A5088381749- Hydrology and Watershed Management Studies
- Hydrology and Drought Analysis
- Hydrological Forecasting Using AI
- Climate variability and models
- Flood Risk Assessment and Management
- Hydrology and Sediment Transport Processes
- Groundwater flow and contamination studies
- Cryospheric studies and observations
- Disaster Management and Resilience
- Catalytic Processes in Materials Science
- Meteorological Phenomena and Simulations
- Soil erosion and sediment transport
- Fish Ecology and Management Studies
- Water resources management and optimization
- Catalysts for Methane Reforming
- Infrastructure Resilience and Vulnerability Analysis
- Air Quality and Health Impacts
- Climate Change and Health Impacts
- Catalysis and Oxidation Reactions
University of Calgary
2024-2025
Concordia University
2019-2021
Abstract Storms include a range of weather events resulting in heavy liquid and solid precipitation high winds. These critically impact crops natural resources and, turn, health, economy, infrastructure safety. The intensity frequency the physical mechanisms triggering storms will most likely increase under global warming due to changing flows water energy atmosphere. Addressing storm threats holistically requires nexus approach that links climate change, infrastructure, human prosperity...
Abstract Extreme rainfall events are expected to intensify with global warming, posing significant challenges both human and natural environments. Despite the importance of such assessments, they unevenly widespread across globe. Here, using bias corrected climate simulations latest phase Coupled Model Intercomparison Project (CMIP6), we provide a comprehensive assessment on how different change Brazil. Specifically, (a) explored projected changes in intensity frequency belonging right‐tail...
Hydrological droughts are often viewed through the immediate lens of atmospheric droughts, driven by precipitation deficits and evaporative demand. However, these can be exacerbated long-term impacts baseflow changes, which alter groundwater-fed streamflow critical for sustaining hydrological systems during prolonged dry periods. This study employs a global dataset 7,138 catchments PCMCI+ causal discovery algorithm to unravel spatiotemporal drivers changes their relationship with drought...
Agriculture is a cornerstone of global food production, accounting for substantial portion water withdrawals worldwide. As the world’s population grows, so does demand in agriculture, leading to alterations regional water–energy balances. We present an approach identify influence agriculture on balance using empirical data. explore departure from Budyko curve catchments with agricultural expansion and their associations changes causal discovery algorithm. Analyzing data 1,342 across three...
The Budyko water balance is a fundamental concept in hydrology that links aridity to how precipitation divided between evapotranspiration and streamflow. While the model powerful, its ability explain temporal changes influence of human activities climate change limited. Here we introduce causal discovery algorithm explore deviations from balance, attributing them interventions such as agricultural snow dynamics. Our analysis 1342 catchments across U.S. Great Britain reveals distinct...
Changing natural streamflow conditions apply pressure on water supply systems globally. Understanding potential vulnerabilities using IPCC-endorsed top-down impact assessments, however, is limited due to uncertainties in climate and/or hydrological models. In recent years, bottom-up stress tests have been proposed avoid some of the but uncertainty approaches and its vulnerability assessments are poorly understood. Here, we aim at addressing that originate from synthetic realizations regional...
Abstract Baseflow, the sustained flow from groundwater, lakes, and snowmelt, is essential for maintaining surface water flow, particularly during droughts. Amid rising global demands climate change impacts, understanding baseflow dynamics crucial resource management. This study offers new insights by assessing controls at finer temporal scales examining their relationship with hydrological drought flows. We investigate how climatic factors influence seasonal in 7138 catchments across five...
Abstract. Climate change affects natural streamflow regimes globally. To assess alterations in regimes, typically temporal variations one or a few characteristics are taken into account. This approach, however, cannot see simultaneous changes multiple characteristics, does not utilize all the available information contained hydrograph, and describe how to what extent evolve from another. address these gaps, we conceptualize as intersecting spectrums that formed by characteristics....
Abstract Droughts exert widespread impacts on both natural and social systems, there is accumulating evidence that this situation may worsen in the context of global warming. Despite importance assessing changes droughts to understand their potential future society, studies are unevenly distributed worldwide. In study, utilizing bias-corrected CMIP6 simulations a standard precipitation-evaporation index based approach, we quantified expected drought properties across 735 Brazilian catchments...
Optimization of process variables in the oxidative coupling methane (OCM) over Mn/Na2WO4/SiO2 catalyst a fluidized bed reactor was carried out. Effects operating temperature, distribution pattern oxygen injected to and number injections on performance C2 (ethane + ethylene) yield were investigated. Process for one, two three secondary investigated obtain maximum by genetic algorithm optimization method. The selectivity 47.1% 22.87%, respectively, achieved at temperature 746.05°C. this study...
Changes in climate are altering the historical characteristics of streamflow regime and affecting performance water systems. Here, role representing natural conditions quantification system vulnerability under changing is evaluated Oldman River Basin, Canada. Four hydrological models developed using point- grid-based data considering lumped semi-distributed representations watershed. These then coupled with a reservoir allocation model. Using an ensemble model projections fed into these...
Snowmelt is a vital source of freshwater for large proportion North America’s population. Sudden snowmelt can also lead to various extreme events and environmental hazards, such as floods in the cold season droughts upcoming warmer months. However, this natural water resource at risk due climate change variability. Temperature precipitation are significant climatic controllers that regulate dynamics. Warmer temperatures affect extremes, persistence, distribution, while changing...
Hydroclimatic extremes, such as floods, present complex challenges in risk assessment due to their spatial and temporal compounding nature. This research aims to improve our understanding modelling capabilities by investigating the interactions among record length, flow regime, upper tail of floods. Our study resolves conflicting results prior studies utilizing a quasi-global peak-over-threshold (POT) analysis flood with Generalized Pareto (GP) distribution. Based on an...
Abstract Heatwaves pose significant threats to socioeconomic and environmental systems, with their intensity frequency expected increase due climate change. Despite critical impacts, future heatwaves in Brazil remain underexplored, especially from a human-perceived perspective, which is crucial for assessing potential public health impacts. Here, we propose method assess using the humidex ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>H</mml:mi>...
Abstract. Climate change significantly affects natural streamflow regime. To assess alterations in regime, typically few characteristics are considered and their significant variations time space taken as a notion of change. Although, this approach is informative, intuitively appealing widely-implemented, (1) it cannot see simultaneous changes multiple characteristics; (2) does not utilize all the available information contained hydrograph; (3) describe how to what extent one regime evolves...
&lt;p&gt;Stochastic methods for synthetic streamflow simulations have traditionally supported operational management and planning of surface water systems in both short- long-term futures. Here we focus on a particular strain stochastic generators that use copulas, generic statistical framework formulating interdependencies, to resample series at single multiple sites. Such simulators are based conditional probabilities inferred from joint between time space. We discuss the core...