scholarly journals Air pollution over the Ganges basin and northwest Bay of Bengal in the early postmonsoon season based on NASA MERRAero data

2014 ◽  
Vol 119 (3) ◽  
pp. 1555-1570 ◽  
Author(s):  
Pavel Kishcha ◽  
Arlindo M. da Silva ◽  
Boris Starobinets ◽  
Pinhas Alpert
Keyword(s):  
Air Pollution ◽  
Bay Of Bengal ◽  
Ganges Basin ◽  
The Ganges

Groundwater quality concern for wider adaptability of novel modes of managed aquifer recharge (MAR) in the Ganges Basin, India

2021 ◽  
Vol 246 ◽  
pp. 106659
Author(s):  
Sunil Kumar Jha ◽  
Vinay Kumar Mishra ◽  
Chhedi Lal Verma ◽  
Navneet Sharma ◽  
Alok Kumar Sikka ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
Ganges Basin ◽  
The Ganges

Opportunities for harnessing the increased contribution of glacier and snowmelt flows in the Ganges basin

Water Policy ◽  
2013 ◽  
Vol 15 (S1) ◽  
pp. 9-25 ◽  
Author(s):  
Bharat R. Sharma ◽  
Devaraj de Condappa
Keyword(s):  
Climate Change ◽  
Aquifer Recharge ◽  
Eastern India ◽  
Ganges Basin ◽  
Additional Water ◽  
Set Up ◽  
Tehri Dam ◽  
The Ganges ◽  
The Impact ◽  
The Himalaya

The topography of the Ganges basin is highly variable, with the steep mountainous region of the Himalaya upstream and the large fertile plains in eastern India and Bangladesh downstream. The contribution from the glaciers to streamflows is supposed to be significant but there is uncertainty surrounding the impact of climate change on glaciers. An application of the Water Evaluation and Planning model was set up which contained an experimental glaciers module. The model also examined the possible impacts of an increase in temperature. The contribution from glaciated areas is significant (60–75%) in the Upper Ganges but reduces downstream, falling to about 19% at Farakka. Climate change-induced rise in temperature logically increases the quantity of snow and ice that melts in glaciated areas. However, this impact decreases from upstream (+8% to +26% at Tehri dam) to downstream (+1% to +4% at Farakka). Such increases in streamflows may create flood events more frequently, or of higher magnitude, in the upper reaches. Potential strategies to exploit this additional water may include the construction of new dams/reservoir storage and the development of groundwater in the basin through managed aquifer recharge. The riparian states of India, Nepal and Bangladesh could harness this opportunity to alleviate physical water scarcity and improve productivity.

scholarly journals Are General Circulation Models Ready for Operational Streamflow Forecasting for Water Management in the Ganges and Brahmaputra River Basins?

2015 ◽  
Vol 17 (1) ◽  
pp. 195-210 ◽  
Author(s):  
Safat Sikder ◽  
Xiaodong Chen ◽  
Faisal Hossain ◽  
Jason B. Roberts ◽  
Franklin Robertson ◽  
...  
Keyword(s):  
Water Management ◽  
River Basins ◽  
Hydrologic Model ◽  
Streamflow Forecasting ◽  
Management Decisions ◽  
Brahmaputra River ◽  
Ganges Basin ◽  
Monthly Scale ◽  
Brahmaputra Basin ◽  
The Ganges

