Modelling spatiotemporal patterns of water quality and its impacts on aquatic ecosystem in the cold climate region of Alberta, Canada

Meshesha, Tesfa Worku; Wang, Junye

doi:10.1016/j.jhydrol.2020.124952

Cited by 32 publications

(9 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Meshesha et al 33 modified the evapotranspiration in the SWAT model to account for two-way groundwater-surface water movement in estimating the groundwater table in Lethbridge and Barons area. Meshesha et al 34 extended the hydrological model for cold climate regions in order to quantify bacterial fluxes and its effect on surface water quality, and Kim et al 35 evaluated water quality consequently effect on aquatic environment. Guzman et al 36 , Nguyen et al 37 and Ng et al 38 coupled the SWAT model with the three-dimensional groundwater flow model (MODFLOW) to represent groundwater flow.…”

Section: Introductionmentioning

confidence: 99%

Modelling groundwater quality of the Athabasca River Basin in the subarctic region using a modified SWAT model

Meshesha

Wang

Melaku

et al. 2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

Groundwater is a vital resource for human welfare. However, due to various factors, groundwater pollution is one of the main environmental concerns. Yet, it is challenging to simulate groundwater quality dynamics due to the insufficient representation of nutrient percolation processes in the soil and Water Assessment Tool model. The objectives of this study were extending the SWAT module to predict groundwater quality. The results proved a linear relationship between observed and calculated groundwater quality with coefficient of determination (R2), Nash–Sutcliffe efficiency (NSE), percent bias (PBIAS) values in the satisfied ranges. While the values of R2, NSE and PBIAS were 0.69, 0.65, and 2.68 during nitrate calibration, they were 0.85, 0.85 and 5.44, respectively during nitrate validation. Whereas the values of R2, NSE and PBIAS were 0.59, 0.37, and − 2.21 during total dissolved solid (TDS) calibration and they were 0.81, 0.80, 7.5 during the validation. The results showed that the nitrate and TDS concentrations in groundwater might change with varying surface water quality. This indicated the requirement for designing adaptive management scenarios. Hence, the extended SWAT model could be a powerful tool for future regional to global scale modelling of nutrient loads and effective surface and groundwater management.

show abstract

Section: Introductionmentioning

confidence: 99%

Modelling groundwater quality of the Athabasca River Basin in the subarctic region using a modified SWAT model

Meshesha

Wang

Melaku

et al. 2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…This can in turn contribute to decreasing frost depth and increasing the frequency of swings in FT states 13 . Such changes can result in widespread alterations in regional hydrology 14 , phenology 15 , geology 16 , water quantity, and quality 17 as well as socio-economic activities 18 . In addition, some of these alterations can create feedback effects with other elements of the environment.…”

Section: Introductionmentioning

confidence: 99%

Compound changes in temperature and snow depth lead to asymmetric and nonlinear responses in landscape freeze–thaw

Hatami

Nazemi

2022

Sci Rep

View full text Add to dashboard Cite

Cycles of freeze–thaw (FT) are among the key landscape processes in cold regions. Under current global warming, understanding the alterations in FT characteristics is of a great importance for advising land management strategies in northern latitudes. Using a generic statistical approach, we address the impacts of compound changes in air temperature and snow depth on FT responses across Québec, a Canadian province ~ 2.5 times larger than France. Our findings show significant and complex responses of landscape FT to compound changes in temperature and snow depth. We note a vivid spatial divide between northern and southern regions and point to the asymmetric and nonlinear nature of the FT response. In general, the response of FT characteristics is amplified under compound warming compared to cooling conditions. In addition, FT responses include nonlinearity, meaning that compounding changes in temperature and snow depth have more severe impacts compared to the cumulative response of each individually. These asymmetric and nonlinear responses have important implications for the future environment and socio-economic management in a thawing Québec and highlight the complexity of landscape responses to climatic changes in cold regions.

