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An Algorithm for Retrieving Soil Moisture Using L-Band H-Polarized Multiangular Brightness Temperature Data
Cui, Qian; Dong, Xiaolong; Shi, Jiancheng; Zhao, Tianjie; Xiong, Chuan; Cui, Q (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
Department微波遥感部
Source PublicationIEEE GEOSCIENCE AND REMOTE SENSING LETTERS
2016
Volume13Issue:9Pages:1295-1299
ISSN1545-598X
Language英语
KeywordL-band Multiangular Passive Microwave Soil Moisture Surface Reflectivity Model
AbstractThis letter presents an algorithm for retrieving soil moisture using only H-polarized multiangular brightness temperature at L-band. We developed a parameterized surface model based on a simple-empirical model, the H-p model, for this retrieval algorithm. By analyzing a simulated database using the advanced integral equation model (AIEM), it was found that the roughness variable H-h can be parameterized as a function of an effective roughness parameter Sr = (k(L) . s)(2-N)(s/l)(N). Influences of three surface roughness parameters (e.g., rms height, correlation length, and type of autocorrelation function) required to describe a rough surface on surface reflectivity were all considered in this parameterized model. Comparison with AIEM simulations over a wide range of soil conditions indicates a good performance of this model. Then, based on the omega - t model, this algorithm is applied on refined SMOS H-polarized multiangular brightness temperature. Retrieved soil moisture in Africa exhibits reasonable patterns and temporal changes. Validation using in situ soil moisture from Little Washita watershed and Yanco over 2010-2011 showed fine accuracy with root-mean-square errors of 0.031 and 0.045 m(3)/m(3) for two areas, respectively.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5606
Collection微波遥感部
Corresponding AuthorCui, Q (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Cui, Qian,Dong, Xiaolong,Shi, Jiancheng,et al. An Algorithm for Retrieving Soil Moisture Using L-Band H-Polarized Multiangular Brightness Temperature Data[J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,2016,13(9):1295-1299.
APA Cui, Qian,Dong, Xiaolong,Shi, Jiancheng,Zhao, Tianjie,Xiong, Chuan,&Cui, Q .(2016).An Algorithm for Retrieving Soil Moisture Using L-Band H-Polarized Multiangular Brightness Temperature Data.IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,13(9),1295-1299.
MLA Cui, Qian,et al."An Algorithm for Retrieving Soil Moisture Using L-Band H-Polarized Multiangular Brightness Temperature Data".IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 13.9(2016):1295-1299.
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