A5062859909- Hydrology and Drought Analysis
- Hydrology and Watershed Management Studies
- Climate variability and models
- Flood Risk Assessment and Management
- Water resources management and optimization
- Climate change impacts on agriculture
- Geophysics and Gravity Measurements
- Groundwater and Isotope Geochemistry
- Soil and Water Nutrient Dynamics
- Peatlands and Wetlands Ecology
- Soil erosion and sediment transport
- Fire effects on ecosystems
- Hydrology and Sediment Transport Processes
- Groundwater flow and contamination studies
- Hydrological Forecasting Using AI
- Cryospheric studies and observations
- Soil and Unsaturated Flow
- Tree-ring climate responses
- Soil and Land Suitability Analysis
- Energy, Environment, Agriculture Analysis
- Irrigation Practices and Water Management
- Integrated Water Resources Management
- Water-Energy-Food Nexus Studies
- Plant Water Relations and Carbon Dynamics
- Environmental Conservation and Management
Wageningen University & Research
2015-2024
European Centre for Medium-Range Weather Forecasts
2019
Hydrometeorological Innovative Solutions (Spain)
2019
Hospital Santa Caterina
2010
Bergen Kommune
2010
ISRIC - World Soil Information
1992
Graduate School Experimental Plant Sciences
1992
Abstract. Streamflow observations from near-natural catchments are of paramount importance for detection and attribution studies, evaluation large-scale model simulations, assessment water management, adaptation policy options. This study investigates streamflow trends in a newly-assembled, consolidated dataset records 441 small 15 countries across Europe. The period 1962–2004 provided the best spatial coverage, but analyses were also carried out longer time periods (with fewer stations),...
Abstract. In the current human-modified world, or Anthropocene, state of water stores and fluxes has become dependent on human as well natural processes. Water deficits (or droughts) are result a complex interaction between meteorological anomalies, land surface processes, inflows, outflows, storage changes. Our inability to adequately analyse manage drought in many places points gaps our understanding inadequate data tools. The Anthropocene requires new framework for definitions research....
Abstract. Hydrological drought events have very different causes and effects. Classifying these into distinct types can be useful for both science management. We propose a hydrological typology that is based on governing propagation processes derived from catchment-scale analysis. In this six are distinguished, i.e. (i) classical rainfall deficit drought, (ii) rain-to-snow-season (iii) wet-to-dry-season (iv) cold snow season (v) warm (vi) composite drought. The underlying the result of...
Abstract. The summer drought of 2015 affected a large portion continental Europe and was one the most severe droughts in region since 2003. characterized by exceptionally high temperatures many parts central eastern Europe, with daily maximum 2 °C higher than seasonal mean (1971–2000) over western more 3 east. It hottest climatologically driest 1950–2015 study period for an area stretching from Czech Republic to Ukraine. For as whole, it is among six summers 1950. High evapotranspiration...
Abstract. Drought is a natural hazard that can cause wide range of impacts affecting the environment, society, and economy. Providing an impact assessment reducing vulnerability to these for regions beyond local scale, spanning political sectoral boundaries, requires systematic detailed data regarding impacts. This study presents diversity drought across Europe based on European Impact report Inventory (EDII), unique research database has collected close 5000 reports from 33 countries. The...
Abstract. Large-scale hydrological drought studies have demonstrated spatial and temporal patterns in observed trends, considerable difference exists among global models their ability to reproduce these patterns. In this study a controlled modeling experiment has been set up systematically explore the role of climate physical catchment structure (soils groundwater systems) better understand underlying drought-generating mechanisms. Daily data (1958–2001) 1495 grid cells across world were...
Abstract. Over recent decades, the global population has been rapidly increasing and human activities have altered terrestrial water fluxes to an unprecedented extent. The phenomenal growth of footprint significantly modified hydrological processes in various ways (e.g. irrigation, artificial dams, diversion) at scales (from a watershed globe). During early 1990s, awareness potential for increased scarcity led first detailed resource assessments. Shortly thereafter, order analyse...
