaica) in the Russian Far East is being restored, young individuals are spread within the historical range, including the territory of China. Here the assessment of the territories suitability that exists at Northeastern China as the habitat of the Amur tiger and its food supply (three species of ungulates – wild boar, red deer and roe deer) are shown. Basically a specially protected area is chosen – the Taipingou National Park, located on the border of the Public Republic of China and Russia. The modeling of habitat suitability for ungulates was carried out on the basis of remote sensing data (Earth remote sensing) by using two different approaches – expert geo-information assessment of the territory and discriminant analysis modeling. The modeling of the suitability of ungulate habitats without the variability of plant communities based on discriminant analysis and showed a small difference between the model results for wild boar and roe deer. Nevertheless, the connection with the morphometric characteristics of the relief is more important for the wild boar than for the roe deer, and for the roe deer there is a variability of vegetation types more important. The results of the analysis that included the type of biotopes, showed that the wild boar prefers the central and northern parts of the Taipingou National Park, while the roe deer is the western part of the park; red deer is more common in the southern part of the park.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125223368","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}
Pub Date : 2019-08-17DOI: 10.31857/S0205-96142019448-59
S. Lysenko, С. А. Лысенко
A low-parametric model of crop biomass dynamics using the data of satellite remote sensing of terrestrial vegetation index and routine meteorological observations is developed. Modeling is performed with a data filtered by yield-correlation image masking technique. The simulation is based on the Monteith equation for carbon dynamics in terrestrial ecosystems. Meteorological parameters that have an effect on the photosynthesis intensity but rarely measured directly are calculated on the basis of analytical parameterizations obtained from reanalysis data. A validity of the model is demonstrated by the example of satellite monitoring of the spring wheat yield in the regions of the Republic of Belarus.
{"title":"Crop yield forecasting based on the satellite monitoring of carbon dynamics in terrestrial ecosystems","authors":"S. Lysenko, С. А. Лысенко","doi":"10.31857/S0205-96142019448-59","DOIUrl":"https://doi.org/10.31857/S0205-96142019448-59","url":null,"abstract":"A low-parametric model of crop biomass dynamics using the data of satellite remote sensing of terrestrial vegetation index and routine meteorological observations is developed. Modeling is performed with a data filtered by yield-correlation image masking technique. The simulation is based on the Monteith equation for carbon dynamics in terrestrial ecosystems. Meteorological parameters that have an effect on the photosynthesis intensity but rarely measured directly are calculated on the basis of analytical parameterizations obtained from reanalysis data. A validity of the model is demonstrated by the example of satellite monitoring of the spring wheat yield in the regions of the Republic of Belarus.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123673830","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}
Pub Date : 2019-08-17DOI: 10.31857/S0205-96142019429-39
A. Polonsky, А Б Полонский, A. Serebrennikov, Андрей Николаевич Серебренников
The paper examines the issue on the long-term trends in the sea surface temperature (SST) in the Benguela upwelling zone and their causes using the daily SST satellite data for 1985–2017’s and the daily near-surface wind for 1988–2017”s. It is shown that in the Benguela upwelling region, there is a significant intensification of driving winds in the last 20 yrs. This is accompanied by a decrease of the thermal upwelling index (taking into account the sign of the index or an increase of its absolute values) in the southern part of the Benguela upwelling, but practically does not influence this indicator in its northern part. The likely reason for this difference is the change in the wind field structure, as a result of which there are opposite trends in the magnitude of the vorticity of the tangential wind stress in different parts of the Benguela upwelling. In the southern part of the Benguela upwelling, both the Ekman’s upwelling and the vertical velocities due to the vorticity of the driving wind intensify, while in the northern part the corresponding trends have the opposite signs. This leads to a partial compensation of these two effects in the northern part of the Benguela upwelling. The reason for the change in the wind field structure is the displacement of the center of the Subtropical High to the south-east and the concomitant reversal of the near-surface wind vector in the coastal zone.
{"title":"On the changes in the sea surface temperature in the benguela upwelling region. Part 2: the long-term tendencies","authors":"A. Polonsky, А Б Полонский, A. Serebrennikov, Андрей Николаевич Серебренников","doi":"10.31857/S0205-96142019429-39","DOIUrl":"https://doi.org/10.31857/S0205-96142019429-39","url":null,"abstract":"The paper examines the issue on the long-term trends in the sea surface temperature (SST) in the Benguela upwelling zone and their causes using the daily SST satellite data for 1985–2017’s and the daily near-surface wind for 1988–2017”s. It is shown that in the Benguela upwelling region, there is a significant intensification of driving winds in the last 20 yrs. This is accompanied by a decrease of the thermal upwelling index (taking into account the sign of the index or an increase of its absolute values) in the southern part of the Benguela upwelling, but practically does not influence this indicator in its northern part. The likely reason for this difference is the change in the wind field structure, as a result of which there are opposite trends in the magnitude of the vorticity of the tangential wind stress in different parts of the Benguela upwelling. In the southern part of the Benguela upwelling, both the Ekman’s upwelling and the vertical velocities due to the vorticity of the driving wind intensify, while in the northern part the corresponding trends have the opposite signs. This leads to a partial compensation of these two effects in the northern part of the Benguela upwelling. The reason for the change in the wind field structure is the displacement of the center of the Subtropical High to the south-east and the concomitant reversal of the near-surface wind vector in the coastal zone.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131747577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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