A5070463730- Hydrology and Watershed Management Studies
- Hydrology and Drought Analysis
- Flood Risk Assessment and Management
- Groundwater flow and contamination studies
- Cryospheric studies and observations
- Climate change and permafrost
- Climate variability and models
- Soil and Water Nutrient Dynamics
- Water resources management and optimization
- Soil erosion and sediment transport
- Soil and Unsaturated Flow
- Meteorological Phenomena and Simulations
- Hydrological Forecasting Using AI
- Hydrology and Sediment Transport Processes
- Water-Energy-Food Nexus Studies
- Precipitation Measurement and Analysis
- Groundwater and Isotope Geochemistry
- Soil Moisture and Remote Sensing
- Plant Water Relations and Carbon Dynamics
- Peatlands and Wetlands Ecology
- Reservoir Engineering and Simulation Methods
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Landslides and related hazards
- Geophysics and Gravity Measurements
Global Institute for Water Security
2016-2025
Imperial College London
2012-2025
University of Saskatchewan
2016-2025
Goethe University Frankfurt
2024
Google (United States)
2013
Kensington College of Business
2013
WRc (United Kingdom)
2001
National Farmers Union
2001
Abstract Conceptual modelling requires the identification of a suitable model structure and estimation parameter values through calibration against observed data. A lack objective approaches to evaluate structures inability procedures distinguish between suitability different sets are major sources uncertainty in current procedures. This paper presents an approach analysing performance dynamic fashion resulting improved use available information. Model can be evaluated with respect failure...
Abstract. Many existing hydrological modelling procedures do not make best use of available information, resulting in non-minimal uncertainties model structure and parameters, a lack detailed information regarding behaviour. A framework is required that balances the level complexity supported by data with performance suitable for desired application. Tools are needed optimal to identify allow analysis This should result appropriate levels as function data, system characteristics purpose....
A new approach to regionalization of conceptual rainfall‐runoff models is presented on the basis ensemble modeling and model averaging. It argued that in principle, this represents an improvement established procedure regressing parameter values against numeric catchment descriptors. Using daily data from 127 catchments United Kingdom, alternative schemes for defining prior posterior likelihoods candidate are tested terms accuracy ungauged predictions. probability distributed structure used,...
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...
Abstract. Human activities have caused various changes to the Earth system, and hence interconnections between human system should be recognized reflected in models that simulate processes. One key anthropogenic activity is water resource management, which determines dynamics of human–water interactions time space controls livelihoods economy, including energy food production. There are immediate needs include management models. First, extent requirements increasing rapidly at global scale...
Abstract. Reservoirs significantly affect flow regimes in watershed systems by changing the magnitude and timing of streamflows. Failure to represent these effects limits performance hydrological land-surface models (H-LSMs) many highly regulated basins across globe applicability such investigate futures through scenario analysis (e.g., scenarios climate, land use, or reservoir regulation changes). An adequate representation reservoirs their operation an H-LSM is therefore essential for a...
In the early 1990s a cluster of extreme flood events occurred in south Galway region western Ireland, and this led to speculation changing rainfall patterns area. paper we illustrate use generalized linear models (GLMs) test for such changes quantify their structure. GLMs, long established statistical literature, provide flexible rigorous formal framework within which distinguish between possible climate change scenarios are able deal with high levels variability, as those typically...
We consider the problem of simulating sequences daily rainfall at a network sites in such way as to reproduce variety properties realistically over range spatial scales. The interest will vary between applications but typically include some measures “extreme” addition means, variances, proportions wet days, and autocorrelation structure. Our approach is fit generalized linear model (GLM) rain gauge data and, with appropriate incorporation intersite dependence structure, use GLM generate...
Abstract The freshwater environment is facing unprecedented global pressures. Unsustainable use of surface and groundwater ubiquitous. Gross pollution seen in developing economies, nutrient a threat to aquatic ecosystems, flood damage increasing. Droughts have severe local consequences, but effects on food can be global. These current pressures are set the context rapid environmental change socio‐economic development, population growth, weak fragmented governance. We ask what should role...
Abstract The Global Precipitation Measurement (GPM) mission offers new opportunities for modeling a range of physical/hydrological processes at higher resolutions, especially remote river systems where the hydrometeorological monitoring network is sparse and weather radar not readily available. In this study, recently released Integrated Multisatellite Retrievals GPM [version 03 (V03) IMERG Final Run] product with high spatiotemporal resolution 0.1° 30 min evaluated against ground-based...
In this paper, we discuss the multiple dimensions of water security and define a set thematic challenges for science, policy governance, based around cross-scale dynamics, complexity uncertainty. A case study Saskatchewan River basin (SRB) in western Canada is presented, which encompasses many water-security faced worldwide. science agenda defined on development SRB as large-scale observatory to develop underpinning social needed improve our understanding futures under societal environmental...
Abstract. Human water use has significantly increased during the recent past. Water withdrawals from surface and groundwater sources have altered terrestrial discharge storage, with large variability in time space. These are driven by sectoral demands for water, but commonly subject to supply constraints, which determine allocation. allocation, therefore, should be considered together demand appropriately included Earth system models address various large-scale effects or without considering...
Abstract. While there is a popular perception that Canada water-rich country, the Saskatchewan River basin (SRB) in Western exemplifies multiple threats to water security seen worldwide. It Canada's major food-producing region and home globally significant natural resource development. The SRB faces current challenges stemming from (1) series of extreme events, including flood drought events since turn 21st century, (2) full allocation existing resources parts basin, (3) rapid population...
Abstract. A number of global and regional gridded climate products based on multiple data sources are available that can potentially provide reliable estimates precipitation for hydrological studies. However, research into the consistency these various regions has been limited in many cases non-existent. This study inter-compares several over 15 terrestrial ecozones Canada different seasons. The spatial temporal variability errors (relative to station observations) was quantified period 1979...