A5061306473- Soil Moisture and Remote Sensing
- Plant Water Relations and Carbon Dynamics
- Geophysical Methods and Applications
- Remote Sensing in Agriculture
- Precipitation Measurement and Analysis
- Climate change and permafrost
- Soil and Unsaturated Flow
- Cryospheric studies and observations
- Remote Sensing and LiDAR Applications
- Horticultural and Viticultural Research
- Landslides and related hazards
- Microwave Imaging and Scattering Analysis
- Soil Geostatistics and Mapping
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Soil Carbon and Nitrogen Dynamics
- Geophysics and Gravity Measurements
- Hydrology and Watershed Management Studies
- Tree-ring climate responses
- Meteorological Phenomena and Simulations
- Geophysical and Geoelectrical Methods
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Forest ecology and management
- Plant responses to elevated CO2
- Fire effects on ecosystems
University of Liège
2005-2025
Forschungszentrum Jülich
2015-2024
UCLouvain
2011-2024
Sciences, Philosophie, Histoire
2022-2024
Joint Research Center
2022
Washington State University
2019
Flinders University
2019
University of Arizona
2019
University of Wisconsin–Madison
2019
University of Calgary
2019
Core Ideas A community effort is needed to move soil modeling forward. Establishing an international consortium key in this respect. There a need better integrate existing knowledge models. Integration of data and models challenge modeling. The remarkable complexity its importance wide range ecosystem services presents major challenges the processes. Although progress has occurred last decades, processes remain disjointed between disciplines or services, with considerable uncertainty...
Core Ideas There has been tremendous progress in GPR as a tool for soil water content determination. Numerous studies have shown the potential of to detect and map SWC. We highlight new possibilities achievements acquisition processing strategies. Quantitative SWC detection hydrological parameter estimation are possible using GPR. encourages other communities embrace Tremendous made with respect ground penetrating radar (GPR) equipment, data acquisition, since establishment determination...
Monitoring the structure of forest stands is high importance for managers to help them in maintaining ecosystem services. For that purpose, Unmanned Aerial Vehicles (UAVs) open new prospects, especially combination with Light Detection and Ranging (LiDAR) technology. Indeed, shorter distance from Earth’s surface significantly increases point density beneath canopy, thus offering possibilities extraction underlying semantics. example, tree stems can now be captured sufficient detail, which a...
The European Space Agency's Soil Moisture and Ocean Salinity (SMOS) satellite was launched in November 2009 delivers now brightness temperature soil moisture products over terrestrial areas on a regular three-day basis. In 2010, several airborne campaigns were conducted to validate the SMOS with microwave emission radiometers at L-band (1.4 GHz). this paper, we present results from measurements performed Rur Erft catchments May June 2010. measurement sites situated very west of Germany close...
Accurate estimates of surface soil moisture are essential in many research fields, including agriculture, hydrology, and meteorology. The objective this study was to evaluate two remote-sensing methods for mapping the a bare soil, namely, L-band radiometry using brightness temperature ground-penetrating radar (GPR) reflection inversion. Invasive time-domain reflectometry (TDR) measurements were used as reference. A field experiment performed which these three map after controlled...
In this paper, we experimentally analyzed the feasibility of estimating soil hydraulic properties from 1.4 GHz radiometer and 0.8-2.6 ground-penetrating radar (GPR) data. Radiometer GPR measurements were performed above a sand box, which was subjected to series vertical water content profiles in hydrostatic equilibrium with table located at different depths. A coherent radiative transfer model used simulate brightness temperatures measured radiometer. data modeled using full-wave layered...
Abstract. This paper's objective is to present generic calibration functions for organic surface layers derived the soil moisture sensors Decagon ECH2O 5TE and Delta-T ThetaProbe ML2x, using material from northern regions, mainly Finnish Meteorological Institute's Arctic Research Center in Sodankylä study area of Danish Hydrology (HOBE). For sensor such a function currently not reported literature. Data were compared with measurements underlying mineral soils including laboratory field...
