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A Soil Moisture Spatial and Temporal Resolution Improving Algorithm Based on Multi-Source Remote Sensing Data and GRNN Model

Yaokui Cui, Xi Chen, Wentao Xiong, Lian He, Feng Lv, Wenjie Fan, Zengliang Luo, Yang Hong
2020 Remote Sensing  
Low spatio-temporal resolution, about 25–40 km and 2–3 days, of the commonly used global microwave SM products limits their application at regional scales.  ...  The high spatio-temporal resolution SM allows a better understanding of the diurnal and seasonal variations of SM at the regional scale, consequently enhancing ecological and hydrological applications,  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12030455 fatcat:tmo46khisrfmlljcyy6zn36y5u

Earth Observation-Based Operational Estimation of Soil Moisture and Evapotranspiration for Agricultural Crops in Support of Sustainable Water Management

George Petropoulos, Prashant Srivastava, Maria Piles, Simon Pearson
2018 Sustainability  
Global information on the spatio-temporal variation of parameters driving the Earth's terrestrial water and energy cycles, such as evapotranspiration (ET) rates and surface soil moisture (SSM), is of key  ...  For the latter, data is required at high spatial and temporal resolutions to inform decision makers on sustainable utilisation and management of water [10] .  ...  Both GPP and SP have been supported by a UK Research Council award (STFC ST/N006836/1). Thanks also to Salim Lamine for his help with the preparation of Figure 1 .  ... 
doi:10.3390/su10010181 fatcat:kott5kqlkfepnbovaualndwyce

REMOTE SENSING APPLICATIONS TO WATER RESOURCES [chapter]

D. NAGESH KUMAR
2002 Research Perspectives in Hydraulics and Water Resources Engineering  
Due to their capability to capture the spatial variations in the hydro-meteorological variables and frequent temporal resolution sufficient to represent the dynamics of the hydrologic processes, remote  ...  moisture and land surface characteristics, and to estimate fluxes such as evapotranspiration.  ...  Authors also acknowledge NASA, ESA and other organizations for the public domain images used in this paper. Received 20 March 2013.  ... 
doi:10.1142/9789812777614_0008 fatcat:w52kw3wgbzfljpfv6jkfzpmnee

Assessment of Multi-Scale SMOS and SMAP Soil Moisture Products across the Iberian Peninsula

Portal, Jagdhuber, Vall-llossera, Camps, Pablos, Entekhabi, Piles
2020 Remote Sensing  
A spatial analysis is conducted for the whole Iberian Peninsula with emphasis on the added-value that the enhanced resolution products provide based on the microwave-optical (SMOS/ERA5/MODIS) or the active–passive  ...  in 2009, and the NASA's Soil Moisture Active Passive (SMAP) launched in 2015.  ...  Passive and active microwave sensors (radiometers and radars, respectively) are sensitive to the soil dielectric constant and allow estimation of surface soil moisture (SSM) [3] .  ... 
doi:10.3390/rs12030570 fatcat:dfhrmcc4pvahveklzr4dfcvq6y

Assimilation of vegetation optical depth retrievals from passive microwave radiometry

Sujay V. Kumar, Thomas R. Holmes, Rajat Bindlish, Richard de Jeu, Christa Peters-Lidard
2020 Hydrology and Earth System Sciences  
Vegetation optical depth (VOD) retrievals from passive microwave sensors provide analog estimates of above-ground canopy biomass.  ...  The study also quantifies the relative and joint impacts of assimilating surface soil moisture and VOD from the Soil Moisture Active Passive (SMAP) mission.  ...  Though passive microwave sensors are often used for retrieving soil moisture estimates, they also enable the estimation of vegetation optical depth, an analog of above-ground canopy biomass.  ... 
doi:10.5194/hess-24-3431-2020 fatcat:iv4zk2dksrcw5lj5m6tu4ijywq

Linking Remote Sensing and Geodiversity and Their Traits Relevant to Biodiversity—Part I: Soil Characteristics

