Scientific Commons: Niko Verhoest

Optimization of Soil Hydraulic Model Parameters Using Synthetic Aperture Radar Data: An Integrated Multidisciplinary Approach (2009)

Pauwels, Valentijn, Balenzano, Anna, Satalino, Giuseppe, Skriver, Henning, Verhoest, Niko, Mattia, Francesco

It is widely recognized that Synthetic Aperture Radar (SAR) data are a very valuable source of information for the modeling of the interactions between the land surface and the atmosphere. During the...

Uncertainty propagation in vegetation distribution models based on ensemble classifiers (2009)

Peters, Jan, Verhoest, Niko, Samson, Roeland, Van Meirvenne, Marc, Cockx, Liesbet, De Baets, Bernard

Ensemble learning techniques are increasingly applied for species and vegetation distribution modelling, often resulting in more accurate predictions. At the same time, uncertainty assessment of...

Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations (2009)

Álvarez-Mozos, Jesús, Verhoest, Niko, Larrañaga, Arantzazu, Casalí, Javier, González-Audícana, María

Radar-based surface soil moisture retrieval has been subject of intense research during the last decades. However, several difficulties hamper the operational estimation of soil moisture based on...

Adaptive soil moisture profile filtering for horizontal information propagation in the independent column-based CLM2.0 (2009)

De Lannoy, Gabriëlle, Houser, Paul, Verhoest, Niko, Pauwels, Valentijn

Error in radar-derived soil moisture due to roughness parameterization : an analysis based on synthetical surface profiles (2009)

Lievens, Hans, Vernieuwe, Hilde, Alvarez-Mozos, Jesus, De Baets, Bernard, Verhoest, Niko

In the past decades, many studies on soil moisture retrieval from SAR demonstrated a poor correlation between the top layer soil moisture content and observed backscatter coefficients, which mainly...

Vegetation composition and soil microbial community structural changes along a wetland hydrological gradient (2008)

BALASOORIYA, WK, Denef, Karolien, Peters, Jan, Verhoest, Niko, Boeckx, Pascal

Rainfall partitioning into throughfall, stemflow, and interception within a single beech (Fagus sylvatica L.) canopy: influence of foliation, rain event characteristics, and meteorology (2008)

Staelens, Jeroen, De Schrijver, An, Verheyen, Kris, Verhoest, Niko

Determining discharges from the Table Mountain Group (TMG) aquifer to wetlands in the southern Cape, South Africa (2008)

ROETS, W, XU, Y, RAITT, L, EL-KAHLOUN, M, Meire, Patrick, CALITZ, F, ...

Modelling groundwater-dependent vegetation patterns using ensemble learning (2008)

Peters, Jan, De Baets, Bernard, SAMSON, R, Verhoest, Niko

Remote sensing and wetland ecology: a South African case study (2008)

DE ROECK, ER, Verhoest, Niko, MIYA, MH, Lievens, Hans, BATELAAN, O, THOMAS, A, ...

On the soil roughness parameterization problem in soil moisture retrieval of bare surfaces from synthetic aperture radar (2008)

Verhoest, Niko, Lievens, Hans, WAGNER, W, ALVAREZ-MOZOS, J, MORAN, MS, MATTIA, F

Wetland vegetation distribution modelling for the identification of constraining environmental variables (2008)

Peters, Jan, Verhoest, Niko, SAMSON, R, Boeckx, Pascal, De Baets, Bernard

Addressing soil moisture model error using adaptive ensemble Kalman filtering (2008)

De Lannoy, Gabriëlle, Houser, Paul, Pauwels, Valentijn, Verhoest, Niko

Assessment of adaptive and heuristic time stepping for variably saturated flow (2007)

D'Haese, Christophe, PUTTI, M, PANICONI, C, Verhoest, Niko

Optimization of a coupled hydrology-crop growth model through the assimilation of observed soil moisture and leaf area index values using an ensemble Kalman filter (2007)

