A5067526747- Hydrology and Watershed Management Studies
- Climate variability and models
- Flood Risk Assessment and Management
- Hydrology and Drought Analysis
- Climate change impacts on agriculture
- Atmospheric and Environmental Gas Dynamics
- Water resources management and optimization
- Transboundary Water Resource Management
- Plant Water Relations and Carbon Dynamics
- Methane Hydrates and Related Phenomena
- Environmental and Ecological Studies
- Global Energy and Sustainability Research
- Cryospheric studies and observations
- Hydrological Forecasting Using AI
- Geography and Environmental Studies in Latin America
- Regional Development and Innovation
- Water-Energy-Food Nexus Studies
- Marine and coastal ecosystems
- Atmospheric Ozone and Climate
- Soil erosion and sediment transport
- Agricultural risk and resilience
- Solar Energy Systems and Technologies
- Plant responses to elevated CO2
- Climate Change and Sustainable Development
- Fire effects on ecosystems
Global Water Partnership
2024
Stockholm International Water Institute
2023
World Meteorological Organization
2017-2022
Potsdam Institute for Climate Impact Research
2012-2021
Observatoire de Paris
2021
Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
2021
Centre National de la Recherche Scientifique
2021
Leibniz Association
2020
University of Potsdam
2014
Abstract. Human-induced atmospheric composition changes cause a radiative imbalance at the top of atmosphere which is driving global warming. This Earth energy (EEI) most critical number defining prospects for continued warming and climate change. Understanding heat gain system – particularly how much where distributed fundamental to understanding this affects ocean, land; rising surface temperature; sea level; loss grounded floating ice, are concerns society. study Global Climate Observing...
The co-occurrence of warm spells and droughts can lead to detrimental socio-economic ecological impacts, largely surpassing the impacts either or alone. We quantify changes in number compound from 1979 2018 Mediterranean Basin using ERA5 data set. analyse two types events: 1) season events, which are extreme absolute terms May October 2) year-round deseasonalised relative respective time year. events increases significantly especially increasing strongly – with an annual growth rates 3.9...
Abstract Fossil fuel combustion, land use change and other human activities have increased the atmospheric carbon dioxide (CO 2 ) abundance by about 50% since beginning of industrial age. The CO growth rates would been much larger if natural sinks in biosphere ocean had not removed over half this anthropogenic . As these emissions grew, uptake response to increases partial pressure (pCO ). On land, gross primary production also increased, but dynamics key aspects cycle varied regionally....
Abstract. This study aims to compare impacts of climate change on streamflow in four large representative African river basins: the Niger, Upper Blue Nile, Oubangui and Limpopo. We set up eco-hydrological model SWIM (Soil Water Integrated Model) for all basins individually. The validation models shows results from adequate very good, depending quality availability input calibration data. For impact assessment, we drive with outputs five bias corrected Earth system Coupled Model...
Abstract. Climate change impacts on hydrological processes should be simulated for river basins using validated models and multiple climate scenarios in order to provide reliable results stakeholders. In the last 10–15 years, impact assessment has been performed many worldwide different models. However, their are hardly comparable, do not allow one create a full picture of uncertainties. Therefore, systematic intercomparison is suggested, which done representative regions state-of-the-art...
An intercomparison of climate change impacts projected by nine regional-scale hydrological models for 12 large river basins on all continents was performed, and sources uncertainty were quantified in the framework ISIMIP project. The ECOMAG, HBV, HYMOD, HYPE, mHM, SWAT, SWIM, VIC WaterGAP3 applied following basins: Rhine Tagus Europe, Niger Blue Nile Africa, Ganges, Lena, Upper Yellow Yangtze Asia, Mississippi, MacKenzie Amazon America, Darling Australia. model calibration validation done...
Past and the projected future climate change in Afghanistan has been analyzed systematically differentiated with respect to its different regions gain some first quantitative insights into Afghanistan’s vulnerability ongoing changes. For this purpose, temperature, precipitation five additional indices for extremes agriculture assessments (heavy precipitation; spring growing season length (GSL), Heat Wave Magnitude Index (HWMI); Standardized Precipitation Evapotranspiration (SPEI)) from...
