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Uncertainty in Upscaling In Situ Soil Moisture Observations to Multiscale Pixel Estimations with Kriging at the Field Level
2018
ISPRS International Journal of Geo-Information
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Upscaling in situ soil moisture observations (ISMO) to multiscale pixel estimations with kriging is a key step in the comprehensive usage of ISMO and remote sensing (RS) soil moisture data. ...
When the target scale is shorter than the range, BK maintains similar scale effects and global trends during upscaling processes, and the direct pixel estimation by BK is relatively close to the average ...
Conflicts of Interest: The authors declare that there are no conflicts of interest. ...
doi:10.3390/ijgi7010033
fatcat:wdjkaqnoxjaprgdzbnmr6hzjty
Upscaling In Situ Soil Moisture Observations to Pixel Averages with Spatio-Temporal Geostatistics
2015
Remote Sensing
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A key step in the validation process is to upscale point-scale, ground-based soil moisture observations to satellite-scale pixel averages. ...
The approach is illustrated with a real-world application for upscaling in situ soil moisture observations for validating the OPEN ACCESS ...
Conclusions Upscaling ground-based soil moisture observations to satellite or airborne footprint-scale estimates is an essential problem in remote sensing soil moisture product validation. ...
doi:10.3390/rs70911372
fatcat:jnmpdg7drvgftlbks2aw5z2vhy
Estimating field-scale root zone soil moisture using the cosmic-ray neutron probe
2016
Hydrology and Earth System Sciences
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Area-averaged soil moisture was assessed using a cosmic-ray neutron probe. ...
Based upon its observed performance and its minimal data requirements, it is concluded that the exponential filter method has the most potential for estimating root zone soil moisture from cosmic-ray neutron ...
Funding for this research was provided by the Natural Sciences and Engineering Research Council of Canada (NSERC) through a discovery grant awarded to A. ...
doi:10.5194/hess-20-1373-2016
fatcat:xj2x2ce52japhlgrr6fmxfzueq
Estimating field scale root zone soil moisture using the cosmic-ray neutron probe
2015
Hydrology and Earth System Sciences Discussions
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Area-averaged soil moisture was assessed using a cosmic-ray neutron probe. ...
It is concluded that the exponential filter method has the most potential for estimating root zone soil moisture from cosmic-ray neutron probe data. ...
Funding for this research was provided by the Natural Sciences and Engineering Research Council of Canada (NSERC) through a discovery grant awarded to A. ...
doi:10.5194/hessd-12-12789-2015
fatcat:mfsrnntnnvf2hhd4riebewcx5m
Upscaling sparse ground-based soil moisture observations for the validation of coarse-resolution satellite soil moisture products
2012
Reviews of Geophysics
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2012), Upscaling sparse ground-based soil moisture observations for the validation of coarse-resolution satellite soil moisture products, Rev. Geophys., 50, RG2002, ...
The network was designed to obtain multiscale estimates of surface soil moisture for remote sensing validation purposes. ...
The following simple framework is used to classify these approaches. ...
doi:10.1029/2011rg000372
fatcat:crgbbdblxne3na72yx7ewsphmm
Estimating and Up-Scaling Fuel Moisture and Leaf Dry Matter Content of a Temperate Humid Forest Using Multi Resolution Remote Sensing Data
2016
Remote Sensing
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In conclusion, we suggest that upscaling is necessary for solving the scale discrepancy problems between the indicators and low spatial resolution MODIS data. ...
Once satisfactory results in estimating MCI were obtained by using ANN from ETM+ data, these data were then upscaled to estimate MCI using MODIS data for daily monitoring of leaf water and leaf dry matter ...
Acknowledgments: We acknowledge the Ministry of Education Malaysia (through research grant Q.J130000.2427.02G20 and Q.J130000.2527.13H44) for providing funding to conduct the study. ...
doi:10.3390/rs8110961
fatcat:dayt42rei5funfiu6xccy3qye4
Enhancing PTFs with remotely sensed data for multi-scale soil water retention estimation
2011
Journal of Hydrology
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Final results show good promise of the suitability of this Bayesian Neural Network approach for soil hydraulic parameter estimation across spatial scales using ground-, air-, or space-based remotely sensed ...
s u m m a r y Use of remotely sensed data products in the earth science and water resources fields is growing due to increasingly easy availability of the data. ...
Acknowledgements We acknowledge the partial support of Los Alamos National Lab, NASA Earth System Science Fellowship (NNX06AF95H), Na ...
doi:10.1016/j.jhydrol.2010.12.043
fatcat:25kfvyznobgmlirdtmnfpjitm4
Estimating Annual Water Storage Variations Using Microwave-based Soil Moisture Retrievals
2016
Hydrology and Earth System Sciences Discussions
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This suggests the possibility of using (relatively) higher-resolution microwave remote sensing to enhance the spatial resolution of <i>S</i> estimates acquired from gravity remote sensing. ...
