Petra Doell

Petra Doell
Goethe-Universität Frankfurt am Main · Institut für Physische Geographie

Ph.D., Habilitation

About

251
Publications
163,131
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
26,943
Citations
Additional affiliations
October 2003 - present
Goethe-Universität Frankfurt am Main
Position
  • Professor of Hydrology
July 1996 - September 2003
Universität Kassel
Position
  • Senior Researcher
February 1993 - June 1996
Technische Universität Berlin
Position
  • PhD Student

Publications

Publications (251)
Preprint
Streamflow drought hazard indicators (SDHI) are mostly lacking in large-scale drought early warning systems (DEWS). This paper presents a new systematic approach for selecting and computing SDHI for monitoring drought risk for human water supply from surface water and for river ecosystems that is also relevant for meteorological or soil moisture dr...
Article
In many parts of the world, climate change has already caused a decline in groundwater recharge, whereas groundwater demand for drinking water production and irrigation continues to increase. In such regions, groundwater tables are steadily declining with major consequences for groundwater-surface water interactions. Predominantly gaining streams t...
Article
Full-text available
Studies of the global sea-level budget (SLB) and the global ocean-mass budget (OMB) are essential to assess the reliability of our knowledge of sea-level change and its contributors. Here we present datasets for times series of the SLB and OMB elements developed in the framework of ESA's Climate Change Initiative. We use these datasets to assess th...
Article
Full-text available
River networks are among Earth’s most threatened hot-spots of biodiversity and provide key ecosystem services (e.g., supply drinking water and food, climate regulation) essential to sustaining human well-being. Climate change and increased human water use are causing more rivers and streams to dry, with devastating impacts on biodiversity and ecosy...
Article
Full-text available
Continental- to global-scale hydrologic and land surface models increasingly include representations of the groundwater system. Such large-scale models are essential for examining, communicating, and understanding the dynamic interactions between the Earth system above and below the land surface as well as the opportunities and limits of groundwate...
Preprint
Full-text available
Several safe boundaries of critical Earth system processes have already been crossed by human perturbations. Recent research indicates that not accounting for the interactions between these processes may further narrow the safe operating space for humanity. Yet existing work accounts only for transgression of single boundaries and only a few studie...
Chapter
Full-text available
Zusammenfassung Um die vielfältigen Risiken des Klimawandels zu verringern, ist es notwendig, diese in lokalen partizipativen Prozessen mit Stakeholdern und Wissenschaftler*innen zu analysieren und zu bewerten und Strategien zur Risikoverringerung entwickeln. Dabei spielen verschiedene Arten von Unsicherheiten eine wichtige Rolle und sollten expliz...
Article
Full-text available
Global water models (GWMs) simulate the terrestrial water cycle, on the global scale, and are used to assess the impacts of climate change on freshwater systems. GWMs are developed within different modeling frameworks and consider different underlying hydrological processes, leading to varied model structures. Furthermore, the equations used to des...
Article
Full-text available
Global water models (GWMs) simulate the terrestrial water cycle on the global scale and are used to assess the impacts of climate change on freshwater systems. GWMs are developed within different modelling frameworks and consider different underlying hydrological processes, leading to varied model structures. Furthermore, the equations used to desc...
Article
Full-text available
Drought is understood as both a lack of water (i.e., a deficit compared to demand) and a temporal anomaly in one or more components of the hydrological cycle. Most drought indices, however, only consider the anomaly aspect, i.e., how unusual the condition is. In this paper, we present two drought hazard indices that reflect both the deficit and ano...
Preprint
Full-text available
Studies of the global sea-level budget (SLB) and the global ocean-mass budget (OMB) are essential to assess the reliability of our knowledge of sea-level change and its contributions. Here we present datasets for times series of the SLB and OMB elements developed in the framework of ESA's Climate Change Initiative. We use these datasets to assess t...