show abstract

“…The lifestyle of humans in the modern and digital era has increased the demand for textile and electronic products, leading to the development of new industries for supporting the demand. − The textile industry has been contributing to environmental pollution due to the increasing use of toxic chemicals in the processing stage, − which is of concern, especially the wastewater treatment before disposal . About 40% of the dyes used globally contain organic synthetic bound chlorine, which affects the environment by reducing oxygen concentration and preventing light at the water surface, consequently damaging the aquatic ecosystem. , This in turn cause diseases in humans, who are exposed to the organic synthetic bound chlorine through the water and contaminated food. The chlorine’s effects can vary from cough and chest pain to water retention in the lungs, , and irritation in the skin, eyes, and the respiratory system. − The increasing demand for electronic devices has consequently increased their production, which has directly led to increase in electromagnetic interference (EMI) waves. − EMI has been identified as a new type of pollution that interferes with electronic communications devices and causes threats to human health. − ,− Humans can absorb the pollution and radiation from the electromagnetic (EM) waves; therefore, scientists globally are looking for a way to efficiently shield and absorb these EM waves.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Visible-Light Absorption of Fe₂O₃ Covered by Activated Carbon for Multifunctional Purposes: Tuning the Structural, Electronic, Optical, and Magnetic Properties

et al. 2021

View full text Add to dashboard Cite

Visible-light absorption is a critical factor for photocatalyst activity and absorption of electromagnetic (EM) interference application. The band gap of Fe 2 O 3 is 2 eV, which can be increased by doping with a high-band-gap material such as carbon from activated carbon (AC) with a band gap of 4.5 eV for increased visible-light absorption. The porosity decreases from 88 to 81.6%, and the band gap increases from 2.14 to 2.64 eV by increasing the AC from 10 to 25%, respectively. The photocatalytic activity takes 120 min to produce a harmless product for 10− 20% AC, but 25% AC shows 89.5% degradation in only 90 min and the potential to attenuate the EM wave up to 99% due to the RL being below −20 dB. The secondand third-cycle degradation achieved by the composite Fe 2 O 3 −AC having 25% AC is 88.2 and 86.5% in 90 min, respectively. The pore of the surface state of AC contains a trapped charge, and interaction occurs between the charge (electron/hole) and O 2 or H 2 O to produce OH and superoxide (O 2 − ) radicals. These radicals move inside the molecule of the pollutant (methylene blue (MB)) to break up the bond, with the final products being H 2 O and CO 2 . The X-ray photoelectron (XPS) spectra show that oxygen plays a key role in the interatomic bonding with Fe, C, and MB atoms. The best absorption of EM interference is −21.43 dB, with degradation reaching 89.51% in only 90 min for 25% AC due to its higher band gap and anisotropy constant. Fe 2 O 3 −carbon is a multifunctional material for the green environment because of its electromagnetic interference absorption and photodegradation of wastewater.

show abstract

Modelling spatiotemporal patterns of water quality and its impacts on aquatic ecosystem in the cold climate region of Alberta, Canada

Cited by 32 publications

References 56 publications

Modelling groundwater quality of the Athabasca River Basin in the subarctic region using a modified SWAT model

Modelling groundwater quality of the Athabasca River Basin in the subarctic region using a modified SWAT model

Compound changes in temperature and snow depth lead to asymmetric and nonlinear responses in landscape freeze–thaw

Enhanced Visible-Light Absorption of Fe₂O₃ Covered by Activated Carbon for Multifunctional Purposes: Tuning the Structural, Electronic, Optical, and Magnetic Properties

Contact Info

Product

Resources

About

Modelling spatiotemporal patterns of water quality and its impacts on aquatic ecosystem in the cold climate region of Alberta, Canada

Cited by 32 publications

References 56 publications

Modelling groundwater quality of the Athabasca River Basin in the subarctic region using a modified SWAT model

Modelling groundwater quality of the Athabasca River Basin in the subarctic region using a modified SWAT model

Compound changes in temperature and snow depth lead to asymmetric and nonlinear responses in landscape freeze–thaw

Enhanced Visible-Light Absorption of Fe2O3 Covered by Activated Carbon for Multifunctional Purposes: Tuning the Structural, Electronic, Optical, and Magnetic Properties

Contact Info

Product

Resources

About

Enhanced Visible-Light Absorption of Fe₂O₃ Covered by Activated Carbon for Multifunctional Purposes: Tuning the Structural, Electronic, Optical, and Magnetic Properties