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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  
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

Jianghao Wang, Yong Ge, Gerard Heuvelink, Chenghu Zhou
2015 Remote Sensing  
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

Amber M. Peterson, Warren D. Helgason, Andrew M. Ireson
2016 Hydrology and Earth System Sciences  
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

A. M. Peterson, W. D. Helgason, A. M. Ireson
2015 Hydrology and Earth System Sciences Discussions  
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

Wade T. Crow, Aaron A. Berg, Michael H. Cosh, Alexander Loew, Binayak P. Mohanty, Rocco Panciera, Patricia de Rosnay, Dongryeol Ryu, Jeffrey P. Walker
2012 Reviews of Geophysics  
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

Hamed Adab, Kasturi Devi Kanniah, Jason Beringer
2016 Remote Sensing  
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

Raghavendra B. Jana, Binayak P. Mohanty
2011 Journal of Hydrology  
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

Wade T. Crow, Eunjin Han, Dongryeol Ryu, Christopher R. Hain, Martha C. Anderson
2016 Hydrology and Earth System Sciences Discussions  
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

Laurent Longuevergne, Bridget R. Scanlon, Clark R. Wilson
2010 Water Resources Research  
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

Weijing Chen, Huanfeng Shen, Chunlin Huang, Xin Li
2017 Remote Sensing  
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

Shuguo Wang, Xin Li, Yong Ge, Rui Jin, Mingguo Ma, Qinhuo Liu, Jianguang Wen, Shaomin Liu
2016 Remote Sensing  
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

Wade T. Crow, Eunjin Han, Dongryeol Ryu, Christopher R. Hain, Martha C. Anderson
2017 Hydrology and Earth System Sciences  
</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

B. Samain, G. W. H. Simons, M. P. Voogt, W. Defloor, N.-J. Bink, V. R. N. Pauwels
2012 Hydrology and Earth System Sciences  
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

B. Samain, G. W. H. Simons, M. P. Voogt, W. Defloor, N.-J. Bink, V. R. N. Pauwels
2011 Hydrology and Earth System Sciences Discussions  
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

Ali Mokhtari, Arman Ahmadi, Andre Daccache, Kelley Drechsler
2021 Remote Sensing  
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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