Dmytry Bychkov, V. Ivanov, A. Matveyev, V. Tsymbal, S. Yatsevich
{"title":"近地表风对沙漠地区沙尘输送过程无线电波异常高方向后向散射影响的星载雷达观测","authors":"Dmytry Bychkov, V. Ivanov, A. Matveyev, V. Tsymbal, S. Yatsevich","doi":"10.15407/rej2020.01.021","DOIUrl":null,"url":null,"abstract":"Aeolian process of sand and dust transporting is known to form the near-ground surface structures over vast territories and fill the atmosphere up with suspended aerosols-like dust particles which are spread then by winds over long distances. The presence of atmospheric dust in the planet's environment is one of the factors affecting the temperature and climatic conditions of vast regions of the Earth. A number of publications (Ivanov et al., 2015; Ivanov et al., 2016; Ivanov et al., 2016; Ivanov et al., 2018) analyze the revealed effect of anomalously highly(narrow) directed backscattering of radio waves which manifests itself in radar remote sensing (in range of local irradiation angles θ ≈ 31°÷32°) in areas covered with deep sand. At the same time, there is no specific data available from published studies investigating the impact of the near-surface wind on anomalously highly-directional backscattering of radio waves based on the results of radar remote sensing researches of Aeolian sand and dust transport processes in desert regions that, in turn, could have been used later to determine the parameters of such transport process. This article presents the results of analysis of the data obtained from long-term studies of desert regions of El-Djuf, Akshar and Trarza in Mauritania by means of space-borne SAR Envisat-1. The purpose of the analysis was actually to identify the specifics of the effect that the near-surface wind has on the anomalously highly-directional backscattering of radio waves which is identified by radar based researches of Aeolian processes of sand and dust transport in desert regions, so can be used for remote determination of such transportation parameters.","PeriodicalId":52841,"journal":{"name":"Radiofizika i elektronika","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Space-borne radar observation of near-surface wind effect on anomalously highly-directional backscattering of radio waves from aeolian processes of sand and dust transporting in desert regions\",\"authors\":\"Dmytry Bychkov, V. Ivanov, A. Matveyev, V. Tsymbal, S. 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引用次数: 1
摘要
众所周知,风的沙尘输送过程会在广阔的领土上形成近地表面结构,并用悬浮的气溶胶(如尘粒)填充大气,然后通过风远距离传播。地球环境中大气尘埃的存在是影响地球广大地区温度和气候条件的因素之一。许多出版物(Ivanov等人,2015;伊万诺夫等人,2016;Ivanov et al.,2016;伊万诺夫et al.,2018)分析了在深沙覆盖地区的雷达遥感(在局部辐射角θ≈31°÷32°的范围内)中表现出的异常高(窄)定向无线电波反向散射的揭示影响。与此同时,根据对沙漠地区风沙和沙尘输送过程的雷达遥感研究结果,研究近地表风对异常高方向无线电波后向散射的影响的已发表研究中没有具体数据,本可以稍后用于确定这种传输过程的参数。本文介绍了利用星载SAR Envisat-1对毛里塔尼亚El Djuf、Akshar和Trarza沙漠地区的长期研究数据进行分析的结果。分析的目的实际上是确定近地表风对异常高方向的无线电波后向散射的影响的细节,这是通过基于雷达的沙漠地区沙尘输送过程研究确定的,因此可以用于远程确定这些输送参数。
Space-borne radar observation of near-surface wind effect on anomalously highly-directional backscattering of radio waves from aeolian processes of sand and dust transporting in desert regions
Aeolian process of sand and dust transporting is known to form the near-ground surface structures over vast territories and fill the atmosphere up with suspended aerosols-like dust particles which are spread then by winds over long distances. The presence of atmospheric dust in the planet's environment is one of the factors affecting the temperature and climatic conditions of vast regions of the Earth. A number of publications (Ivanov et al., 2015; Ivanov et al., 2016; Ivanov et al., 2016; Ivanov et al., 2018) analyze the revealed effect of anomalously highly(narrow) directed backscattering of radio waves which manifests itself in radar remote sensing (in range of local irradiation angles θ ≈ 31°÷32°) in areas covered with deep sand. At the same time, there is no specific data available from published studies investigating the impact of the near-surface wind on anomalously highly-directional backscattering of radio waves based on the results of radar remote sensing researches of Aeolian sand and dust transport processes in desert regions that, in turn, could have been used later to determine the parameters of such transport process. This article presents the results of analysis of the data obtained from long-term studies of desert regions of El-Djuf, Akshar and Trarza in Mauritania by means of space-borne SAR Envisat-1. The purpose of the analysis was actually to identify the specifics of the effect that the near-surface wind has on the anomalously highly-directional backscattering of radio waves which is identified by radar based researches of Aeolian processes of sand and dust transport in desert regions, so can be used for remote determination of such transportation parameters.