Till Francke
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View article: Monitoring abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany – data from the PYROPHOB project
Monitoring abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany – data from the PYROPHOB project Open
We present the data recorded by eight institutions within the PYROPHOB project, running from 2020 to 2024 at two forest research sites in the south-west of Brandenburg, Germany. The aim of the project was to monitor abiotic and biotic para…
View article: picoSMMS: Development and Validation of a Low-Cost and Open-Source Soil Moisture Monitoring Station
picoSMMS: Development and Validation of a Low-Cost and Open-Source Soil Moisture Monitoring Station Open
Soil moisture exhibits high spatio-temporal variability that necessitates dense monitoring networks, yet the cost of commercial sensors often limits widespread deployment. Despite the mass production of low-cost capacitive soil moisture se…
View article: The Potsdam Soil Moisture Observatory: High-coverage reference observations at kilometer scale
The Potsdam Soil Moisture Observatory: High-coverage reference observations at kilometer scale Open
Cosmic-ray neutron sensing (CRNS) has gained popularity for estimating soil water content (SWC) due to its innovative capability to measure at an intermediate scale – a notable advantage over point-scale sensors, which are often sparsely i…
View article: Groundwater recharge in Brandenburg is declining – but why?
Groundwater recharge in Brandenburg is declining – but why? Open
Brandenburg is among the driest federal states in Germany, featuring low rates of groundwater recharge (GWR) across large parts of the state. This GWR is fundamental to both water supply and the support of natural ecosystems. There is stro…
View article: Monitoring abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany – data from the PYROPHOB project
Monitoring abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany – data from the PYROPHOB project Open
We present the data recorded by eight institutions within the PYROPHOB project, running from 2020 to 2024 at two forest research sites in the south-west of Brandenburg, Germany. The aim of the project was to monitor abiotic and biotic para…
View article: Patterns and Processes of Diel Streamflow Cycles Along the Longitudinal Profile of an Alpine Headwater Stream
Patterns and Processes of Diel Streamflow Cycles Along the Longitudinal Profile of an Alpine Headwater Stream Open
In high‐alpine catchments, diel streamflow cycles are typically controlled by snow and ice melt during days without precipitation. Potentially co‐occurring evapotranspiration (ET) controlled streamflow cycles are of opposite phase and can …
View article: River intermittency: mapping and upscaling of water occurrence using unmanned aerial vehicle, Random Forest and remote sensing landscape attributes
River intermittency: mapping and upscaling of water occurrence using unmanned aerial vehicle, Random Forest and remote sensing landscape attributes Open
Although intermittent rivers exist naturally, global changes have a direct influence on streamflow permanence. Measurements and modelling in temporary rivers are still scarce and yet, essential for prediction and understanding of scarcity …
View article: Comparison and hydrological evaluation of different precipitation data for a large tropical region: the Blue Nile Basin in Ethiopia
Comparison and hydrological evaluation of different precipitation data for a large tropical region: the Blue Nile Basin in Ethiopia Open
The Upper Blue Nile Basin (UBNB) is a critical water resource, facing challenges from population growth, climate variability, and transboundary water management. For any type of water resources assessment, the availability and reliability …
View article: Virtual Joint Field Campaign: a framework of synthetic landscapes to assess multiscale measurement methods of water storage
Virtual Joint Field Campaign: a framework of synthetic landscapes to assess multiscale measurement methods of water storage Open
Various methods are available to measure water storage across different landscape compartments, e.g. cosmic-ray neutron sensing, remote sensing, or hydrogravimetry. All these methods provide integral estimates that are representative of th…
View article: Groundwater recharge in Brandenburg is declining – but why?
