Understanding the spatial and temporal dynamics of soil water and crop water stress within a field is critical for effective Variable Rate Irrigation (VRI) management. Proper VRI can result in improved protection of the crop from early onset of crop water stress while minimizing…
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Groundwater has an important role in forging the composition of surface water, supplying nutrients crucial for the development of balanced ecosystems and potentially introducing contaminants into otherwise pristine surface water. Due to water-rock interactions, radium (Ra) in gr…
Cyclic storage of surface water and groundwater (CSSG) refers to physically integrated and operationally-interconnected surface water and groundwater subsystems with their full interactions. In such a system, surface and subsurface impoundment subsystems may be treated as compet…
The main objective of this research was to develop and utilize a coupled surface water groundwater model to simulate hydrological responses of watersheds. This was achieved by coupling the U.S. Geological Survey (USGS) groundwater flow model, MODFLOW, and the rainfall runoff mod…
Terrestrial vegetation plays a key role in land surface-atmosphere interactions as the primary link for moisture (evapotranspiration) and energy (latent) exchange. Consequently, the regional to global effects of historical and expected land use/cover changes (LUCCs) due to both …
The oceanic uptake of atmospheric CO2 is of global importance as it affects the pace of climate change. The Arctic Ocean acts as a carbon sink for atmospheric CO2, benefiting from high solubility of CO2 in cold seawater and high summer biological production. It has been known th…
Climate change is influencing the biogeochemical dynamics of lake systems in northern Canada. These changes may affect the loading and cycling of naturally occurring metal(loid)s and the long-term stability of mining-derived contaminants in sub-Arctic lakes. Arsenic (As) concent…
Knowledge of the dynamics of rivers and reservoirs is important to help manage the impacts of climate change and anthropogenic activities on water resources, which are intimately tied to human well-being, economic wealth and environmental health. However, ground-based measuremen…