Erik Tijdeman

Erik Tijdeman
Universität Heidelberg · Department of Geography

Dr. rer. nat.

About

22
Publications
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331
Citations

Publications

Publications (22)
Article
Full-text available
Climate classification systems, such as Köppen–Geiger and the aridity index, are used in large-scale drought studies to stratify regions with similar hydro-climatic drought properties. What is currently lacking is a large-scale evaluation of the relation between climate and observed streamflow drought characteristics. In this study we explored how...
Article
Precipitation-based drought indices are most commonly used in drought monitoring and early warning systems whereas impacts of drought are often related to other domains of the hydrological cycle such as streamflow. Precipitation droughts do not always coincide with streamflow droughts, as the propagation from precipitation to streamflow is affected...
Article
Full-text available
The streamflow drought hazard can be characterized in a variety of ways, including using different indices. Traditionally, percentile-based indices, such as Q95 (the flow exceeded 95% of time), have been used by the hydrological community. Recently, the use of anomaly indices such as the Standardized Streamflow Index (SSI), a probability index-base...
Article
Full-text available
Human influences can affect streamflow drought characteristics and propagation. The question is where, when and why? To answer these questions, the impact of different human influences on streamflow droughts were assessed in England and Wales, across a broad range of climate and catchments conditions. We used a dataset consisting of catchments with...
Preprint
Full-text available
The drought of 2018 in Central and Northern Europe showed once more the large impact this natural hazard can have on the environment and society. Such droughts are often seen as slowly developing phenomena. However, root zone soil moisture deficits can rapidly develop during periods of lacking precipitation and meteorological conditions that favour...
Article
Full-text available
Droughts often have a severe impact on the environment , society, and the economy. The variables and scales that are relevant to understand the impact of drought motivated this study, which compared hazard and propagation characteristics, as well as impacts, of major droughts between 1990 and 2019 in southwestern Germany. We bring together high-res...
Article
Full-text available
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 cases included different combinations of human-water interactions. We found that water abstraction aggravated all drought characteristics, with increases of...
Preprint
Full-text available
Droughts often have a severe impact on environment, society, and economy. Only a multifaceted assessment of such droughts and their impacts can provide insights in the variables and scales that are relevant for drought management. Motivated by this aim, we compared hazard and propagation characteristics as well as impacts of major droughts between...
Research
Full-text available
DRIeR – Zahlen und Fakten stellt Schlüsselergebnisse des Projektes auf Factsheets von je zwei Seiten pro Thema zusammen. Beginnend mit einer Kernaussage werden die Forschungsthemen und Ergebnisse präsentiert. Weitergehende Informationen und eine Übersicht über publizierte Fachartikel sind auf www.drier.uni-freiburg.de zu finden.
Article
Full-text available
The drought of 2018 in central and northern Europe showed once more the large impact that this natural hazard can have on the environment and society. Such droughts are often seen as slowly developing phenomena. However, root zone soil moisture deficits can rapidly develop during periods lacking precipitation and meteorological conditions that favo...
Preprint
Full-text available
Abstract. Droughts are multidimensional hazards that can lead to substantial environmental and societal impacts. To understand causes and impacts, multiple variables need to be considered. Many studies identified past drought events and investigated drought propagation from meteorological droughts via soil moisture to hydrological droughts and some...
Article
Full-text available
Droughts are multidimensional hazards that can lead to substantial environmental and societal impacts. To understand causes and impacts, multiple perspectives need to be considered. Many studies have identified past drought events and investigated drought propagation from meteorological droughts via soil moisture to hydrological droughts, and some...
Article
Full-text available
Numerous indices exist for the description of hydrological drought. The EURO FRIEND-Water Low flow and Drought Group has repeatedly discussed changing paradigms in the perception and use of existing and emerging new indices for hydrological drought identification and characterization. Group members have also tested the communication of different in...
Conference Paper
Full-text available
Dry spells and heat waves control the frequency and duration of streamflow drought events. Groundwater storage and release in catchments can modulate their timing and severities in terms of deficit volume and persistence. To better understand the role of recharge and groundwater storage for catchment sensitivity to droughts we investigate the effec...
Article
Full-text available
Livestock production is a socioeconomic linchpin in Mongolia and is affected by large-scale livestock die-offs. Colloquially known as dzuds, these die-offs are driven by anomalous climatic events, including extreme cold temperatures, extended snow cover duration (SCD) and drought. As average temperatures across Mongolia have increased at roughly tw...
Poster
Full-text available
Das Jahr 2018 war in weiten Teilen Europas durch extreme Trockenheit geprägt. Eine Ereignisanalyse für Baden-Württemberg im Rahmen des Projekts DRIeR analysiert physische Ausprägungen der Dürre im Zuammenhang mit dem breiten Spektrum ökologischer und sozio-ökonomischer Folgen.
Poster
Full-text available
The drought of 2018 caused a wide range of impacts on environment and economy. This contribution explores how different drought impacts were linked to the occurrence of extreme values of hydrometeorological indices. Focusing on Germany, this study is based on drought impact data collected from text reports that are archived in the European Drought...
Technical Report
Full-text available
An overview of the drought 2018 and its major impacts in central Europe
Article
Full-text available
Oceanic–atmospheric climate modes, such as El Niño–Southern Oscillation (ENSO), are known to affect the local streamflow regime in many rivers around the world. A new method is proposed to incorporate climate mode information into the well-known ensemble streamflow prediction (ESP) method for seasonal forecasting. The ESP is conditioned on an ENSO...
Article
Full-text available
Climate classification systems, such as Köppen–Geiger and the aridity index, are often used in large-scale drought modeling studies and in drought monitoring and early warning systems to stratify regions with similar hydro-climatic drought properties. What is currently lacking is a large-scale evaluation of the relation between climate and hydrolog...
Article
Full-text available
[1] 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 drought propagation with a modeling experiment in 1271 virtual catchments that differ only in climate typ...
Article
The upscaling of the understanding of hydrological processes from the catchment scale to the global scale is not straightforward, especially not for hydrological extremes as floods and droughts. For large-scale water resources management, information on the development and persistence of soil moisture and hydrological droughts is crucial. The chara...