Presentation
Full-text available
Unlike global climate models, hydrological models cannot simulate the feedbacks among atmospheric processes, vegetation, water, and energy exchange at the land surface. This severely limits their ability to quantify the impact of climate change and the concurrent increase of atmospheric CO 2 concentrations on evapotranspiration and thus runoff. Hyd...
Preprint
Full-text available
Continental- to global-scale hydrologic and land surface models increasingly include representations of the groundwater system. Such large-scale models are essential for examining, communicating, and understanding the dynamic interactions between the Earth System above and below the land surface as well as the opportunities and limits of groundwate...
Article
Full-text available
Electricity production by hydropower is negatively affected by drought. To understand and quantify risks of less than normal streamflow for hydroelectricity production (HP) at the global scale, we developed an HP model that simulates time series of monthly HP worldwide and thus enables analyzing the impact of drought on HP. The HP model is based on...
Research
Full-text available
Standard model output of WaterGAP 2.2d as published in https://doi.org/10.5194/gmd-14-1037-2021
Article
Full-text available
Billions of people rely on groundwater as being an accessible source of drinking water and for irrigation, especially in times of drought. Its importance will likely increase with a changing climate. It is still unclear, however, how climate change will impact groundwater systems globally and, thus, the availability of this vital resource. Groundwa...
Article
Full-text available
WaterGAP is a global hydrological model that quantifies human use of groundwater and surface water as well as water flows and water storage and thus water resources on all land areas of the Earth. Since 1996, it has served to assess water resources and water stress both historically and in the future, in particular under climate change. It has impr...
Preprint
Full-text available
Global water models (GWMs) simulate the terrestrial water cycle, on the global scale, and are used to assess the impacts of climate change on freshwater systems. GWMs are developed within different modeling frameworks and consider different underlying hydrological processes, leading to varied model structures. Furthermore, the equations used to des...
Article
Full-text available
Ocean mass and thus sea level is significantly affected by water storage on the continents. However, assessing the net contribution of continental water storage change to ocean mass change remains a challenge. We present an integrated version of the WaterGAP global hydrological model that is able to consistently simulate total water storage anomali...
Preprint
Full-text available
Continental- to global-scale hydrologic and land surface models increasingly include representations of the groundwater system, driven by crucial Earth science and sustainability problems. These models are essential for examining, communicating, and understanding the dynamic interactions between the Earth System above and below the land surface as...
Preprint
Full-text available
Drought is understood as both a lack of water (i.e., a deficit as compared to some requirement) and an anomaly in the condition of one or more components of the hydrological cycle. Most drought indices, however, only consider the anomaly aspect, i.e., how unusual the condition is. In this paper, we present two drought hazard indices that reflect bo...
Preprint
Full-text available
WaterGAP is a global hydrological model that quantifies human use of groundwater and surface water as well as water flows and water storage and thus water resources on all land areas of the Earth. Since 1996, it has served to assess water resources and water stress both historically and in the future, in particular under climate change. It has impr...
Preprint
Full-text available
Billions of people rely on groundwater as an accessible source for drinking water and irrigation, especially in times of drought. Its importance will likely increase with a changing climate. It is still unclear, however, how climate change will 25 impact groundwater systems globally and thus the availability of this vital resource. This study inves...
Conference Paper
Full-text available
Billions of people rely on groundwater that is an accessible source for drinking water and irrigation especially in times of drought. This importance will likely increase with a changing climate. It is still unclear, however, to what extent climate change will globally impact groundwater systems and thus the availability of this important resource....
Conference Paper
Full-text available
Freshwater availability is of vital importance for humans, freshwater biota and ecosystem functions. In the past decades, global hydrological models (GHMs) were developed to improve understanding of the global freshwater situation in a globalized word, by filling gaps in observational coverage and assessing scenarios of the future under considerati...
Article
Full-text available
During the last decades, the endorheic Lake Urmia basin in northwestern Iran has suffered from declining groundwater tables and a very strong recent reduction in the volume of Lake Urmia. For the case of Lake Urmia basin, this study explores the value of different locally and globally available observation data for adjusting a global hydrological m...
