A5013188447- Soil Moisture and Remote Sensing
- Soil and Unsaturated Flow
- Geophysical and Geoelectrical Methods
- Nuclear Physics and Applications
- Hydrology and Watershed Management Studies
- Geophysics and Gravity Measurements
- Precipitation Measurement and Analysis
- Climate variability and models
- Irrigation Practices and Water Management
- Climate change and permafrost
- Groundwater and Isotope Geochemistry
- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Geophysical Methods and Applications
- Groundwater flow and contamination studies
- Agriculture Sustainability and Environmental Impact
- Geomagnetism and Paleomagnetism Studies
- Atomic and Subatomic Physics Research
- Spacecraft and Cryogenic Technologies
- Climate Change Policy and Economics
- Hydrocarbon exploration and reservoir analysis
- Magnetic and Electromagnetic Effects
- Calibration and Measurement Techniques
- Water resources management and optimization
- Hydrological Forecasting Using AI
University of Potsdam
2017-2025
Potsdam Institute for Climate Impact Research
2012
Abstract. In the last few years method of cosmic-ray neutron sensing (CRNS) has gained popularity among hydrologists, physicists, and land-surface modelers. The sensor provides continuous soil moisture data, averaged over several hectares tens decimeters in depth. However, signal still may contain unidentified features hydrological processes, many calibration datasets are often required order to find reliable relations between intensity water dynamics. Recent insights into environmental...
Abstract. Climate change increases the occurrence and severity of droughts due to increasing temperatures, altered circulation patterns, reduced snow occurrence. While Europe has suffered from drought events in last decade unlike ever seen since beginning weather recordings, harmonized long-term datasets across continent are needed monitor support predictions. Here we present soil moisture data 66 cosmic-ray neutron sensors (CRNSs) (COSMOS-Europe for short) covering recent events. The CRNS...
Abstract. Reactive nitrogen (Nr) is not only an important nutrient for plant growth, thereby safeguarding human alimentation, but it also heavily disturbs natural systems. To mitigate air, land, aquatic, and atmospheric pollution caused by the excessive availability of Nr, crucial to understand long-term development global agricultural Nr cycle. For our analysis, we combine a material flow model with land-use optimization model. In first step estimate state cycle in 1995. second create four...
Abstract. Monitoring soil moisture is still a challenge: it varies strongly in space and time at various scales while conventional sensors typically suffer from small spatial support. With sensor footprint up to several hectares, cosmic-ray neutron sensing (CRNS) modern technology address that challenge. So far, the CRNS method has been applied with single or sparse national-scale networks. This study presents, for first time, dense network of 24 stations covered, May July 2019, an area just...
Abstract In recent years, cosmic‐ray neutron sensing (CRNS) has shown a large potential among proximal techniques to monitor soil moisture noninvasively, with high frequency and support volume (radius up 240 m depth 80 cm). This signal is, however, more sensitive closer distances shallower depths. Inherently, CRNS‐derived is spatially weighted value, different from an average as retrieved by sensor network. this study, we systematically test new profile shape correction on moisture, based...
Abstract Vadose zone models, calibrated with state variables, may offer a robust approach for deriving groundwater recharge. Cosmic‐ray neutron sensing (CRNS) provides soil moisture over large support volume (horizontal extent of hectares) and offers the opportunity to estimate water fluxes at this scale. However, horizontal vertical sensitivity method results in an inherently weighted content, which poses challenge its application hydrologic modeling. We systematically assess calibrating...
Abstract. Various methods are available to measure water storage across different landscape compartments, e.g. cosmic-ray neutron sensing, remote or hydrogravimetry. All these provide integral estimates that representative of their corresponding measurement volume. However, we typically do not know the true value in volumes, which makes it difficult assess accuracy such methods. In this study suggest a synthetic virtual allows for an exact definition all variables interest and, consequently,...
Estimating areal groundwater recharge (GWR) rates is crucial to assess the sustainability of resource use. Estimation methods, including physical measurements, water budget approaches, numerical methods and tracer each have their strength limitations. Jointly, monitoring different hydrological dynamics (e.g. shallow deep soil moisture, GW levels) simulation complex process interactions between groundwater, soil, plants atmosphere can lead a more accurate quantitative scale-relevant...
Cosmic Ray Neutron Sensing (CRNS) is attracting attention in irrigation management. CRNS can non-invasively and accurately measure soil moisture (SM) the root zone at field scale, thus addressing scale logistics issues typical of point-scale sensor networks. are effectively used to inform large pivot systems but most agricultural landscapes Europe elsewhere consist highly diversified small fields. These challenging for as measured signal integrates an area ~200m radius where multiple fields,...
Near-surface soil moisture variation is an important variable in peatlands, controlling chemical processes and peat development or degradation. Cosmic-ray neutron sensing (CRNS) provides area average over a support volume of > 150 m radius down to 50 cm depth by relating the abundance secondary fast neutrons above ground moisture. However, standard calibration weighting functions for CRNS were developed tested mineral soils with dry bulk densities 1 g cm-³ only up 55 % volumetric...
