A5089829615- Hydrology and Watershed Management Studies
- Water resources management and optimization
- Flood Risk Assessment and Management
- Water-Energy-Food Nexus Studies
- Cryospheric studies and observations
- Irrigation Practices and Water Management
- Geophysics and Gravity Measurements
- Hydrological Forecasting Using AI
- Computational Physics and Python Applications
- Climate variability and models
- Groundwater flow and contamination studies
- Hydrology and Drought Analysis
- Fish Ecology and Management Studies
- Climate change impacts on agriculture
- Water Systems and Optimization
- Climate change and permafrost
- Smart Cities and Technologies
- Architecture and Computational Design
- Water Resources and Management
- Innovative Approaches in Technology and Social Development
- 3D Shape Modeling and Analysis
- Integrated Water Resources Management
- Transboundary Water Resource Management
- Environmental Science and Water Management
- Groundwater and Isotope Geochemistry
International Institute for Applied Systems Analysis
2018-2025
ETH Zurich
2025
McGill University
2015-2020
Abstract. We develop a new large-scale hydrological and water resources model, the Community Water Model (CWatM), which can simulate hydrology both globally regionally at different resolutions from 30 arcmin to arcsec daily time steps. CWatM is open source in Python programming environment has modular structure. It uses global, freely available data netCDF4 file format for reading, storage, production of compact way. includes general surface groundwater processes but also takes into account...
The Danube River Basin, spanning 19 countries and covering 801,000 km², is the most international river basin in world. This region faces diverse challenges related to water quantity, quality, groundwater management, biodiversity, all of which are expected intensify due climate change. To address these challenges, a holistic sustainable management approach needed—one that integrates environmental, social, economic dimensions, ensures stakeholder involvement, aligns with...
Significant increases in water withdrawals over the past century have driven severe environmental challenges worldwide, including scarcity, declining quality, and loss of freshwater biodiversity. These are projected to intensify due climate societal changes coming decades. To address these issues, it is critical define a Safe Operating Space (SOS) for resources that ensures sustainable adequate supply, meeting quality standards both human needs natural ecosystems.Building on Planetary...
Abstract Uncalibrated global hydrological models are primarily used to inform projections of flood and drought changes under warming their impacts, but it remains unclear how model calibration might benefit these projections. Using the Yangtze River Basin as a case study, we compare projected in frequencies impacts—area, population, gross domestic product affected—at various levels, from uncalibrated calibrated simulations with Community Water Model. These driven by 10 General Circulation...
Abstract. Humans play a large role in the hydrological system, e.g. by extracting amounts of water for irrigation, often resulting stress and ecosystem degradation. By implementing large-scale adaptation measures, such as construction irrigation reservoirs, degradation can be reduced. Yet we know that many decisions, adoption more effective techniques or changing crop types, are made at farm level heterogeneous farmer population. While these decisions usually advantageous an individual their...
Abstract Many drinking water utilities face immense challenges in supplying sustainable, drought-resilient services to households. Here we propose a quantified framework perform drought risk analysis on ~5600 potable supply and evaluate the benefit of adaptation actions. We identify global hotspots present-day mid-century under future scenarios climate change demand growth (namely, SSP1-2.6, SSP3-7.0, SSP5-8.5). estimate mean rate unsustainable or disrupted utility at 15% (interquartile...
The combined impacts of climate change, river basin management, planning and development on the components Water-Energy-Food-Environment (WEFE) nexus are different depending specific scale location where they assessed. This implies that a wide variety natural anthropogenic should be modelled together to obtain comprehensive picture inter-connections tradeoffs among WEFE components. main goal high-resolution modelling framework we will present is provide quantitative for evaluating indicators...
Mountains play a critical role in water provision and use the lowlands, with timing magnitude of runoff being key determinants availability. Climate change is projected to alter dynamics globally. This will affect interplay between mountain lowland and, thus, While many studies have focused on changes individual river basins, occasionally contrasting lowlands mountains, we lack information about how differ across basins worldwide these characteristics may future. Moreover, examining future...
Pune, near Mumbai, is India’s 9th most populated city. As an emerging megacity, Pune projected to grow from 7.4 11.4 million residents by 2050. At that time, a two-year drought under moderate climate change would lead extraordinary water supply challenges, especially for the urban poor. Without policy interventions mid-century, low-income population will be unduly affected shortages as indicated Gini coefficient exceeding 0.4. This inequity occurs households experience unaffordable...
