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The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau
Li, CW (Li, Chengwei)1,2; Lu, H (Lu, Hui)1,2; Yang, K (Yang, Kun)1,2,3,4; Han, ML (Han, Menglei)1,2; Wright, JS (Wright, Jonathon S.)1,2; Chen, YY (Chen, Yingying)3,4; Yu, L (Yu, Le)1,2; Xu, SM (Xu, Shiming)1,2; Huang, XM (Huang, Xiaomeng)1,2; Gong, W (Gong, Wei)5
Source PublicationREMOTE SENSING
2018-04-01
Volume10Issue:4Pages:文献号 535
DOI10.3390/rs10040535
Abstract

The Soil Moisture Active Passive (SMAP) mission was designed to provide a global mapping of soil moisture (SM) measured by L-band passive and active microwave sensors. In this study, we evaluate the newly released SMAP enhanced SM products over the Tibetan Plateau by performing comparisons among SMAP standard products, in-situ observations and Community Land Model (CLM) simulations driven by high-resolution meteorological forcing. At local scales, the enhanced SMAP products, the standard products and CLM simulations all generally compare well with the in-situ observations. The SMAP products show stronger correlations (0.64-0.88) but slightly larger unbiased root mean square errors (ubRMSE, -0.06) relative to the CLM simulations (0.58-0.79 and 0.037-0.047, for correlation and ubRMSE, respectively). At the regional scale, both SMAP products show similar spatial distributions of SM on the TP (Tibetan Plateau), although, as expected, the enhanced product provides more fine details. The SMAP enhanced product is in good agreement with model simulations with respect to temporal and spatial variations in SM over most of the TP. Regions with low correlation between SMAP enhanced products and model simulations are mainly located in the northwestern TP and regions of complex topography, where meteorological stations are sparse and non-existent or elevation is highly variable. In such remote regions, CLM simulations may be problematic due to inaccurate land cover maps and/or uncertainties in meteorological forcing. The independent, high-resolution observations provided by SMAP could help to constrain the model simulation and, ultimately, improve the skill of models in these problematic regions.

Subject Area地理学
WOS IDWOS:000435187500047
Language英语
Indexed BySCIE
KeywordRetrievals Validation Satellite Network Smos Assimilation Sentinel-1 Dataset Amsr2
WOS Research AreaRemote Sensing
WOS SubjectRemote Sensing
Cooperation Status国际
ISSN2072-4292
Department环境变化与地表过程重点实验室
PublisherMDPI
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8679
Collection图书馆
Corresponding AuthorLu, H (Lu, Hui)
Affiliation1.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing 100084, Peoples R China;
2.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
5.Beijing Normal Univ, Fac Geog Sci, Inst Land Surface Syst & Sustainable Dev, Beijing 100875, Peoples R China.
Recommended Citation
GB/T 7714
Li, CW ,Lu, H ,Yang, K ,et al. The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau[J]. REMOTE SENSING,2018,10(4):文献号 535.
APA Li, CW .,Lu, H .,Yang, K .,Han, ML .,Wright, JS .,...&Gong, W .(2018).The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau.REMOTE SENSING,10(4),文献号 535.
MLA Li, CW ,et al."The Evaluation of SMAP Enhanced Soil Moisture Products Using High-Resolution Model Simulations and In-Situ Observations on the Tibetan Plateau".REMOTE SENSING 10.4(2018):文献号 535.
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