Angela Lausch, Jussi Baade, Lutz Bannehr, Erik Borg, Jan Bumberger, Sabine Chabrilliat, Peter Dietrich, Heike Gerighausen, Cornelia Glässer, Jorg M. Hacker, Dagmar Haase, Thomas Jagdhuber (+30 others)
2019 Remote Sensing  
LiDAR (light detection and ranging), thermal and microwave sensors, multispectral, and hyperspectral RS technologies to monitor soil characteristics and soil moisture are also presented.  ...  This paper gives an overview of the state-of-the-art approaches for monitoring soil characteristics and soil moisture with unmanned aerial vehicles (UAV) and air- and spaceborne remote sensing techniques  ...  Other methods retrieve vegetation variables from active microwave measurements for the utilization of passive microwave soil moisture inversion [293, 294] .  ... 
doi:10.3390/rs11202356 fatcat:eds6dxqbxractag5ktor7ssa7a

Extending the Spatio-Temporal Applicability of DISPATCH Soil Moisture Downscaling Algorithm: A Study Case Using SMAP, MODIS and Sentinel-3 Data

Nitu Ojha, Olivier Merlin, Christophe Suere, Maria José Escorihuela
2021 Frontiers in Environmental Science  
DISPATCH is a disaggregation algorithm of the low-resolution soil moisture (SM) estimates derived from passive microwave observations.  ...  In this study, DISPATCH is applied to 36 km resolution Soil Moisture Active and Passive SM data over three 50 km by 50 km areas in Spain and France to assess the effectiveness of the approach over temperate  ...  in situ soil moisture measurements for dryland areas of Spain.  ... 
doi:10.3389/fenvs.2021.555216 fatcat:xijrgyneunevpfiuz36jmc2gle

Enhancing Spatial Resolution of SMAP Soil Moisture Products Through Spatial Downscaling over a Large Watershed: A Case Study for the Susquehanna River Basin in the Northeastern United States

Shimelis Asfaw Wakigari, Robert Leconte
2022 Remote Sensing  
Soil moisture (SM) with a high spatial resolution plays a paramount role in many local and regional hydrological and agricultural applications.  ...  The advent of L-band passive microwave satellites allowed for it to be possible to measure near-surface SM at a global scale compared to in situ measurements.  ...  Among the several frequencies, the L-band passive microwave satellites (e.g., Soil Moisture and Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP)) are the most promising and primarily devoted  ... 
doi:10.3390/rs14030776 fatcat:2ulgf55eifewticxeaprq4b6ei

Assessing global surface water inundation dynamics using combined satellite information from SMAP, AMSR2 and Landsat

Jinyang Du, John S. Kimball, John Galantowicz, Seung-Bum Kim, Steven K. Chan, Rolf Reichle, Lucas A. Jones, Jennifer D. Watts
2018 Remote Sensing of Environment  
A method to assess global land surface water (fw) inundation dynamics was developed by exploiting the enhanced fw sensitivity of L-band (1.4 GHz) passive microwave observations from the Soil Moisture Active  ...  Potential soil moisture and vegetation contributions to the microwave signal were represented from overlapping higher frequency T b observations from AMSR2.  ...  using a multi-orbit approach considering temporal auto-correlation of vegetation optical depth (Al .  ... 
doi:10.1016/j.rse.2018.04.054 pmid:30050230 pmcid:PMC6055934 fatcat:xaywacpimvafblug7puoa3hqpa

A Calibration/Disaggregation Coupling Scheme for Retrieving Soil Moisture at High Spatio-Temporal Resolution: Synergy between SMAP Passive Microwave, MODIS/Landsat Optical/Thermal and Sentinel-1 Radar Data

Nitu Ojha, Olivier Merlin, Abdelhakim Amazirh, Nadia Ouaadi, Vincent Rivalland, Lionel Jarlan, Salah Er-Raki, Maria Jose Escorihuela
2021 Sensors  
Soil moisture (SM) data are required at high spatio-temporal resolution—typically the crop field scale every 3–6 days—for agricultural and hydrological purposes.  ...  Despite the pros and cons of each technique in terms of spatio-temporal resolution and their sensitivity to perturbing factors such as vegetation cover, soil roughness and meteorological conditions, there  ...  Acknowledgments: The author acknowledges NASA for freely available SMAP, MODIS, and Landsat satellite data.  ... 
doi:10.3390/s21217406 pmid:34770712 pmcid:PMC8587289 fatcat:vkbcjizeqrhr3m2o2oggkryyiq