Conference Paper
Full-text available
Drought is a recurrent global phenomenon considered one of the most complex hazards with manifold impacts on communities, ecosystems, and economies. While many sectors are affected by drought, agriculture's high dependency on water makes it particularly susceptible to droughts, threatening the livelihoods of many, and hampering the achievement of t...
Article
Full-text available
Global‐scale gradient‐based groundwater models are a new endeavor for hydrologists who wish to improve global hydrological models (GHMs).In particular, the integration of such groundwater models into GHMs improves the simulation of water flows between surface water and groundwater and of capillary rise and thus evapotranspiration.Currently, these m...
Article
Full-text available
Droughts continue to affect ecosystems, communities and entire economies. Agriculture bears much of the impact, and in many countries it is the most heavily affected sector. Over the past decades, efforts have been made to assess drought risk at different spatial scales. Here, we present for the first time an integrated assessment of drought risk f...
Preprint
Full-text available
Abstract. Continental water mass change affects ocean mass change (OMC). Assessing the net contribution, however, remains a challenge. We present an integrated version of the WaterGAP global hydrological model that is able to simulate total continental water storage anomalies (TWSA) over the global continental area (except Greenland and Antarctica)...
Article
Full-text available
Clarifying characteristics of hazards and risks of climate change at 2 °C and 1.5 °C global warming is important for understanding the implications of the Paris Agreement. We perform and analyze large ensembles of 2 °C and 1.5 °C warming simulations. In the 2 °C runs, we find substantial increases in extreme hot days, heavy rainfalls, high streamfl...
Article
Full-text available
Wetlands such as bogs, swamps or freshwater marshes are hotspots of biodiversity. For 5.1 million km2 of inland wetlands, the dynamics of area and water storage, which strongly impact biodiversity and ecosystem services, were simulated using the global hydrological model WaterGAP. For the first time, the impacts of both human water use and man‐made...
Article
Full-text available
In global hydrological models, groundwater stor-ages and flows are generally simulated by linear reservoir models. Recently, the first global gradient-based groundwater models were developed in order to improve the representation of groundwater-surface-water interactions, capillary rise, lateral flows, and human water use impacts. However , the rel...
Article
Full-text available
Present-day global mean sea level rise is caused by ocean thermal expansion, ice mass loss from glaciers and ice sheets, as well as changes in terrestrial water storage. For that reason, sea level is one of the best indicators of climate change as it integrates the response of several components of the climate system to internal and external forcin...
Article
Full-text available
Droughts continue to affect ecosystems, communities, and entire economies. Agriculture bears much of the impact, and in many countries it is the most heavily affected sector. Over the past decades, efforts have been made to assess drought risk at different spatial scales. Here, we present for the first time an integrated assessment of drought risk...
Article
Full-text available
In global hydrological models, groundwater (GW) is typically represented by a bucket-like linear groundwater reservoir. Reservoir models, however, (1) can only simulate GW discharge to surface water (SW) bodies but not recharge from SW to GW, (2) provide no information on the location of the GW table, and (3) assume that there is no GW flow among g...
Presentation
Over the last century, the global population has quadrupled and has altered terrestrial water fluxes significantly. The need to manage water over large domains and to understand the involved processes has launched the development of large scale and global hydrological models. Recently, global-scale groundwater models have been proposed to complete...
Article
Full-text available
We quantified groundwater stress worldwide by applying the global water resources and water use model WaterGAP 2.2b (Water ‐ Global Assessment and Prognosis) for current conditions (1981–2010) as well as for the 2050s under the worst‐case greenhouse gas emissions scenario RCP8.5. To improve global‐scale groundwater stress assessments, we suggest th...
Article
Full-text available
Plain Language Summary We are relying more and more on global models to understand the water cycle, but we need to assess the reliability of model output. In this study we compare seasonal amplitudes in land total water storage from global models with those from GRACE satellite data in river basins globally. We found that seasonal amplitudes in tot...
Preprint
Continental- to global-scale hydrologic models increasingly include representations of the Earth’s groundwater system. A key question is how to evaluate the realism and performance quality of such large-scale groundwater models given limitations in data availability. We argue for a transparent approach to system conceptualization, which would enabl...
