气候变化领域集成服务门户(CCPortal): Using lagged dependence to identify (de)coupled surface and subsurface soil moisture values

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DOI	10.5194/hess-22-2255-2018
	Using lagged dependence to identify (de)coupled surface and subsurface soil moisture values
	Carranza C.D.U.; Van Der Ploeg M.J.; Torfs P.J.J.F.
发表日期	2018
ISSN	1027-5606
起始页码	2255
结束页码	2267
卷号	22 期号:4
英文摘要	Recent advances in radar remote sensing popularized the mapping of surface soil moisture at different spatial scales. Surface soil moisture measurements are used in combination with hydrological models to determine subsurface soil moisture values. However, variability of soil moisture across the soil column is important for estimating depth-integrated values, as decoupling between surface and subsurface can occur. In this study, we employ new methods to investigate the occurrence of (de)coupling between surface and subsurface soil moisture. Using time series datasets, lagged dependence was incorporated in assessing (de)coupling with the idea that surface soil moisture conditions will be reflected at the subsurface after a certain delay. The main approach involves the application of a distributed-lag nonlinear model (DLNM) to simultaneously represent both the functional relation and the lag structure in the time series. The results of an exploratory analysis using residuals from a fitted loess function serve as a posteriori information to determine (de)coupled values. Both methods allow for a range of (de)coupled soil moisture values to be quantified. Results provide new insights into the decoupled range as its occurrence among the sites investigated is not limited to dry conditions. © Author(s) 2018.
语种	英语
scopus关键词	Remote sensing; Time series; Depth integrated; Exploratory analysis; Functional relation; Hydrological models; Non-linear model; Radar remote sensing; Subsurface soil; Surface soil moisture; Soil moisture; hydrological modeling; radar; remote sensing; soil column; soil moisture; subsurface flow; time series analysis
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160058
作者单位	Carranza, C.D.U., Soil Physics and Land Management Group, Wageningen University, Wageningen, Netherlands; Van Der Ploeg, M.J., Soil Physics and Land Management Group, Wageningen University, Wageningen, Netherlands; Torfs, P.J.J.F., Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, Netherlands
推荐引用方式 GB/T 7714	Carranza C.D.U.,Van Der Ploeg M.J.,Torfs P.J.J.F.. Using lagged dependence to identify (de)coupled surface and subsurface soil moisture values[J],2018,22(4).
APA	Carranza C.D.U.,Van Der Ploeg M.J.,&Torfs P.J.J.F..(2018).Using lagged dependence to identify (de)coupled surface and subsurface soil moisture values.Hydrology and Earth System Sciences,22(4).
MLA	Carranza C.D.U.,et al."Using lagged dependence to identify (de)coupled surface and subsurface soil moisture values".Hydrology and Earth System Sciences 22.4(2018).