We investigate simulated hydrological extremes (i.e., high and low flows) under the present future climatic conditions for five river basins worldwide: Ganges, Lena, Niger, Rhine, Tagus. Future projections are based on GCMs four emission scenarios. analyse results from HYPE, mHM, SWIM, VIC WaterGAP3 models calibrated validated to simulate each river. The use of different impact allows an assessment uncertainty impacts. analysis is conducted time horizons: reference (1981–2010), early-century...
ABSTRACT Life on Earth vitally depends the availability of water. Human pressure freshwater resources is increasing, as human exposure to weather-related extremes (droughts, storms, floods) caused by climate change. Understanding these changes pivotal for developing mitigation and adaptation strategies. The Global Climate Observing System (GCOS) defines a suite essential variables (ECVs), many related water cycle, required systematically monitor Earth’s system. Since long-term observations...
This study intends to contribute the ongoing discussion on whether land use and cover changes (LULC) or climate trends have major influence observed increase of flood magnitudes in Sahel. A simulation-based approach is used for attributing postulated drivers. For this purpose, ecohydrological model SWIM (Soil Water Integrated Model) with a new, dynamic LULC module was set up Sahelian part Niger River until Niamey, including main tributaries Sirba Goroul. The driven observed, reanalyzed data...
Abstract. Droughts are often long-lasting phenomena, without a distinct start or end and with impacts cascading across sectors systems, creating long-term legacies. Nevertheless, our current perceptions management of droughts their event-based, which can limit the effective assessment drought risks reduction impacts. Here, we advocate for changing this perspective viewing as hydrological–ecological–social continuum. We take systems theory focus on how “memory” causes feedback interactions...
Abstract. Droughts are often long lasting phenomena, without a distinct start or end, and with impacts cascading across sectors systems, creating long-term legacies. Nevertheless, our current perception management of droughts their is event-based, which can limit the effective assessment drought risks reduction impacts. Here, we advocate for changing this perspective viewing as hydro-eco-social continuum. We take systems theory focus on how “memory” causes feedback interactions between parts...
Lightning is a symptom and cause of climate change. A recently established task team working to make lightning data available useful for science service applications.
This study analyses the increasing number of catastrophic floods in Niger River Basin, focusing on relation between long term hydro-climatic variability and flood risk over last 40 to 100 years. Time series for three subregions (Guinean, Sahelian, Benue) show a general consistency annual maximum discharge (AMAX) climatic decadal patterns West Africa regarding both trends major changepoints. Variance analysis reveals rather stable AMAX distributions except Sahelian region, implying that...
The choice of the baseline period, intentionally chosen or not, as a reference for assessing future changes any projected variable can play an important role resulting statement. In regional climate impact studies, well-established arbitrarily baselines are often used without being questioned. Here we investigated effects different periods on interpretation discharge simulations from eight river basins in period 1960–2099. were forced by four bias-adjusted and downscaled Global Climate...
Abstract. This study addresses the increasing flood risk in Niger basin and assesses damages that arise from flooding. Statistics three different sources (EM-DAT, Darthmouth Flood Observatory, NatCat Munich RE) on people affected by floods show positive trends for entire beginning 1980s. An assessment of four subregions across indicates even exponential Sahelian Sudanian regions. These flooding damage match up to a time series annual maximum discharge (AMAX): strongest AMAX are detected...
This study assesses the flood characteristics (timing, magnitude and frequency) in pre-industrial historical periods, analyzes climate change impacts on floods at warming levels of 1.5, 2.0 3.0 K above level four large river basins as required by Paris agreement. Three well-established hydrological models (HMs) were forced with bias-corrected outputs from global (GCMs) for pre-industrial, future periods until 2100. The long subdivided into multiple 31-year subperiods to investigate natural...
The Kunduz River is one of the main tributaries Amu Darya Basin in North Afghanistan. Many communities live (KRB), and its water resources have been basis their livelihoods for many generations. This study investigates climate change impacts on KRB catchment. Rare station data are, first time, used to analyze systematic trends temperature, precipitation, river discharge over past few decades, while using Mann–Kendall Theil–Sen trend statistics. show that hydrology basin changed significantly...