Network

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Projects

Projects (2)
Project
Drought impacts, processes and resilience: making the invisible visible (DRIeR) Drought is, by definition, an extreme and therefore rare event that affects both environmental and anthropogenic systems in complex, interrelated ways. Recent such memorable events occurred in the summer of 2003 and 2015, but historic so-called mega-events were by far more severe. In the future, droughts are expected to become more frequent in many parts of the world, and Baden-Württemberg (BW) is no exception to this. Unfortunately, the importance of droughts has been neglected by policy makers, and thus virtually no strategies exist that prepare BW for that kind of extreme events. The research alliance DRIeR addresses this challenge by pursuing an interdisciplinary approach including scientists and decision-makers from a whole range of water-related sectors alike. In a unique setup, DRIeR combines (i) climate reconstruction from historic records and tree ring proxies for long-term history, (ii) water quality and quantity indicator-to-impact analyses and statistical modelling for the instrumental record, (iii) ecological experiments combined with hydrological and land surface modelling of different land uses for simulation and scenario generation, and (iv) a comparative legal and environmental policy analysis for the recent past in BW and regions that are already experiencing and adapting to drought. As a collaboration of scientists from hydrology, historical climatology, silviculture, plant ecology, geography, law and environmental policy, DRIeR investigates specific cross-disciplinary feedbacks causing, intensifying, or mitigating the impacts of drought for the case of BW. DRIeR increases the visibility of the different aspects of drought in BW through the creation of a common drought information and collaboration platform (DICP). This acts as a centre of the network and facilitates the analysis and derivation of suitable indicators, impact information and approaches for drought management. Thereby, a stakeholder process with regulatory agencies, professionals and their representatives (e.g. from agriculture, public water supply, energy production, environmental NGOs) guides the establishment of the DICP’s structure and content at two levels: research collaboration and public information. The DICP and its linked databases will provide networking opportunities outside the project consortium and enable scientists and practitioners to connect with their own drought research and furthermore preserve assembled data.