Due to their shallow vertical support, remotely-sensed surface soil moisture retrievals are commonly regarded as being of limited value for water budget applications requiring the characterization of temporal ...
dS/dt estimates (acquired from microwave remote 20 sensing of soil moisture) to close the inter-annual terrestrial water balance. ...
doi:10.5194/hess-2016-572
fatcat:v56pdnwmrnchzjltqe52fccatq
GRACE Hydrological estimates for small basins: Evaluating processing approaches on the High Plains Aquifer, USA
2010
Water Resources Research
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approaches the GRACE resolution limit of a few hundred km. ...
However, when focusing on a region of interest, limited spatial resolution and noise contamination can cause estimation bias and spatial leakage, problems that are exacerbated as the region of interest ...
Wedin for making available soil moisture measurements for this study. We thank F. Simon for fruitful discussion on spatiospectral localization. ...
doi:10.1029/2009wr008564
fatcat:7ishhwti6zamzoz7oz4bifjjge
Improving Soil Moisture Estimation with a Dual Ensemble Kalman Smoother by Jointly Assimilating AMSR-E Brightness Temperature and MODIS LST
2017
Remote Sensing
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The results demonstrate the potential of assimilating AMSR-E TB and MODIS LST to improve the estimation of soil moisture and related parameters. ...
Compared with in situ measurements, the accuracy of soil moisture estimation derived from the assimilation experiment has been tremendously improved at a variety of scales. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/rs9030273
fatcat:sfw3z2fdunct7eftpw3oygf6j4
Validation of Regional-Scale Remote Sensing Products in China: From Site to Network
2016
Remote Sensing
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Validation is mandatory to quantify the reliability of remote sensing products (RSPs). ...
in validating various land RSPs, particularly aiming to further develop in situ sampling schemes and scaling approaches to acquire ground truth at the pixel scale over heterogeneous surfaces; (2) sound ...
Acknowledgments: This research was supported by the Natural Science Foundation of China projects ...
doi:10.3390/rs8120980
fatcat:yuvycxfe2vcidj6zj2omvnaqqu
Estimating annual water storage variations in medium-scale (2000–10 000 km2) basins using microwave-based soil moisture retrievals
2017
Hydrology and Earth System Sciences
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</strong> Due to their shallow vertical support, remotely sensed surface soil moisture retrievals are commonly regarded as being of limited value for water budget applications requiring the characterization ...
This suggests the possibility of using (relatively) higher-resolution microwave remote sensing products to enhance the spatial resolution of d<i>S</i><span class="thinspace"></span>∕<span class="thinspace ...
The research was partially supported by a grant from the NASA Applied Sciences Water Resources Program (award number: NNX12AK90G). ...
doi:10.5194/hess-21-1849-2017
fatcat:fyccm6wp2nf27p55elgy7a2bbq
Consistency between hydrological model, large aperture scintillometer and remote sensing based evapotranspiration estimates for a heterogeneous catchment
2012
Hydrology and Earth System Sciences
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radiation (<i>R</i><sub>n</sub>) and ground heat flux (<i>G</i>) upscaled to catchment average through the use of TOPLATS, a physically based land surface model. ...
</strong> The catchment averaged actual evapotranspiration rate is a hydrologic model variable that is difficult to quantify. ...
to the Flanders Geographical Information Agency for providing the soil texture, land use and DEM maps. ...
doi:10.5194/hess-16-2095-2012
fatcat:zleggty2i5asnm2cezh2dqpfzi
Consistency between hydrological model, large aperture scintillometer and remote sensing based evapotranspiration estimates for a heterogeneous catchment
2011
Hydrology and Earth System Sciences Discussions
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radiation (R n ) and ground heat flux (G) upscaled to catchment average through the use of TOPLATS, a physically based land surface model. ...
The catchment averaged actual evapotranspiration rate is a hydrologic model variable that is difficult to quantify. ...
to the Flanders Geographical Information Agency for providing the soil texture, land use and DEM maps. ...
doi:10.5194/hessd-8-10863-2011
fatcat:fbl4igtclvbmrh5pw7gv3sn63q
Actual Evapotranspiration from UAV Images: A Multi-Sensor Data Fusion Approach
2021
Remote Sensing
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Therefore, this study focused on a multi-sensor data fusion approach for ETa estimation (MSDF-ET) independent of thermal sensors. ...
main image processing is applied on Landsat images with coarser spatial resolutions. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/rs13122315
fatcat:nmhml2fq6zg6rpmoi7xc2qk2oa
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