Perfluoroalkyl substances (PFAS) in river and ground/drinking water of the Ganges River basin: Emissions and implications for human exposure

Environmental Pollution, Journal Year: 2015, Volume and Issue: 208, P. 704 - 713

Published: Nov. 10, 2015

Language: Английский

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Impacts of climate change and socio-economic scenarios on flow and water quality of the Ganges, Brahmaputra and Meghna (GBM) river systems: low flow and flood statistics

Environmental Science Processes & Impacts, Journal Year: 2015, Volume and Issue: 17(6), P. 1057 - 1069

Published: Jan. 1, 2015

The potential impacts of climate change and socio-economic on flow water quality in rivers worldwide is a key area interest.

Language: Английский

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Applying the global RCP–SSP–SPA scenario framework at sub-national scale: A multi-scale and participatory scenario approach

The Science of The Total Environment, Journal Year: 2018, Volume and Issue: 635, P. 659 - 672

Published: April 24, 2018

To better anticipate potential impacts of climate change, diverse information about the future is required, including climate, society and economy, adaptation mitigation. address this need, a global RCP (Representative Concentration Pathways), SSP (Shared Socio-economic SPA Policy Assumptions) (RCP-SSP-SPA) scenario framework has been developed by Intergovernmental Panel on Climate Change Fifth Assessment Report (IPCC-AR5). Application full at sub-national scales introduces two key challenges: added complexity in capturing multiple dimensions issues scale. Perhaps for reason, there are few such applications new framework. Here, we present an integrated multi-scale hybrid approach that combines both expert-based participatory methods. The applied within DECCMA1 project with purpose exploring migration three deltas across West Africa South Asia: (i) Volta delta (Ghana), (ii) Mahanadi (India), (iii) Ganges-Brahmaputra-Meghna (GBM) (Bangladesh/India). Using encompasses wide range (RCP8.5) combined SSP-based socio-economic scenarios (SSP2, SSP3, SSP5), generate highly divergent challenging contexts against which robustness human natural systems tested. In addition, consider four distinct policy trajectories: Minimum intervention, Economic capacity expansion, System efficiency enhancement, restructuring, describe alternative bundles actions/measures under different trajectories. paper highlights importance (combined top-down bottom-up) (joint expert-stakeholder) methods addressing uncertainty decision-making. facilitates improved assessments plausible choices (including migration) uncertain changing conditions. concept, methods, processes presented transferable to other socio-ecological settings challenges.

Language: Английский

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Temperature and precipitation projections over Bangladesh and the upstream Ganges, Brahmaputra and Meghna systems

Environmental Science Processes & Impacts, Journal Year: 2015, Volume and Issue: 17(6), P. 1047 - 1056

Published: Jan. 1, 2015

South Asia is a region of complex atmospheric dynamics and therefore changes resulting from increasing greenhouse gas concentrations, combined with existing vulnerability to extreme weather events such as flooding, could put the at particular risk climate change. However, current projections for show range uncertainty, particularly in terms variability extremes precipitation. Focusing on Bangladesh encompassing parts Ganges, Brahmaputra Meghna river basins, we aim explore quantify model uncertainty change 21(st) century. We use results 17-member perturbed physics ensemble global which have been used drive higher resolution (25 km) regional over south 1971 2099. The temperature precipitation responses across are assessed including representation annual cycle, trends, extremes. 17 members consistently simulate mean temperatures by 2100 compared present day, ranging between 2.6 °C 4.8 °C. Additionally, all indicate around 8% 28%, though interdecadal one member showing slight decrease mid-century period. frequency light projected future, but an increase heavy events. Three ensemble, representing outcomes, selected further impacts modelling region.