Groundwater recharge in Brandenburg is declining – but why? Open
Brandenburg is among the driest federal states in Germany, featuring low rates of ground water recharge (GWR) across large parts of the state. This GWR is fundamental to both water supply and the support of natural ecosystems. There is str…
View article: Enhancing Hectare‐Scale Groundwater Recharge Estimation by Integrating Data From Cosmic‐Ray Neutron Sensing Into Soil Hydrological Modeling
Enhancing Hectare‐Scale Groundwater Recharge Estimation by Integrating Data From Cosmic‐Ray Neutron Sensing Into Soil Hydrological Modeling Open
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 a large support volume (horizontal extent of hectares) and of…
View article: Brief Communication: A new drought monitoring network in the state of Brandenburg (Germany) using cosmic-ray neutron sensing
Brief Communication: A new drought monitoring network in the state of Brandenburg (Germany) using cosmic-ray neutron sensing Open
In the recent years, the German federal state of Brandenburg has been particularly impacted by soil moisture droughts. To support the timely and informed management of such water-related risks, we introduce a novel soil moisture and drough…
View article: Virtual joint field campaign: a framework of synthetic landscapes to assess multiscale measurement methods of water storage
Virtual joint field campaign: a framework of synthetic landscapes to assess multiscale measurement methods of water storage Open
The major challenge of multiscale measurement methods beyond the point scale is their complex interpretation in the light of landscape heterogeneity. For example, methods like cosmic-ray neutron sensing, remote sensing, or hydrogravimetry …
View article: Hydrological and Sediment Transport Regime on Rivers in the Balkans: The Case of the Seman River in Albania
Hydrological and Sediment Transport Regime on Rivers in the Balkans: The Case of the Seman River in Albania Open
Hydrological and sediment transport regime are important in water resource management. Aim of this study is to identify the flow regime and the suspended sediment transport in a Mediterranean River Basin. Precipitation, temperature, soil, …
View article: Mapping Regional Sub-Surface Soil Moisture Dynamics and Extremes on the Large Scale Through Data Fusion
Mapping Regional Sub-Surface Soil Moisture Dynamics and Extremes on the Large Scale Through Data Fusion Open
Soil moisture products play a pivotal role in monitoring and predicting droughts that affect crop yield, water supply, and land–atmosphere interactions. The availability of various satellite-based soil moisture products allows for a …
View article: Control processes of diurnal streamflow cycles along the longitudinal profile of an alpine river
Control processes of diurnal streamflow cycles along the longitudinal profile of an alpine river Open
Snowmelt or ice melt typically control diurnal streamflow cycles during rain-free periods in high-altitude alpine catchments. Evapotranspiration-controlled streamflow cycles are less prominent, but can occur simultaneously (Mutzner et al.,…
View article: Technical Note: Revisiting the general calibration of cosmic-ray neutron sensors to estimate soil water content
Technical Note: Revisiting the general calibration of cosmic-ray neutron sensors to estimate soil water content Open
Cosmic-ray neutron sensing (CRNS) is becoming increasingly popular for monitoring soil water content (SWC). To retrieve SWC from observed neutron intensities, local measurements of SWC are typically required to calibrate a location-specifi…
View article: Testing a novel sensor design to jointly measure cosmic-ray neutrons, muons and gamma rays for non-invasive soil moisture estimation
Testing a novel sensor design to jointly measure cosmic-ray neutrons, muons and gamma rays for non-invasive soil moisture estimation Open
Cosmic-ray neutron sensing (CRNS) has emerged as a reliable method for soil moisture and snow estimation. However, the applicability of this method beyond research has been limited due to, among others, the use of relatively large and expe…
View article: Projecting sediment export from two highly glacierized alpine catchments under climate change: exploring non-parametric regression as an analysis tool
Projecting sediment export from two highly glacierized alpine catchments under climate change: exploring non-parametric regression as an analysis tool Open
Future changes in suspended sediment export from deglaciating high-alpine catchments affect downstream hydropower reservoirs, flood hazard, ecosystems and water quality. Yet, quantitative projections of future sediment export have so far b…
View article: Comprehensive quality assessment of satellite- and model-based soil moisture products against the COSMOS network in Germany