Potential Applicability of SMAP in ECV Soil Moisture Gap-filling: A Case Study in Europe (May 2020)

Yangxiaoyue Liu, Yaping Yang, Wenlong Jing
2020 IEEE Access  
The authors would like to appreciate ESA and NASA for providing ECV and SMAP data. We also thank the ISMN for providing in-situ measurements data.  ...  And the vegetation optical depth pattern derived uncertainty estimations are carry out to construct error covariance matrices.  ...  Both SMOS and SMAP soil moisture are retrieved from Lband signals. The SMOS could be a forerunner of L-band retrieved global soil moisture with a ground resolution of 50 km [32] .  ... 
doi:10.1109/access.2020.3009977 fatcat:vrkrpwmwpfbg7anzr6ts7wjmgu

Application of a Combined Optical–Passive Microwave Method to Retrieve Soil Moisture at Regional Scale Over Chile

Andres Santamaria-Artigas, Cristian Mattar, Jean-Pierre Wigneron
2016 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
This work presents the calibration and evaluation of an optical-passive microwave method for retrieving soil moisture (SM) at regional scale using remote sensing and reanalysis data.  ...  from moderate resolution imaging spectroradiometer (MODIS), the soil temperature and water content of the first 0-7 cm of depth from the ERA-Interim reanalysis, and 13 land cover classes obtained from  ...  Data Different sources of data were used for the calibration and evaluation of the optical-passive microwave semiempirical approach ( Table I) .  ... 
doi:10.1109/jstars.2015.2512926 fatcat:upgzrwc5w5gwbmq42u66atqtoe

GEOSPATIAL ANALYSIS OF NEAR-SURFACE SOIL MOISTURE TIME SERIES DATA OVER INDIAN REGION

P. Berwal, C. S. Murthy, P.V. Raju, M. V. R. Sesha Sai
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Geospatial analysis of soil moisture and rainfall derived indicators was carried out to study (1) inter annual variability of soil moisture and rainfall, (2) soil moisture deviations from normal during  ...  Rainfall data of same spatial resolution for the same period, generated by India Meteorological Department was also procured and analyzed.  ...  Dadhwal, Director, National Remote Sensing Centre (NRSC) for his constant encouragement. Guidance and suggestions provided by Dr. P.G.  ... 
doi:10.5194/isprsarchives-xli-b7-631-2016 fatcat:xvzgz57doncwpcgd2vajluqiye

GEOSPATIAL ANALYSIS OF NEAR-SURFACE SOIL MOISTURE TIME SERIES DATA OVER INDIAN REGION

P. Berwal, C. S. Murthy, P.V. Raju, M. V. R. Sesha Sai
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Geospatial analysis of soil moisture and rainfall derived indicators was carried out to study (1) inter annual variability of soil moisture and rainfall, (2) soil moisture deviations from normal during  ...  Rainfall data of same spatial resolution for the same period, generated by India Meteorological Department was also procured and analyzed.  ...  Dadhwal, Director, National Remote Sensing Centre (NRSC) for his constant encouragement. Guidance and suggestions provided by Dr. P.G.  ... 
doi:10.5194/isprs-archives-xli-b7-631-2016 fatcat:4g5nkyizgnhhviz54wt4esmimq

Evaluation of the ESA CCI soil moisture product using ground-based observations

W.A. Dorigo, A. Gruber, R.A.M. De Jeu, W. Wagner, T. Stacke, A. Loew, C. Albergel, L. Brocca, D. Chung, R.M. Parinussa, R. Kidd
2015 Remote Sensing of Environment  
The product combines in a synergistic way the soil moisture retrievals from four passive (SMMR, SSM/I, TMI, and AMSR-E) and two active (ERS AMI and ASCAT) coarse resolution microwave sensors into a global  ...  The evaluation uses ground-based soil moisture observations of 596 sites from 28 historical and active monitoring networks worldwide.  ...  Initiative for Soil Moisture (Contract No. 4000104814/11/I-NB).  ... 
doi:10.1016/j.rse.2014.07.023 fatcat:43uavl66zrdona2gq3wpgakncm
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