Key Points Observation‐modeling framework is needed to discern water scarcity and drought. Anomaly analysis on observed naturalized time series allows quantification. In a case study, had four times higher impact than
Compound and cascading natural hazards usually cause more severe impacts than any of the single hazard events alone. Despite significant compound hazards, many studies have only focused on hazards. The aim this paper is to investigate spatio-temporal patterns using historical data for dry namely heatwaves, droughts, fires across Europe. We streamlined a simple methodology explore occurrence such daily basis. Droughts in soil moisture were analyzed time series threshold-based index, obtained...
Abstract. In 2015 large parts of Europe were affected by drought. this paper, we analyze the hydrological footprint (dynamic development over space and time) drought in terms both severity (magnitude) spatial extent compare it to extreme 2003. Analyses are based on a range low flow indices derived for about 800 streamflow records across Europe, collected community effort common protocol. We footprints events with meteorological footprints, order learn from similarities differences...
It is generally accepted that drought one of the most costly weather-related natural hazards. In 2015, a long-lasting hit Europe, particularly affecting central and eastern Europe. some regions it was driest (North Slovakia) in others (Czech Republic Poland) second summer last 50 years (following 2003). Key questions are: (i) how extreme are these events, not only terms hydro-meteorological characteristics but also impacts? (ii) impacts managed? Droughts often viewed from climatic...
Drought propagation through the terrestrial hydrological cycle is associated with a change in drought characteristics (duration and deficit), moving from precipitation via soil moisture to discharge. Here we investigate climate controls on modeling experiment 1271 virtual catchments that differ only type. For these studied bivariate distribution of duration standardized deficit for variables precipitation, moisture, We found meteorological (below‐normal precipitation), distributions have...
Drought is a worldwide phenomenon that originates from prolonged deficiency in precipitation, often combined with high evaporation, over an extended region. The resultant meteorological water balance may cause hydrological drought to develop into below normal levels of streamflow, lakes, and groundwater. Contemporary knowledge experiences international team experts are consolidated textbook (Tallaksen et al., 2023), which builds on earlier edition (URL 1), however significant new material...
Human activities both aggravate and alleviate streamflow drought. Here we show that aggravation is dominant in contrasting cases around the world analysed with a consistent methodology. Our 28 included different combinations of human-water interactions. We found water abstraction aggravated all drought characteristics, increases 20%–305% total time across case studies, deficit up to almost 3000%. Water transfers reduced by 97%. In into catchment or augmenting from groundwater, inputs could...
Abstract. Hydrological drought is increasingly studied using large-scale models. It is, however, not sure whether models reproduce the development of hydrological correctly. The pressing question how well do simulate propagation from meteorological to drought? To answer this question, we evaluated simulation in an ensemble mean ten models, both land-surface and global that participated model intercomparison project WATCH (WaterMIP). For a selection case study areas, characteristics (number...
Abstract. An overall appraisal of runoff changes at the European scale has been hindered by "white space" on maps observed trends due to a paucity readily-available streamflow data. This study tested whether this white space can be filled using estimates derived from model simulations runoff. The stem an ensemble eight global hydrological models that were forced with same climate input for period 1963–2000. validated 293 grid cells across domain observation-based trend estimates. mean...
Abstract. Climate change very likely impacts future hydrological drought characteristics across the world. Here, we quantify impact of climate on low flows and associated a global scale using an alternative identification approach that considers adaptation to changes in regime. The model PCR-GLOBWB was used simulate daily discharge at 0.5° globally for 1971–2099. forced with CMIP5 projections taken from five circulation models (GCMs) four emission scenarios (representative concentration...
For the development of sustainable, efficient risk management strategies for hydrological extremes droughts and floods, it is essential to understand temporal changes impacts, their respective causes interactions. In particular, little known about in vulnerability influence on drought flood impacts. We present a fictitious dialogue between two experts, one other showing that main obstacles scientific advancement this area are both lack data commonly accepted approaches. The experts "discuss"...