An Algorithm for Retrieving Soil Moisture Using L-Band H-Polarized Multiangular Brightness Temperature Data

	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
刊名	IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
	2016
卷号	13 期号:9 页码:1295-1299
关键词	L-band multiangular passive microwave soil moisture surface reflectivity model
ISSN号	1545-598X
通讯作者	Cui, Q (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
英文摘要	This 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.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/5606]
专题	国家空间科学中心_微波遥感部
推荐引用方式 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.(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.