Comprehensive quality assessment of satellite- and model-based soil moisture products against the COSMOS network in Germany Open
Critical to the reliable application of gridded soil moisture products is a thorough assessment of their quality at spatially compatible scales. While previous studies have attempted to evaluate different soil moisture products, comprehens…
View article: Comment on hess-2023-169
Comment on hess-2023-169 Open
Abstract. Cosmic-ray neutron sensing (CRNS) is becoming increasingly popular for monitoring soil water content (SWC). To retrieve SWC from observed neutron intensities, local measurements of SWC are typically required to c…
View article: Comment on hess-2023-169
Comment on hess-2023-169 Open
Abstract. Cosmic-ray neutron sensing (CRNS) is becoming increasingly popular for monitoring soil water content (SWC). To retrieve SWC from observed neutron intensities, local measurements of SWC are typically required to c…
View article: Comment on egusphere-2023-1063
Comment on egusphere-2023-1063 Open
Abstract. Future changes in suspended sediment export from deglaciating high-alpine catchments affect downstream hydropower and reservoirs, flood hazard, ecosystems and water quality. Yet so far, quantitative projections o…
View article: Comment on egusphere-2023-1063
Comment on egusphere-2023-1063 Open
Abstract. Future changes in suspended sediment export from deglaciating high-alpine catchments affect downstream hydropower and reservoirs, flood hazard, ecosystems and water quality. Yet so far, quantitative projections o…
View article: Three years of soil moisture observations by a dense cosmic-ray neutron sensing cluster at an agricultural research site in north-east Germany
Three years of soil moisture observations by a dense cosmic-ray neutron sensing cluster at an agricultural research site in north-east Germany Open
Cosmic-ray neutron sensing (CRNS) allows for the estimation of root-zone soil water content (SWC) at the scale of several hectares. In this paper, we present the data recorded by a dense CRNS network operated from 2019 to 2022 at an agricu…
View article: Supplementary material to "Technical Note: revisiting the general calibration of cosmic-rayneutron sensors to estimate soil water content"
Supplementary material to "Technical Note: revisiting the general calibration of cosmic-rayneutron sensors to estimate soil water content" Open
In this section, we provide the partial derivatives of θ G (Eq. 2 in the technical note) and θ L (Eq. 10 in the technical note).For the sake of comprehensibility, we will reproduce the underlying equations for θ G and θ L at the beginning …
View article: Technical Note: revisiting the general calibration of cosmic-rayneutron sensors to estimate soil water content
Technical Note: revisiting the general calibration of cosmic-rayneutron sensors to estimate soil water content Open
Cosmic-ray neutron sensing (CRNS) is becoming increasingly popular for monitoring soil water content (SWC). To retrieve SWC from observed neutron intensities, local measurements of SWC are typically required to calibrate a location-specifi…
View article: Projecting sediment export from two highly glacierized alpine catchments under climate change: Exploring non-parametric regression as an analysis tool
Projecting sediment export from two highly glacierized alpine catchments under climate change: Exploring non-parametric regression as an analysis tool Open
Future changes in suspended sediment export from deglaciating high-alpine catchments affect downstream hydropower and reservoirs, flood hazard, ecosystems and water quality. Yet so far, quantitative projections of future sediment export ha…
View article: Reconstructing five decades of sediment export from two glacierized high-alpine catchments in Tyrol, Austria, using nonparametric regression
Reconstructing five decades of sediment export from two glacierized high-alpine catchments in Tyrol, Austria, using nonparametric regression Open
Knowledge on the response of sediment export to recent climate change in glacierized areas in the European Alps is limited, primarily because long-term records of suspended sediment concentrations (SSCs) are scarce. Here we tested the esti…
View article: First multi-year cosmic-ray neutron sensing cluster: insights from three years of soil water storage observations across depths and scales at an agricultural research site  in North-East Germany
First multi-year cosmic-ray neutron sensing cluster: insights from three years of soil water storage observations across depths and scales at an agricultural research site  in North-East Germany Open
<p>Cosmic ray neutron sensing (CRNS) allows for the estimation of root-zone soil water storage at the hectare scale. Therefore, CRNS can be valuable assets of long-term hydrological observatories aimed at unravelling key hydrological…