Core Ideas In the proposed model, wilting point and porosity are a function of organic matter. organic‐rich soil, model improves accuracy microwave radiative transfer model. The is applicable for both portable satellite soil moisture sensors. Most dielectric mixing models have been developed mineral soils without extensive consideration matter (OM). addition, when used in situ measurement, most these focus only on real part effective constant corresponding imaginary part. Organic fractions...
Monitoring of canopy density with related metrics such as leaf area index (LAI) makes a significant contribution to understanding and predicting processes in the soil–plant–atmosphere system indicating crop health potential yield for farm management. Remote sensing methods using optical sensors that rely on spectral reflectance calculate LAI have become more mainstream due easy entry availability. Methods vegetation indices (VI) based multispectral data essentially measure green (GAI) or...
Monitoring vegetation moisture conditions is paramount to better understand and assess drought impacts on vegetation, enhance crop yield predictions, improve ecosystem models. Passive microwave remote sensing allows retrievals of the optical depth (VOD; [unitless]), which directly proportional water content (VWC; in units mass per unit area [kg/m2]). However, VWC largely dependent dry biomass structure imprints VOD signal. Previously, statistical models have been used isolate component from...
Abstract. Grapevine water status exhibits substantial variability even within a single vineyard. Understanding how edaphic, topographic, and climatic conditions impact grapevine heterogeneity at the field scale, in non-irrigated vineyards, is essential for winemakers as it significantly influences wine quality. This study aimed to quantify spatial distribution of leaf potential (Ψleaf) vineyards assess influence soil property heterogeneity, topography, on intra-field two during viticultural...
Cosmogenic nuclide concentrations are typically inverted for erosion and soil production rates under the assumption that these temporally invariant, thickness is in steady state. Yet, transience process expected to occur landscapes experiencing changes land use, tectonic uplift, climate. Pairing cosmogenic nuclides with different half-lives provides a means resolving if sufficiently slow radioactive decay significant. Here, we examine 10Be 26Al quartz collected from saprolite at 6 positions...
The emission of CO2 from peatlands varies significantly across space and time which renders accurate quantification modeling carbon fluxes challenging. In this study, we combined in-situ measurements with Unmanned Aerial Vehicle (UAV) remote sensing (RS) to investigate soil respiration patterns a temperate peatland landscape (0.32 ha) located in the Belgian Hautes Fagnes plateau. primary objective was evaluate potential multi-sensor UAV RS for characterizing efflux studying importance...
The dynamics of water, biomass, and structure forest ecosystems are challenging to assess on larger spatio-temporal scales with ground-based measurement techniques, particularly beyond individual tree stands. Here, satellite-based remote sensing provides solutions enhance these assessments.Vegetation optical depth (VOD) is a variable that measures the attenuation microwaves by vegetation. VOD signal contains information dry structure, water content These components can be disentangled using...
Climate change is having profound effects on forest ecosystems. Forests, as major carbon sinks, play a vital role in regulating the Earth’s climate. However, climate-induced disturbances threaten these ecosystems, creating feedback loops that exacerbate global warming. Monitoring vegetation dynamics and simulating future conditions are crucial for sustainable ecosystem management.While climate models or Earth System (ESMs) useful large-scale assessments, they often fail to capture...
The moisture status of peatlands is an important factor as it directly affects carbon dynamics. Therefore, critical to characterize and understand peatland monitor its spatial temporal variations. This study aims evaluate the potential drone-borne ground-penetrating radar (GPR) in combination with full-wave inversion investigate variability root-zone moisture. A secondary objective assess benefits for restoration applications. was carried out on a 4.5 ha Belgian Hautes Fagnes which...
The fourth and fifth Soil Moisture Active Passive Experiments (SMAPEx-4 -5) were conducted at the beginning of SMAP operational phase, May September 2015, to: 1) evaluate microwave observations derived soil moisture (SM) products 2) intercompare with Ocean Salinity (SMOS) Aquarius missions over Murrumbidgee River Catchment in southeast Australia. Airborne radar radiometer same frequencies as collected footprints/grids concurrent its overpass. In addition, intensive ground sampling SM,...