Article
Full-text available
While there has been significant progress regarding the research mode “transdisciplinary research” (TDR) on a theoretical level, case studies describing specific TDR processes and the applied methods are rare. The aim of this paper is to describe how the first phase (Phase A) of a TDR project can be carried out in practice and to evaluate its accom...
Presentation
Global-scale hydrological models have recently moved to include gradient-based groundwater models to better represent groundwater-surface water interactions, lateral and vertical flows as well as human water use impacts.G3M is a new MODFLOW-like groundwater model with a spatial resolution of 5’ that replaces the former linear groundwater reservoir...
Poster
Full-text available
A key challenge in the projection of climate change (CC) impacts on hydrological hazards is the uncertainty, mainly from climate projections and hydrological modeling. Therefore, it is the state of the art to use the multi-model ensemble (MME) based information for quantifying potential CC impacts. A considerable amount of studies have been done ba...
Poster
Full-text available
The project GlobeDrought aims to develop a stakeholder-supported web-based drought information system that provides spatial descriptions of drought risks with consideration of three components: (i) drought hazard, (ii) exposure, and (iii) vulnerability. The focus is on water supply for human and ecosystems, crop productivity and the need for intern...
Conference Paper
Full-text available
In times of drought, water resources are insufficient. These water shortages often have negative effects on agricultural productivity and on associated socioeconomic factors, causing reduced income, food shortages and even famines. The overall objective of GlobeDrought is to develop an integrated drought risk information system which will adequatel...
Preprint
Full-text available
In global hydrological models, groundwater storages and flows are generally simulated by linear reservoir models. Recently, the first global gradient-based groundwater models were developed in order to improve the representation of groundwater-surface water interactions, capillary rise, lateral flows and human water use impacts. However, the reliab...
Article
Water scarcity is rapidly increasing in many regions. In a novel, multi-model assessment, we examine how human interventions (HI: land use and land cover change, man-made reservoirs and human water use) affected monthly river water availability and water scarcity over the period 1971-2010. Here we show that HI drastically change the critical dimens...
Poster
Full-text available
Continental and global-scale groundwater models have been proposed recently to complete and improve the simulation of the hydrologic cycle. This development is still impeded by the resolution of these models either due to data availability and/or computational demands. One of the major challenges is determining the location of surface water bodies...
Article
Full-text available
During the last decades, the endorheic Lake Urmia basin in northwestern Iran has suffered from decreased precipitation, groundwater levels and a very strong reduction in the volume and more recently also in the extent of Lake Urmia. Human water use has exacerbated the desiccating impact of climatic variations. This study quantifies the contribution...
Presentation
Full-text available
To represent groundwater-surface water interactions, lateral flows as well as human water use impacts on head dynamics and the impact of capillary rise on evapotranspiration it is necessary to simulate the location and temporal variation of the groundwater table. Global-scale hydrological models (GHMs) have recently moved to include these processes...
Preprint
Full-text available
To quantify water flows between groundwater (GW) and surface water (SW) as well as the impact of capillary rise on evapotranspiration by global hydrological models (GHMs), it is necessary to replace the bucket-like linear GW reservoir model typical for hydrological models with a fully integrated gradient-based GW flow model. Linear reservoir models...
Chapter
Zur Identifizierung und Umsetzung nachhaltiger Handlungsoptionen ist eine transdisziplinäre Wissensintegration notwendig, die im Rahmen partizipativer Prozesse (PP) erfolgt. Dabei ist eine interdisziplinäre Wissensintegration zwischen den problemrelevanten wissenschaftlichen Disziplinen Grundlage für eine Integration mit sektoralem Stakeholderwisse...
Poster
Full-text available
Development of a global drought information system (DIS) useful for: To comprehensively quantify (potential) droughts impacts Support possibility of better drought management and reduce drought vulnerability, especially for affected area with lower capacity drought capacity. Provide DIS capacity to all drought prone regions Background