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Evaluation of Satellite-Based Soil Moisture Products over Four Different Continental In-Situ Measurements
Liu, Yangxiaoyue1,2; Yang, Yaping1,3; Yue, Xiafang1,3
2018-07-01
Source PublicationREMOTE SENSING
ISSN2072-4292
Volume10Issue:7Pages:27
Corresponding AuthorYang, Yaping(yangyp@igsnrr.ac.cn)
AbstractGlobal, near-real-time satellite-based soil moisture (SM) datasets have been developed over recent decades. However, there has been a lack of comparison among different passing times, retrieving algorithms, and sensors between SM products over various regions. In this study, we assessed seven types of SM products (AMSR_A, AMSR_D, ECV_A, ECV_C, ECV_P, SMOS_A, and SMOS_D) over four different continental in-situ networks in North America, the Tibetan Plateau, Western Europe, and Southeastern Australia. Bias, R, root mean square error (RMSE), unbiased root mean square difference (ubRMSD), anomalies, and anomalies R were calculated to explore the agreement between satellite-based SM and in-situ measurements. Taylor diagrams were drawn for an inter-comparison. The results showed that (1) ECV_C was superior both in characterizing the SM temporal variation tendency and absolute value, while ECV_A produced numerous abnormal values over all validation regions. ECV_P was able to basically express the SM variation tendency, except for a few overestimations and underestimations. (2) The ascending data (AMSR_A, SMOS_A) generally outperformed the corresponding descending data (AMSR_D, SMOS_D). (3) AMSR exceeded SMOS in terms of the coefficient of correlation. (4) The validation result of SMOS_D over the NAN and OZN networks was unsatisfactory, with a rather poor correlation for both original data and anomalies.
Keywordsatellite-based soil moisture in-situ measurements AMSR SMOS ECV evaluation
DOI10.3390/rs10071161
WOS KeywordE LAND OBSERVATIONS ; AMSR-E ; TIBETAN PLATEAU ; RADIOFREQUENCY INTERFERENCE ; LOESS PLATEAU ; SMOS MISSION ; 3RD POLE ; RETRIEVAL ; VALIDATION ; MODEL
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA19020304] ; Geographic Resources and Ecology Knowledge Service System of China Knowledge Center for Engineering Sciences and Technology[CKCEST-2015-1-4] ; National Special Program on Basic Science and Technology Research of China[2013FY110900] ; National Data Sharing Infrastructure of Earth System Science
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Geographic Resources and Ecology Knowledge Service System of China Knowledge Center for Engineering Sciences and Technology ; National Special Program on Basic Science and Technology Research of China ; National Data Sharing Infrastructure of Earth System Science
WOS Research AreaRemote Sensing
WOS SubjectRemote Sensing
WOS IDWOS:000440332500184
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54577
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYang, Yaping
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yangxiaoyue,Yang, Yaping,Yue, Xiafang. Evaluation of Satellite-Based Soil Moisture Products over Four Different Continental In-Situ Measurements[J]. REMOTE SENSING,2018,10(7):27.
APA Liu, Yangxiaoyue,Yang, Yaping,&Yue, Xiafang.(2018).Evaluation of Satellite-Based Soil Moisture Products over Four Different Continental In-Situ Measurements.REMOTE SENSING,10(7),27.
MLA Liu, Yangxiaoyue,et al."Evaluation of Satellite-Based Soil Moisture Products over Four Different Continental In-Situ Measurements".REMOTE SENSING 10.7(2018):27.
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