Abstract This study asks the question of whether GCMs are ready to be operationalized for streamflow forecasting in South Asian river basins, and if so, at what temporal scales and for which water management decisions are they likely to be relevant? The authors focused on the Ganges, Brahmaputra, and Meghna basins for which there is a gridded hydrologic model calibrated for the 2002–10 period. The North American Multimodel Ensemble (NMME) suite of eight GCM hindcasts was applied to generate precipitation forecasts for each month of the 1982–2012 (30 year) period at up to 6 months of lead time, which were then downscaled according to the bias-corrected statistical downscaling (BCSD) procedure to daily time steps. A global retrospective forcing dataset was used for this downscaling procedure. The study clearly revealed that a regionally consistent forcing for BCSD, which is currently unavailable for the region, is one of the primary conditions to realize reasonable skill in streamflow forecasting. In terms of relative RMSE (normalized by reference flow obtained from the global retrospective forcings used in downscaling), streamflow forecast uncertainty (RMSE) was found to be 38%–50% at monthly scale and 22%–35% at seasonal (3 monthly) scale. The Ganges River (regulated) experienced higher uncertainty than the Brahmaputra River (unregulated). In terms of anomaly correlation coefficient (ACC), the streamflow forecasting at seasonal (3 monthly) scale was found to have less uncertainty (>0.3) than at monthly scale (<0.25). The forecast skill in the Brahmaputra basin showed more improvement when the time horizon was aggregated from monthly to seasonal than the Ganges basin. Finally, the skill assessment for the individual seasons revealed that the flow forecasting using NMME data had less uncertainty during monsoon season (July–September) in the Brahmaputra basin and in postmonsoon season (October–December) in the Ganges basin. Overall, the study indicated that GCMs can have value for management decisions only at seasonal or annual water balance applications at best if appropriate historical forcings are used in downscaling. The take-home message of this study is that GCMs are not yet ready for prime-time operationalization for a wide variety of multiscale water management decisions for the Ganges and Brahmaputra River basins.

Beyond Barrages and Boundaries

2012 ◽  
Author(s):  
Cheryl Colopy
Keyword(s):  
River System ◽  
The United States ◽  
The West ◽  
Ganges Basin ◽  
The World ◽  
Transboundary Water Management ◽  
The Right ◽  
International Border ◽  
The Ganges ◽  
Eastern Edge

A low dam girdles the Ganga about sixty miles beyond Bhagalpur. More than a mile and a half across, the structure is the longest barrage in the world. It has 109 gates, almost twice as many as the Koshi barrage I traveled over near the Nepal-India border. Its name, Farakka, is anathema to people throughout Bangladesh. In India mainly fishermen on the Ganga know much about it. The barrage, which sits just eleven miles from the international border that separates the tiny nation from its big neighbor, has poisoned relations between the two governments for forty years. The story of Farakka is one of the thorniest river disputes on the subcontinent. Whole books have been written about it on both sides of the border as well as by international commentators, not to mention the technical treatises it has engendered. The barrage did not accomplish the task for which it was built and has harmed people in both India and Bangladesh. Farakka offers a warning about how not to handle transboundary rivers to prevent complex subcontinental watersharing problems from becoming crises in the future. Borders fragment the river system in the Ganges basin, creating unique transboundary water management challenges. To visualize the Indian subcontinent’s river-sharing problems, imagine a slice of pizza. Take a bite out of the middle of the bumpy top crust. That’s Nepal. Then take a small bite out of the right, or eastern edge, just below the crust. That’s Bangladesh. The rest of the slice is India. These three nations share the greater Ganges basin. The river spills into the Bay of Bengal in Bangladesh after flowing across the wide top part of India. Many of the river’s major tributaries come from Nepal. The smaller slice of pizza to the west would include Pakistan and the Indus River, but that’s another complicated story. Now move the piece of pizza to North America and pretend the United States is the majority of the slice.

Prehistoric Copper Hoards in the Ganges Basin

Antiquity ◽  
1944 ◽  
Vol 18 (72) ◽  
pp. 173-182 ◽  
Author(s):  
Stuart Piggott
Keyword(s):  
Ganges Basin ◽  
The Ganges

scholarly journals Observed changes in ocean acidity and carbon dioxide exchange in the coastal Bay of Bengal – a link to air pollution

Tellus B ◽  
2015 ◽  
Vol 67 (1) ◽  
pp. 24638 ◽  
Author(s):  
V.V.S.S. Sarma ◽  
M.S. Krishna ◽  
Y.S. Paul ◽  
V.S.N. Murty
Keyword(s):  
Carbon Dioxide ◽  
Air Pollution ◽  
Bay Of Bengal ◽  
Carbon Dioxide Exchange ◽  
Coastal Bay
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