Pauwels, Valentijn, Verhoest, Niko, De Lannoy, Gabriëlle, GUISSARD, V, LUCAU, C, DEFOURNY, P

A possibilistic approach to soil moisture retrieval from ERS synthetic aperture radar backscattering under soil roughness uncertainty (2007)

Verhoest, Niko, De Baets, Bernard, MATTIA, F, SATALINO, G, LUCAU, C, DEFOURNY, P

Upscaling of point soil moisture measurements to field averages at the OPE3 test site (2007)

De Lannoy, Gabriëlle, HOUSER, PR, Verhoest, Niko, Pauwels, Valentijn, GISH, TJ

Correcting for forecast bias in soil moisture assimilation with the ensemble Kalman filter (2007)

De Lannoy, Gabriëlle, REICHLE, RH, HOUSER, PR, Pauwels, Valentijn, Verhoest, Niko

Random forests as a tool for ecohydrological distribution modelling. (2007)

Peters, Jan, De Baets, Bernard, Verhoest, Niko, Samson, Roeland, Degroeve, Sven, DE BECKER, P, ...

Cluster-based fuzzy models for groundwater flow in the unsaturated zone (2007)

Vernieuwe, Hilde, Verhoest, Niko, De Baets, Bernard, Hoeben, Rudi, De Troch, François

A Takagi-Sugeno fuzzy rule-based model for soil moisture retrieval from SAR under soil roughness uncertainty (2007)

Verhoest, Niko, De Baets, Bernard, Vernieuwe, Hilde

State and bias estimation for soil moisture profiles by an ensemble Kalman filter: Effect of assimilation depth and frequency (2007)

De Lannoy, Gabriëlle, HOUSER, PR, Pauwels, Valentijn, Verhoest, Niko

"Correcting for forecast bias in soil moisture assimilation with the ensemble Kalman filter" (vol 43, artn W09410, 2007) (2007)

De Lannoy, Gabriëlle, REICHLE, RH, HOUSER, PR, Pauwels, Valentijn, Verhoest, Niko

Representativeness of point soil moisture observations, upscaling and assimilation (2007)

De Lannoy, Gabriëlle, Pauwels, Valentijn, Houser, Paul R, Gish, Timothy, Verhoest, Niko

To estimate the temporal evolution of the spatial mean soil moisture in the Optimizing Production Inputs for Economic and Environmental Enhancement (OPE3) field, the relationship between point...

2007 International Workshop on the Analysis of Multi-temporal Remote Sensing Images: Proceedings of a meeting held 18-20 July 2007, Leuven, Belgium (2007)

De Lannoy, Gabriëlle, Verhoest, Niko, Coppin, Pol, Hoeben, Rudi

Parameterization of tillage-induced single-scale soil roughness from 4-m profiles (2006)

CALLENS, M, Verhoest, Niko, DAVIDSON, MWJ

Assessment of the operational applicability of RADARSAT-1 data for surface soil moisture estimation (2006)

ALVAREZ-MOZOS, J, CASALI, J, GONZALEZ-AUDICANA, M, Verhoest, Niko

Spatial variability and temporal stability of throughfall deposition under beech (Fagus sylvatica L.) in relationship to canopy structure (2006)

Staelens, Jeroen, De Schrijver, An, Verheyen, Kris, Verhoest, Niko

Assessment of model uncertainty for soil moisture through ensemble verification (2006)

De Lannoy, Gabriëlle, HOUSER, PR, Pauwels, Valentijn, Verhoest, Niko

Reply to comment by C. Michel on "A base flow separation algorithm based on the linearized Boussinesq equation for complex hillslopes'' (2006)

Pauwels, Valentijn, Huyck, Annelies, Verhoest, Niko

Comparison of clustering algorithms in the identification of Takagi-Sugeno models: A hydrological case study (2006)

VEMIEUWE, H, De Baets, Bernard, Verhoest, Niko

Spatial variability and temporal stability of throughfall water under a dominant beech (Fagus sylvatica L.) tree in relationship to canopy cover (2006)

