A5070274418- Solar Radiation and Photovoltaics
- Atmospheric aerosols and clouds
- Impact of Light on Environment and Health
- Plant Water Relations and Carbon Dynamics
- Atmospheric Ozone and Climate
- Climate Change and Health Impacts
- Spectroscopy and Laser Applications
- Calibration and Measurement Techniques
- Meteorological Phenomena and Simulations
- Landslides and related hazards
- Atmospheric chemistry and aerosols
- Climate variability and models
- Advanced Neuroimaging Techniques and Applications
- Fire effects on ecosystems
- Solar and Space Plasma Dynamics
- Atmospheric and Environmental Gas Dynamics
- COVID-19 impact on air quality
- Obsessive-Compulsive Spectrum Disorders
- Functional Brain Connectivity Studies
- Remote Sensing in Agriculture
- Soil erosion and sediment transport
- Photovoltaic System Optimization Techniques
- Aquatic and Environmental Studies
- Energy and Environment Impacts
- Optical Imaging and Spectroscopy Techniques
Wageningen University & Research
2014-2025
Utrecht University
2019
University Medical Center Utrecht
2014
Heidelberg University
2014
University Hospital Heidelberg
2014
Abstract Vegetation and atmosphere processes are coupled through a myriad of interactions linking plant transpiration, carbon dioxide assimilation, turbulent transport moisture, heat atmospheric constituents, aerosol formation, moist convection, precipitation. Advances in our understanding hampered by discipline barriers challenges the role small spatiotemporal scales. In this perspective, we propose to study atmosphere–ecosystem interaction as continuum integrating leaf regional scales...
Abstract Surface solar irradiance varies on scales as small seconds or metres. This variability is driven mostly by wavelength‐dependent scattering clouds, and to a lesser extent aerosols water vapour. The highly variable nature of not resolved most atmospheric models, yet it affects, notably, the land–atmosphere coupling quality energy forecasting. Characterising variability, understanding mechanisms, developing models capable resolving accurately requires spatially spectrally observational...
Subarachnoid hemorrhage (SAH) represents a considerable health problem with an incidence of 6–7 per 100.000 individuals year in Western society. We investigated the long-term consequences SAH on behavior, neuroinflammation and gray- white-matter damage using endovascular puncture model Wistar rats. Rats were divided into mild or severe group based their acute neurological score at 24 h post-SAH. The degree determined post-mortem brains 48 strongly correlated score. Severe induced increased...
Clouds cast shadows on the surface and locally enhance solar irradiance by absorbing scattering sunlight, resulting in fast large fluctuations surface. Typical spatiotemporal scales driving mechanisms of this intra-day variability are not well known, hence even one day ahead forecasts inaccurate. Here we use long term, high frequency observations combined with satellite imagery, numerical simulations, conceptual modelling to show how is linked cloud size distribution. Cloud shadow sizes...
Abstract Numerical weather prediction models operate on grid spacings of a few kilometers, where deep convection begins to become resolvable. Around this scale, the emergence coherent structures in planetary boundary layer, often hypothesized be caused by cold pools, forces transition from shallow convection. Yet, kilometer-scale range is typically not resolved standard surface operational measurement networks. The campaign Field Experiment Submesoscale Spatio-Temporal Variability Lindenberg...
Abstract How are rain forest photosynthesis and turbulent fluxes influenced by clouds? To what extent clouds affected local processes driven energy, water, carbon fluxes? These interrelated questions were the main drivers of intensive field experiment CloudRoots-Amazon22 which took place at Amazon Tall Tower Observatory (ATTO)/Campina supersites in during dry season, August 2022. collected observational data to derive cause–effect relationships between occurring leaf level up canopy scales...
