A5081210529- Groundwater flow and contamination studies
- Soil and Unsaturated Flow
- Hydrology and Watershed Management Studies
- Plant Water Relations and Carbon Dynamics
- Hydraulic Fracturing and Reservoir Analysis
- Climate variability and models
- Hydrology and Drought Analysis
- Dam Engineering and Safety
- Geophysical and Geoelectrical Methods
- Landslides and related hazards
- Soil erosion and sediment transport
- Flood Risk Assessment and Management
- Coastal wetland ecosystem dynamics
- Meteorological Phenomena and Simulations
- Heat and Mass Transfer in Porous Media
- Coastal and Marine Dynamics
- Nanofluid Flow and Heat Transfer
- Soil Geostatistics and Mapping
- Aerosol Filtration and Electrostatic Precipitation
- Hydrology and Sediment Transport Processes
- Climate change impacts on agriculture
- Soil Moisture and Remote Sensing
- Enhanced Oil Recovery Techniques
- CO2 Sequestration and Geologic Interactions
- Tropical and Extratropical Cyclones Research
University of Wyoming
2016-2025
Institute of Geographic Sciences and Natural Resources Research
2025
Chinese Academy of Sciences
2025
Wyoming Department of Education
2012-2024
Desert Research Institute
2005-2012
Nevada System of Higher Education
2008-2012
Texas A&M University
2002-2004
University of Saskatchewan
2001
University of Waterloo
2000
Dalhousie University
1999
Abstract This study aimed to evaluate the performance of global climate models (GCMs) from family Coupled Model Intercomparison Project Phase 6 (CMIP6) in historical simulation precipitation and select best performing GCMs for future projection Pakistan under multiple shared socioeconomic pathways (SSPs). The spatiotemporal was evaluated against Climate Research Unit (CRU) data simulating annual during 1951–2014, using Taylor diagram interannual variability skill (IVS). Moreover, modified...
The impact of climate change on floods and droughts in Huaihe River Basin is studied using a coupled land-surface hydrology model continuous wavelet transform technique. Observed temperature the basin has increased by approximately 0.228 °C per decade since 1951. precipitation simulated observed streamflows are used to grade flood drought events. Two composite grading indices derived from three series different weight values defined for reducing uncertainties caused errors observation...
The ecosystem service value (ESV) of wetlands is a major concern in ecological research. However, inland lake wetland ecosystems arid areas are easily overlooked and seldom quantitatively evaluated due to their relatively low biological production. In this study, the ESVs Ebinur Wetland Complex (EWC) Xinjiang, China, were investigated for 11 land use types based on satellite data collected 2000, 2005, 2010 2015. results show that use/cover change (LUCC) EWC has been both naturally...
The quantitative description of relationships and propagation between different forms drought at multiple spatiotemporal scales in various geographical locations is informative for early warning systems. This study intends to evaluate the historical hydrometeorological from 1984–2015 Soan River Basin, which a critical water source Pothwar region Pakistan. reconnaissance index (RDI) standardized runoff (SRI) are used characterize meteorological hydrological droughts, respectively. variations...
Global climate change has led to an increasing frequency and intensity of extreme climates (e.g., temperature precipitation), its impact on land surface phenology (LSP) attracted attention. This study evaluated the effects in Central Asia (CA) based 13 indices (ECIs). The results showed that start season (SOS) LSP was gradually delayed, end (EOS) advanced, length growing (LOS) shortened. Most ECIs varying degrees trend, except cold cool days (TX10p) nights (TN10p) precipitation max one-day...
For meso‐ or regional‐scale Soil–Vegetation–Atmosphere Transfer (SVAT) schemes in hydroclimatic models, pixel dimensions may range from several hundred square meters to kilometers. Pixel‐scale soil hydraulic parameters and their accuracy are critical for the success of hydrologic models. This study tries answer a major question: What will be effective average properties entire (or footprint remote sensor) consisting textures if can estimated each individual texture? In this study, we...
With the advent of advanced geographical informational systems (GIS) and remote sensing technologies in recent years, topographic (elevation, slope, aspect, flow accumulation) vegetation attributes are routinely available from digital elevation models (DEMs) normalized difference index (NDVI) at different spatial (remote sensor footprint, watershed, regional) scales. Based on correlation soil distribution growth patterns across a topographically heterogeneous landscape, this study explores...
Abstract In this study, the authors investigate effective soil hydraulic parameter averaging schemes for steady-state flow in heterogeneous shallow subsurfaces useful to land–atmosphere interaction modeling. “Effective” parameters of subsurface are obtained by conceptualizing as an equivalent homogeneous medium. It requires that discharges same mean surface moisture flux (evaporation or infiltration) media. Using simple Gardner unsaturated conductivity function, derive value saturated Ks...
Abstract We have developed an alternative to the one‐dimensional partial differential equation (PDE) attributed Richards (1931) that describes unsaturated porous media flow in homogeneous soil layers. Our solution is a set of three ordinary equations (ODEs) derived from flux and mass conservation principles. used hodograph transformation, Method Lines, finite water‐content discretization produce ODEs accurately simulate infiltration, falling slugs, groundwater table dynamic effects on vadose...
Abstract Preferential flow paths (PFPs) affect the hydrological response of humid tropical catchments but have not received sufficient attention. We consider PFPs created by tree roots and earthworms in a near‐surface soil layer steep, humid, lowland hypothesize that observed behaviors can be better captured reasonably considering this layer. test hypothesis evaluating performance four different physically based distributed model structures without with configurations. Model are tested both...