Language: Английский

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Integrated assessment of social and environmental sustainability dynamics in the Ganges-Brahmaputra-Meghna delta, Bangladesh

Estuarine Coastal and Shelf Science, Journal Year: 2016, Volume and Issue: 183, P. 370 - 381

Published: Sept. 13, 2016

Language: Английский

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Regional scale hydrologic modeling for prediction of water balance, analysis of trends in streamflow and variations in streamflow: The case study of the Ganga River basin

Journal of Hydrology Regional Studies, Journal Year: 2018, Volume and Issue: 16, P. 32 - 53

Published: March 18, 2018

Ganga River basin. The availability of freshwater has been recognized as a global issue, and the reliable evaluation quantification it within basin is necessary to bolster sustainable management water. For this purpose basin-scale SWAT model developed. Model validation showed that simulated results were consistent with observed data in reproducing seasonal dynamics surface water suggest capable hydrological features including snow melt. However, there are large variations both temporal spatial distribution components. Statistical methods have used for detecting trends critical changes streamflow. It found although streamflow from fed areas increased, stream flow lower reaches non-perennial tributaries declined significantly. This decline can be attributed anthropogenic exogenous changes. study also establishes substantial reduction overall resources respect Virgin. information sets yardstick restoration environmental health lead better under scarcity.

Language: Английский

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A review of the effects of climate change on riverine flooding in subtropical and tropical regions

Journal of Water and Climate Change, Journal Year: 2019, Volume and Issue: 10(4), P. 687 - 707

Published: Aug. 26, 2019

Abstract Tropical and subtropical regions can be particularly severely affected by flooding. Climate change is expected to lead more intense precipitation in many of the world, increasing frequency magnitude flood events. This paper presents a review studies assessing impacts climate on riverine flooding world's tropical regions. A systematic quantitative approach was used evaluate literature. The majority reported increases under change, with most consistent predicted for South Asia, East western Amazon. Results were varied Latin America Africa where there notable paucity studies. Our points need further these as well Australia, small mid-sized catchments, rapidly urbanising catchments developing world. Adoption non-stationary analysis techniques improved site-specific socio-economic environmental model scenarios identified important future directions research. Data accessibility mitigation uncertainty recognised principal issues faced researchers investigating rivers.

Language: Английский

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Impacts and responses to environmental change in coastal livelihoods of south-west Bangladesh

The Science of The Total Environment, Journal Year: 2018, Volume and Issue: 637-638, P. 954 - 970

Published: May 12, 2018

Language: Английский

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Potential Impacts of Climate and Land Use Change on the Water Quality of Ganga River around the Industrialized Kanpur Region

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: June 4, 2020

Abstract The heavily industrialised Kanpur region is the most polluted stretch of Ganga river because excessive pollutant discharge from industries. Agricultural runoff along with climate change further adds to pollution risk in this Ganga. In paper, we analyse potential impacts and land use on water quality under hypothetical scenarios using model, QUAL2K. Water indicators Dissolved Oxygen (DO), Biochemical Demand, ammonia, nitrate, total nitrogen, organic-, inorganic- phosphorous faecal coliform are assessed for eight six cover scenarios. Eutrophic conditions observed all scenarios, implying severe aquatic life. DO identified as sensitive indicator considered, while nutrients more Increase agricultural area leads larger nutrient concentration increase built-up causes an concentration. Results study could provide valuable guidance improving Ganges future

Language: Английский

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Message in a bottle: Open source technology to track the movement of plastic pollution

PLoS ONE, Journal Year: 2020, Volume and Issue: 15(12), P. e0242459 - e0242459

Published: Dec. 2, 2020

Rivers worldwide are now acting as major transport pathways for plastic pollution and discharge large quantities of waste into the ocean. Previous oceanographic modelling current drifter data have been used to predict movement accumulation in marine environment, but our understanding fate through riparian systems is still largely unknown. Here we undertook a proof concept study by applying open source tracking technology (both GPS (Global Positing System) cellular networks satellite technology), which successfully many animal studies, track movements individual litter items (500 ml PET (polyethylene terephthalate) drinks bottles) Ganges River system (known Ganga India Padma Meghna Bangladesh, hereafter known Ganges) Bay Bengal. Deployed tags were tracked river Bengal system. The “bottle tags” designed built (e.g. shape, size, buoyancy) replicate true patterns bottle. maximum distance date 2845 km over period 94 days. We discuss lessons learnt from development these tags, outline how potential widespread use this has ability significantly increase location areas timing inputs aquatic Furthermore, may act powerful tool stimulating social behaviour change, informing science-based policy, valuable educational outreach tools public awareness.

Language: Английский

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