Surface solar irradiance variability is present under all broken clouds, but the patterns, magnitude of variability, and mechanisms behind it vary greatly with cloud type. Most radiative transfer models do not resolve observed primarily due to limiting transport two streams (up down) save computation time. From observations, we selected a diverse set surface patterns various types modelled these in combination Monte Carlo ray tracer for accurate 3D transfer. Stratus, altocumulus, cumulus...
Abstract. Surface solar irradiance variability is present under all broken clouds, but the patterns, magnitude of variability, and driving mechanisms vary greatly with cloud type. In this study, we performed numerical experiments to understand which main drive surface (SSI) variations across a diverse set observation-based conditions. The results show that four capture essence. We find for optically thin (τ<6) scattering in forward direction (forward escape) dominates. fields enough area,...
Abstract Spring 2020 broke sunshine duration records across Western Europe. The Netherlands recorded the highest surface irradiance since 1928, exceeding previous extreme of 2011 by 13%, and diffuse fraction measured a record low percentage (38%). coinciding reduction in anthropogenic pollution due to COVID-19 measures triggered hypothesis that cleaner-than-usual air contributed record. Based on analyses ground-based satellite observations experiments with radiative transfer model, we...
After vegetation fires, discharge of streams and rivers is often higher than before. This usually attributed to decreased canopy interception evapotranspiration caused by removal, increased overland flow resulting from soil water repellency. In this paper we examine whether fire-induced changes in preferential can reinforce postfire streamflow response. We studied five recently burned soils adjacent unburned Portugal found that reducing topsoil moisture increasing variability, fire the...
Abstract. Surface solar irradiance varies on scales down to seconds, and detailed long-term observational datasets of this variable are rare but in high demand. Here, we present an dataset global, direct, diffuse sampled at 1 Hz as well fully resolved variability until least 0.1 over a period 10 years from the Baseline Radiation Network (BSRN) station Cabauw, Netherlands. The is complemented with classifications, clear-sky aerosol reanalysis, information about position, observations clouds...
Abstract. We developed a cost-effective Fast-Response Optical Spectroscopy Time-synchronized instrument (FROST). FROST can measure 18 light spectra in wavebands ranging from 400 to 950 nm with 20 full-width half-maximum bandwidth. The 10 Hz measurement frequency is time-synchronized by global navigation satellite system (GNSS) timing pulse, and therefore multiple instruments be deployed spatial variation solar radiation perfect synchronization. show that capable of measuring horizontal...
Abstract. Surface solar irradiance varies on scales down to seconds, of which detailed, long-term observational datasets are rare but in high demand. Here, we present an dataset global, direct, and diffuse sampled at 1 Hz over a period 10 years, from the Baseline Radiation Network (BSRN) station Cabauw, Netherlands. The is complemented with variability classifications, clear-sky aerosol reanalysis, information about position, observations clouds sky type, wind measurements up 200 meters...
Clouds cast shadows on the surface and locally enhance solar irradiance by absorbing scattering sunlight, resulting in fast large fluctuations surface. Typical spatiotemporal scales driving mechanisms of this intra-day variability are not well known, hence even one day ahead forecasts inaccurate. Here we use long term, high frequency observations combined with satellite imagery, numerical simulations, conceptual modelling to show how is linked cloud size distribution. Cloud shadow sizes...
If rooftop-installed solar energy systems generate more than locally consumed, the excess is fed into electricity grid, increasing voltage. Rising penetration levels of photovoltaic (PV) increase voltage levels, thereby threatening power quality. The extent to which PV cause grid issues in actual, nation-wide distribution grids, and how these correlate with cloud conditions irradiance variability has yet be quantified. This work provides a spatial temporal characterization overvoltage events...
Land-surface representations in weather and climate models simplify the characterization of vegetation as a single layer with bulk environmental conditions. This approach overlooks vertical variability leaf traits conditions within canopy. research explores plant ecophysiology measurements Amazon tropical rainforest during daytime, specifically at ATTO site, late dry season. To characterize canopy its variability, we categorized into three layers: top (approximately upper third canopy, 18-27...