A5016099037- Hydrology and Watershed Management Studies
- Plant Water Relations and Carbon Dynamics
- Peatlands and Wetlands Ecology
- Soil and Water Nutrient Dynamics
- Flood Risk Assessment and Management
- Hydrological Forecasting Using AI
- Soil and Unsaturated Flow
- Advanced X-ray and CT Imaging
- Groundwater flow and contamination studies
- Advanced X-ray Imaging Techniques
- Soil erosion and sediment transport
- Medical Imaging Techniques and Applications
- Hydrology and Drought Analysis
- Groundwater and Isotope Geochemistry
- Soil Carbon and Nitrogen Dynamics
- Rice Cultivation and Yield Improvement
- Climate variability and models
- Plant responses to elevated CO2
- Atmospheric and Environmental Gas Dynamics
- Forest ecology and management
- CCD and CMOS Imaging Sensors
- Hydrology and Sediment Transport Processes
- X-ray Spectroscopy and Fluorescence Analysis
- Particle Detector Development and Performance
- Water Quality Monitoring Technologies
Justus-Liebig-Universität Gießen
2014-2024
Institute for Environmental Management
2016-2019
Karlsruhe Institute of Technology
2018
Giessen School of Theology
2014-2017
University of Naples Federico II
2014
Institute of Landscape Ecology of the Slovak Academy of Sciences
2013
Paul Scherrer Institute
2007-2010
University of Groningen
1983
PILATUS is a silicon hybrid pixel detector system, operating in single-photon-counting mode, that has been developed at the Paul Scherrer Institut for needs of macromolecular crystallography Swiss Light Source (SLS). A calibrated module characterized with monochromatic synchrotron radiation. The influence charge sharing on count rate and overall energy resolution were investigated. dead-time system was determined using attenuated direct beam. single also tested surface diffraction...
The MYTHEN single-photon-counting silicon microstrip detector has been developed at the Swiss Light Source for time-resolved powder diffraction experiments. An upgraded version of installed SLS station allowing acquisition patterns over 120 degrees in 2theta fractions seconds. Thanks to outstanding performance and calibration procedures developed, quality data obtained is now comparable with that traditional high-resolution point detectors terms FWHM resolution peak profile shape, additional...
The choice for specific parameter estimation methods is often more dependent on its availability than performance. We developed SPOTPY (Statistical Parameter Optimization Tool), an open source python package containing a comprehensive set of typically used to calibrate, analyze and optimize parameters wide range ecological models. currently contains eight widely algorithms, 11 objective functions, can sample from distributions. has model-independent structure be run in parallel the...
Pilatus is a silicon hybrid pixel detector system for detecting X-rays in single photon counting mode. The PILATUS II chip, fabricated radiation tolerant design with standard 0.25 mum CMOS process, was used to construct multichip modules size of 84 times 34 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> comprising 94'965 pixels. All calibrations and characterizations were carried out monochromatic from synchrotron source. In order...
Abstract. The behavior of every catchment is unique. Still, we seek for ways to classify them as this helps improve hydrological theories. In study, use signatures that were recently identified those with the highest spatial predictability cluster 643 catchments from CAMELS dataset. We describe resulting clusters concerning their behavior, location and attributes. then analyze connections between attributes relate co-variability in eastern western US. To explore whether observed differences...
Abstract. Ten conceptually different models in predicting discharge from the artificial Chicken Creek catchment North-East Germany were used for this study. Soil texture and topography data given to modellers, but was withheld. We compare predictions with measurements 6 ha discuss conceptualization parameterization of models. The vary a wide range, e.g. predicted actual evapotranspiration ranging 88 579 mm/y 19 346 mm/y. components hydrological cycle deviated systematically observations,...
In this letter, we report results obtained with a recently developed approach for grating-based x-ray dark-field imaging [F. Pfeiffer et al., Nat. Mater. 7, 134 (2008)]. Since the image contrast is formed through mechanism of small-angle scattering, it provides complementary and otherwise inaccessible structural information about specimen at micron submicron length scales. Our fully compatible conventional transmission radiography hard phase-contrast scheme Phys. 2, 258 (2006)]. can be used...
Abstract. Computer simulations are widely used to support decision making and planning in the agriculture sector. On one hand, many plant growth models use simplified hydrological processes structures – for example, by of a small number soil layers or application simple water flow approaches. other poorly represented. Hence, fully coupled with high degree process representation would allow more detailed analysis dynamic behaviour soil–plant interface. We two such high-process-oriented...
Abstract We organized a crowdsourcing experiment in the form of snapshot sampling campaign to assess spatial distribution nitrogen solutes, namely, nitrate, ammonium and dissolved organic (DON), German surface waters. In particular, we investigated (i) whether is reasonable method hydrology (ii) what effects population density, soil humus content arable land were on actual solute concentrations water quality. The statistical analyses revealed significant correlation between nitrate (0.46),...
Climate change, increasing environmental pollution, continuous loss of biodiversity, and a growing human population with food demand, threaten the functioning agro-ecosystems their contribution to people society. Agroforestry systems promise number benefits enhance nature’s contributions people. There are wide range agroforestry implemented representing different levels establishment across globe. This long time periods for these make empirical assessments impacts on ecosystem functions...
Abstract. Hillslopes are the dominant landscape components where incoming precipitation becomes groundwater, streamflow or atmospheric water vapor. However, directly observing flux partitioning in soil is almost impossible. Hydrological hillslope models therefore being used to investigate processes involved. Here we report on a modeling experiment using Catchment Modeling Framework (CMF) measured stable isotopes vertical profiles along tropical mountainous grassland transect traced through...