GEB is a new socio-hydrological model coupling an agent-based adaptation model, fully distributed hydrological (CWatM), hydrodynamic (SFINCS), and forest evolution (plantFATE). The simulates hundreds to millions of individual households, such as crop farmers, which can dynamically respond their environment, for example, through switching crops irrigation techniques. Moreover, households adapt changes in flood risk events by wet- or dry-proofing house. All decisions consider heterogeneity the...
• Crop kites quantifies the potential of optimizing irrigation water. Spatiotemporal redistribution water can significantly increase productivity. Basin-wide management Increasing productivity by decreasing use and increasing food production.
Abstract. In the context of changing climate and increasing water demand, large-scale hydrological models are helpful for understanding projecting future resources across scales. Groundwater is a critical freshwater resource strongly controls river flow throughout year. It also essential ecosystems contributes to evapotranspiration, resulting in feedback. However, groundwater systems worldwide quite diverse, including thick multilayer aquifers thin heterogeneous aquifers. Recently, efforts...
Abstract. We develop a new large-scale hydrological and water resources model, the Community Water Model (CWatM), which can simulate hydrology both globally regionally at different resolutions from 30 arc min to sec daily time steps. CWatM is open-source in Python programming environment has modular structure. It uses global, freely available data netCDF4 file format for reading, storage, production of compact way. includes general surface groundwater processes, but also takes into account...
Systems models of the Food–Water–Energy (FWE) nexus face a conceptual difficulty: systematic integration local stakeholder perspectives into coherent framework for analysis. We present novel procedure to co-produce and systematize real-life complexity knowledge forge it clear-cut set challenges. These are clustered Pressure–State–Response (PSIR) framework, which ultimately guides development systems model closely attuned needs stakeholders. apply this approach case emerging megacity Pune...
Abstract. The Global Runoff Data Centre (GRDC) provides time series of observed discharges and information on hydrometric stations that are valuable for calibrating validating the results hydrological models. We address a common issue in large-scale hydrology has not been satisfactorily solved, though investigated several times. To compare simulated discharge, grid-based models must fit reported station locations to resolution-dependent gridded river network. introduce an...
Abstract A sufficient freshwater supply is vital for humans, ecosystems, and economies, but anticipated climate socio-economic change are expected to substantially alter water availability. Across Europe, about two-third of the abstracted comes from rivers streams. Various hydrological studies address resulting need projections on changes in river discharge. However, those assessments rarely specifically account impact various withdrawal scenarios during low flow periods. We present here a...
Abstract. Numerical models are simplified representations of the real world at a finite level complexity. Global water used to simulate global cycle and their outputs contribute evaluation important natural societal issues, including availability, flood risk ecological functioning. Whilst modelling is an area science that has developed over several decades, individual model-specific descriptions exist for some models, there date been no attempt visualize ways work, using standardized...
Abstract Mountain areas play a vital role in global water resources as they often generate disproportionally high runoff and seasonally delay due to storage snow ice. Water originating from mountains is used satisfy human demand further downstream the lowlands of corresponding river basins. Although relevance for supply widely acknowledged, our current quantitative knowledge their use on scale remains limited decadal averages. As both mountain have strong seasonality, it crucial assess...
Abstract. In the context of changing climate and increasing water demand, large-scale hydrological models are helpful for understanding projecting future resources across scales. Groundwater is a critical freshwater resource strongly controls river flow throughout year. It also essential ecosystems contributes to evapotranspiration, resulting in feedback. However, groundwater systems worldwide quite diverse, including thick multi-layer aquifers thin heterogeneous aquifers. Recently, efforts...
Abstract. Humans play a large role in the hydrological system; for example, by extracting amounts of water irrigation, often resulting stress and ecosystem degradation. By implementing large-scale adaptation measures, such as construction irrigation reservoirs, degradation can be reduced. Yet we know that many decisions, adoption more effective techniques or changing crop types, are made at farm level heterogeneous farmer population. While these decisions advantageous an individual their...
Large cities worldwide are increasingly suffering from a nexus of food, water, and energy supply challenges. This complex can be analyzed with modern physico-economic system models. Only when practical knowledge those affected, experts, decision makers is incorporated alongside various other data sources, however, the analyses suitable for policy advice. Here, we present concept “Sustainability Nexus Workshops” extracting preparing relevant modeling apply it to case Amman, Jordan. The...