Staelens, Jeroen, De Schrijver, An, Verheyen, Kris, Verhoest, Niko

Analysis of a 105-year time series of precipitation observed at Uccle, Belgium (2006)

DE JONGH, ILM, Verhoest, Niko, De Troch, François

Spatial and temporal characteristics of soil moisture in an intensively monitored agricultural field (OPE3) (2006)

De Lannoy, Gabriëlle, Verhoest, Niko, HOUSER, PR, GISH, TJ, Van Meirvenne, Marc

Assessment of temporal and spatial variation of nitrate removal in riparian zones (2006)

Dhondt, Karel, Boeckx, Pascal, Verhoest, Niko, Hofman, Georges, Van Cleemput, Oswald

A comparison of bulk and wet-only deposition at two adjacent sites in Melle (Belgium) (2005)

Staelens, Jeroen, De Schrijver, An, VAN AVERMAET, P, GENOUW, G, Verhoest, Niko

Comparison of data-driven Takagi-Sugeno models of rainfall-discharge dynamics (2005)

Vernieuwe, Hilde, GEORGIEVA, O, De Baets, Bernard, Pauwels, Valentijn, Verhoest, Niko, De Troch, François

Geostatistical procedures for characterizing soil processes (2005)

Van Meirvenne, Marc, VERNAILLEN, L, DOUAIK, A, Verhoest, Niko, Callens, Moira

Characteristics of rainstorms over a temperate region derived from multiple time series of weather radar images (2005)

De Lannoy, Gabriëlle, Verhoest, Niko, De Troch, François

Correlation between ground measured soil moisture and RADARSAT-1 derived backscattering coefficient over an agricultural catchment of Navarre (North of Spain) (2005)

ALVAREZ-MOZOS, J, CASALI, J, GONZALEZ-AUDICANA, M, Verhoest, Niko

A base flow separation algorithm based on the linearized Boussinesq equation for complex hillslopes (2005)

HUYCK, AAO, Pauwels, Valentijn, Verhoest, Niko

Ecohydrological monitoring in natural and managed ecosystems in southern Chile (2005)

Peters, Jan, Wieme, Vanessa, Boeckx, Pascal, Samson, Roeland, OYARZUN, C, Verhoest, Niko

Assimilation of small scale soil moisture in a land surface model (2005)

De Lannoy, Gabriëlle, Verhoest, Niko, Pauwels, Valentijn, Houser, Paul

Remote sensing offers a very interesting means to estimate the soil moisture state of a hydrological system. However, practical use for small scale agricultural applications is still limited. Ground...

Clustering-Based Identification of TS-models: Comparison on a Groundwater Model Case Study (2004)

Vernieuwe, Hilde, De Baets, Bernard, Verhoest, Niko

Assessment of initial solution estimates and adaptive vs. heuristic time stepping for variably saturated flow (2004)

D'HAESE, C, PUTTI, M, PANICONI, C, Verhoest, Niko, De Troch, François

A comparison between soil roughness statistics used in surface scattering models derived from mechanical and laser profilers (2003)

MATTIA, F, DAVIDSON, MWJ, LE TOAN, T, D'Haese, Christophe, Verhoest, Niko, GATTI, AM, ...

Fuzzy models of rainfall-discharge dynamics (2003)

Vernieuwe, Hilde, GEORGIEVA, O, De Baets, Bernard, Pauwels, Valentijn, Verhoest, Niko

Joint statistical properties of RMS height and correlation length derived from multisite 1-m roughness measurements (2003)

DAVIDSON, MWJ, MATTIA, F, SATALINO, G, Verhoest, Niko, LE TOAN, T, BORGEAUD, M, ...

Water table profiles and discharges for an inclined ditch-drained aquifer under temporally variable recharge (2003)

Pauwels, Valentijn, Verhoest, Niko, De Troch, François