Brandenburg is one of the driest regions in Germany and heavily relies on groundwater resources for both drinking water supply irrigated agriculture. The state already experiencing declining levels, climate change expected to further exacerbate situation. For sustainable management resources, recharge rate a key parameter. However, its quantification remains challenge since it cannot be directly measured at field scale.In this study, we utilize daily data from multiple cosmic-ray neutron...
Cosmic-ray neutron sensing (CRNS) is a non-invasive method to retrieve root zone soil moisture as daily time series for an area integrated that up 0.1 km². This can be expanded by combining several CRNS-stations into one cluster, not only increasing its extent integral but also allowing differences inbetween them represent spatially varying conditions. Such cluster has been established in Maquardt, Potsdam, Germany end of 2019, with mixed land use cropped fields, meadows and...
Abstract Although cosmic‐ray neutron sensing (CRNS) is probably the most promising noninvasive proximal soil moisture measurement technique at field scale, its application for hydrological simulations remains underexplored in literature so far. This study assessed use of CRNS to inversely calibrate hydraulic parameters intermediate scale simulate groundwater recharge rates a daily timescale. The was conducted two contrasting years Guaraíra experimental basin, Brazil, 5.84‐km², tropical wet...
Abstract. Cosmic-ray neutron sensing (CRNS) allows for the estimation of root-zone soil water content (SWC) at scale several hectares. In this paper, we present data recorded by a dense CRNS network operated from 2019 to 2022 an agricultural research site in Marquardt, Germany – first multi-year cluster. Consisting, its core, eight permanently installed sensors, cluster was supplemented wealth complementary measurements: seven additional temporary partly co-located with permanent ones; 27...
Vadose zone models, calibrated with state variables, may offer a robust approach for deriving groundwater recharge. Cosmic-ray neutron sensing (CRNS) provides soil moisture over large support volume (horizontal extent of hectares) and offers the opportunity to estimate water fluxes at this scale. However, horizontal vertical sensitivity method results in an inherently weighted content, which poses challenge its application hydrologic modelling. We systematically assess calibrating hydraulic...
Abstract. The major challenge of multiscale measurement methods beyond the point scale is their complex interpretation in light landscape heterogeneity. For example, like cosmic-ray neutron sensing, remote or hydrogravimetry are all able to provide an integral value on water storage, representative for individual volume. A rigorous assessment performance often hindered by lack knowledge about truth at corresponding scale, given high complexity and detail natural landscapes. In this study we...
Abstract. In the last years method of cosmic-ray neutron sensing (CRNS) has gained popularity among soil hydrologists, physicists, and land-surface modelers. The sensor provides continuous moisture data, averaged over several hectares tens decimeters depth. However, signal still may contain unidentified features hydrological processes, many calibration datasets are often required in order to find reliable relations between neutrons water dynamics. Recent insights into environmental...
Abstract. Reactive nitrogen (Nr) is not only an important nutrient for plant growth, thereby safeguarding human alimentation, but it also heavily disturbs natural systems. To mitigate air, land, aquatic, and atmospheric pollution caused by the excessive availability of Nr, crucial to understand long term development global agricultural Nr cycle. For our analysis, we combine a material flow model with land-use-optimization model. In first step estimate state cycle in 1995. second create four...
Cosmic ray neutron sensor (CRNS) technology is increasingly promoted in agricultural environments for monitoring of volumetric soil water content (SWC). Among its advantages over traditional measurements the provision field-scale representative SWC timeseries without obstruction management activities. To derive an integrated average at a site, CRNS typically calibrated using observations gravimetric SWC, organic matter and bulk density (BD). Those variables may best case be derived from...
Improving groundwater recharge flux (GWR) estimation is key for effective or sustainable resource management. Yet, GWR assessment challenging as direct measurements are usually limited to the point scale and specific depths of vadose zone . In agricultural settings, spatial variability introduced by land use management may further complicate assessment. Tracer studies in zone, combining stable isotopes (δ2H δ18O) soil water storage can aid such agriculturally managed...
Brandenburg is among the driest regions in Germany, and heavily relies on groundwater resources for both agricultural drinking water supply. Already suffering from declining tables, climate change expected to exacerbate situation. For a sustainable management of resources, rate recharge (GWR) key variable. Yet, its quantification remains challenge, as it cannot be measured directly at field scale One way estimate GWR using vadose zone models simulate local balance vertical percolation...
Abstract. Cosmic-ray neutron sensing (CRNS) allows for the estimation of root-zone soil water content (SWC) at scale several hectares. In this paper, we present data recorded by a dense CRNS network operated from 2019 to 2022 an agricultural research site in Marquardt, Germany – first multi-year cluster. Consisting, its core, eight permanently installed sensors, cluster was supplemented wealth complementary measurements: seven additional temporary partly collocated with permanent ones, 27...