NAOC Open IR
Pan-tropical soil moisture mapping based on a three-layer model from CYGNSS GNSS-R data
Yan, Qingyun1; Huang, Weimin2; Jin, Shuanggen1,3; Jia, Yan4
2020-09-15
Source PublicationREMOTE SENSING OF ENVIRONMENT
ISSN0034-4257
Volume247Pages:10
AbstractIn this paper, an effective schematic is developed for estimating soil moisture (SM) from CYclone Global Navigation Satellite System (CYGNSS) data. Here, a three-layer model of air, vegetation cover, and soil is considered. In practice, the surface reflectivity (Gamma) along with its statistics derived from the CYGNSS data and the ancillary vegetation opacity (tau) data from Soil Moisture Active Passive (SMAP) are employed. The expression for empirically retrieving SM from tau, Gamma and its corresponding statistics are determined through the linear regression technique. The CYGNSS data collected over the land surfaces within +/- 37 degrees (latitude) during the whole year of 2018 are investigated. The reference SM data are obtained from SMAP, and are regarded as ground-truth in this work. Validation and assessment are performed on the pan-tropical daily data collected throughout the annual circle at a resolution of 36 x 36 km(2). Experimental evaluation demonstrates good consistency between the SM derived from CYGNSS data and the ground-truth, with a correlation coefficient of 0.80 and a root-mean-square error of 0.07 cm(3)/cm(3). This method succeeds in providing SM estimations on a pan-tropical scale that does not rely on ongoing knowledge of SM and merely employs the least ancillary data. Furthermore, the intense temporal and spatial coverages of CYGNSS SM results are also illustrated. The use of CYGNSS SM significantly enhances the pan-tropical coverage of SMAP SM by about 22% on average. The satisfactory outcomes achieved here prove CYGNSS as an efficient complementary tool for pan-tropical SM sensing on a daily basis.
KeywordGNSS-Reflectometry CYGNSS Soil moisture SMAP
Funding OrganizationStrategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project
DOI10.1016/j.rse.2020.111944
WOS KeywordSURFACE-ROUGHNESS ; GPS SIGNALS ; REFLECTIVITY ; SCATTERING ; SENSITIVITY ; RETRIEVAL ; OCEAN
Language英语
Funding ProjectStrategic Priority Research Program Project of the Chinese Academy of Sciences[XDA23040100] ; Jiangsu Province Distinguished Professor Project[R2018T20] ; Startup Foundation for Introducing Talent of NUIST[2018R037] ; Natural Sciences and Engineering Research Council of Canada[NSERC RGPIN-2017-04508] ; Natural Sciences and Engineering Research Council of Canada[RGPAS-2017507962] ; Canadian Space Agency CubeSat Grant[17CCPNFL11] ; Natural Science Foundation of Jiangsu Province[BK20180765] ; Shanghai Leading Talent Project
Funding OrganizationStrategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Strategic Priority Research Program Project of the Chinese Academy of Sciences ; Jiangsu Province Distinguished Professor Project ; Jiangsu Province Distinguished Professor Project ; Startup Foundation for Introducing Talent of NUIST ; Startup Foundation for Introducing Talent of NUIST ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Canadian Space Agency CubeSat Grant ; Canadian Space Agency CubeSat Grant ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Jiangsu Province ; Shanghai Leading Talent Project ; Shanghai Leading Talent Project
WOS Research AreaEnvironmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000549189200043
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82654
Collection中国科学院国家天文台
Corresponding AuthorHuang, Weimin
Affiliation1.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Peoples R China
2.Mem Univ, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada
3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
4.Nanjing Univ Posts & Telecommun, Dept Surveying & Geoinformat, Nanjing 210023, Peoples R China
Recommended Citation
GB/T 7714
Yan, Qingyun,Huang, Weimin,Jin, Shuanggen,et al. Pan-tropical soil moisture mapping based on a three-layer model from CYGNSS GNSS-R data[J]. REMOTE SENSING OF ENVIRONMENT,2020,247:10.
APA Yan, Qingyun,Huang, Weimin,Jin, Shuanggen,&Jia, Yan.(2020).Pan-tropical soil moisture mapping based on a three-layer model from CYGNSS GNSS-R data.REMOTE SENSING OF ENVIRONMENT,247,10.
MLA Yan, Qingyun,et al."Pan-tropical soil moisture mapping based on a three-layer model from CYGNSS GNSS-R data".REMOTE SENSING OF ENVIRONMENT 247(2020):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yan, Qingyun]'s Articles
[Huang, Weimin]'s Articles
[Jin, Shuanggen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yan, Qingyun]'s Articles
[Huang, Weimin]'s Articles
[Jin, Shuanggen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yan, Qingyun]'s Articles
[Huang, Weimin]'s Articles
[Jin, Shuanggen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.