Transient Water Flow and Nitrate Movement Simulation in Partially Saturated Zone

Jahangeer,; Gupta, Pankaj Kumar; Yadav, Brijesh Kumar

doi:10.1061/(asce)ir.1943-4774.0001238

Cited by 20 publications

(2 citation statements)

References 21 publications

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“…Changes and variability have already been observed and associated with extreme weather events like floods, drought, and heat waves. These extreme events are becoming increasingly unpredictable and result in worsening climatic impact on socioeconomic activities (Pachauri and Meyer, 2014;JahangeerGupta and Yadav, 2017;Kumar, 2017). Furthermore, the uneven distribution of climate change and variability impacts are a specific feature in some parts of the world with significant reductions in precipitation or major alterations in the timing of future wet and dry seasons (Kumar, 2017;Kumar et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Historical and projected spatial and temporal rainfall status of Dar es Salaam, Tanzania, from 1982 to 2050

Nyembo¹,

Mwabumba

Jahangeer

et al. 2022

Front. Environ. Sci.

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Dar es Salaam, like other cities in Africa, experiences flash floods during the rainfall season that destroy infrastructure due to the overflow of rivers and blocked sewage. This study investigates the historical and future variability and changes in spatial and temporal rainfall over Dar es Salaam. Station data and Climate Hazards Group Infrared Precipitation with Stations (CHIRPS) gridded data crossing 38 years (1982–2019) were used as a baseline and the Coordinated Regional Climate Downscaling Experiment (CORDEX) dataset from 2021 to 2050 was used for projection under Representative Concentration Pathway (RCP 4.5) forcing scenarios. A trend analysis of historical data was conducted at monthly, seasonal, and annual timescales. Mann–Kendall statistical tests and Sen’s slope estimator were applied to identify the current trend direction and magnitude of changes in rainfall patterns over time. A standardized anomaly index (SAI) was also employed to detect the region’s trends in wetness and dryness. The spatial distribution of rainfall in the city was investigated using an inverse distance weighted (IDW) interpolation technique. The statistical results reveal that a non-significant trend in rainfall was observed on monthly, seasonal, and annual timescales. Generally, in the future (2021–2050), the annual cycle of rainfall shows a slight decrease in monthly rainfall, especially from January to August, and an increase from September to December compared to historical (1982–2019) rainfall, for most of studied locations. Spatially, the distribution of projected rainfall shows that the southern part of the city will experience higher rainfall than other parts. The most significant findings were a decrease in annual projected rainfall by 20%, the MAM projected rainfall season increased by 42%, and an increase of 38% of the OND-projected rainfall season. The findings of this study will be useful for the improved management and planning of the city.

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Section: Introductionmentioning

confidence: 99%

Historical and projected spatial and temporal rainfall status of Dar es Salaam, Tanzania, from 1982 to 2050

Nyembo¹,

Mwabumba

Jahangeer

et al. 2022

Front. Environ. Sci.

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“…This detachment could be from cultivated land which contained ample amounts of chemicals such as pesticides and fertilizers or from a highway construction site, which yielded 10 times more detachment than cultivated land, 200 times that of grassland, and 2,000 times that of forest land under similar conditions (Jahangeer and Kumar 2013;Liu et al 1999). When these particles were transported, they increased the sediment load that led to pollution in their respective medium (Jahangeer et al 2017;Rügner et al 2019). For example, when displaced particles were mixed in the air, they caused air pollution.…”

Section: Introductionmentioning

confidence: 99%

Sediment Outflow under Simulated Rainfall Conditions with Varying Geotechnical Properties

Joshi

Kumar

Singh

et al. 2020

J. Hazard. Toxic Radioact. Waste

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The vulnerability of soil toward erosion might be reduced by having a good vegetative cover over the soil surface, slope improvement, and improving soil properties so that it is not easily detached and transported. However, the establishment of proper vegetative cover is a long process because it takes time for seeds to germinate and attain maturity. As an alternative approach, if soil resistance was increased by increasing the shear strength of soil against erosive forces offered by eroding agents, the soil system would become capable of withstanding the detachment of its particles on the digitalcommons.unl.edu

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Spatial and Temporal Nitrate Transport in Deep Heterogeneous Vadose Zone of India’s Alluvial Plain

2018

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Transient Water Flow and Nitrate Movement Simulation in Partially Saturated Zone

Cited by 20 publications

References 21 publications

Historical and projected spatial and temporal rainfall status of Dar es Salaam, Tanzania, from 1982 to 2050

Historical and projected spatial and temporal rainfall status of Dar es Salaam, Tanzania, from 1982 to 2050

Sediment Outflow under Simulated Rainfall Conditions with Varying Geotechnical Properties

Spatial and Temporal Nitrate Transport in Deep Heterogeneous Vadose Zone of India’s Alluvial Plain

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