DOI: 10.1016/j.jhydrol.2020.124717
论文题名: Retrieving global surface soil moisture from GRACE satellite gravity data
作者: Sadeghi M. ; Gao L. ; Ebtehaj A. ; Wigneron J.-P. ; Crow W.T. ; Reager J.T. ; Warrick A.W.
刊名: Journal of Hydrology
ISSN: 221694
出版年: 2020
卷: 584 语种: 英语
英文关键词: GRACE
; Richards’ equation
; SMAP
; SMOS
; Soil moisture
; Terrestrial water storage
Scopus关键词: Digital storage
; Geodetic satellites
; Microwaves
; Partial discharges
; Radio interference
; Radio waves
; Remote sensing
; GRACE
; Gravity recovery and climate experiment satellites
; Passive microwave radiometry
; SMAP
; SMOS
; Soil moisture active passive (SMAP)
; Soil Moisture and Ocean Salinity (SMOS)
; Terrestrial water storage
; Soil moisture
; GRACE
; microwave radiometer
; parsimony analysis
; radio wave
; remote sensing
; Richards equation
; satellite data
; SMOS
; soil moisture
; vegetation mapping
; water storage
英文摘要: Passive microwave radiometry from space through missions such as the Soil Moisture and Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP) satellites is the most reliable means for mapping global surface soil moisture (SSM). Nonetheless, microwave SSM retrievals are uncertain over densely vegetated surfaces or areas with high radio frequency interference. This paper presents a new observationally driven approach to remote sensing of global SSM based on the terrestrial water storage anomaly (TWSA) data acquired from the Gravity Recovery and Climate Experiment (GRACE) satellite. This approach rests on a physically based, yet parsimonious, model based on the Richards’ equation and the assumption that the TWSA temporal rate of change (dS/dt) approximates the land surface net water flux (NWF) as the surface boundary condition. The GRACE-based SSM is found to be in a reasonable agreement with in-situ data and highly correlated with the SMAP and SMOS retrievals, especially over wet regions where the assumption of NWF ≈ dS/dt holds valid. The GRACE retrievals contain new SSM information relative to the microwave satellite data and provide a potential solution to improve the microwave data over densely vegetated surfaces or areas with high radio frequency interference. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158269
Appears in Collections: 气候变化与战略
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作者单位: Dept. Civil, Environmental and Geo-Engineering, University of Minnesota, Minneapolis, MN, United States; ISPA, UMR 1391, INRA Nouvelle-Aquitaine, Bordeaux Villenave d'Ornon, France; USDA-ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Environmental Science, The University of Arizona, Tucson, AZ, United States
Recommended Citation:
Sadeghi M.,Gao L.,Ebtehaj A.,et al. Retrieving global surface soil moisture from GRACE satellite gravity data[J]. Journal of Hydrology,2020-01-01,584