Water Resources

Water Resources at SEI-US
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Climate change and hydropower in the Southern African Power Pool and Zambezi River Basin: System-wide impacts and policy implications

Energy Policy, 103, April 2017, 84–97

Author(s): Spalding-Fecher, R. ; Joyce, B. ; Winkler, H.
Date: February 2017

Research Area(s): Water Resources

This paper examines climate change impact on hydropower will affect the expansion of the regional electricity system, as well as system costs and greenhouse gas emissions. The output from major Zambezi hydropower plants could decline by 10–20% under a drying climate, while wetting of the basin produces only a marginal increase. At a regional level, the increases in electricity generation costs are relatively small (less than 1% over the long term), but could reach 20–30% in the near term for hydro-dependent countries (e.g. Mozambique and Zambia). Because some hydropower could be displaced by coal, regional greenhouse gas emissions could increase by the equivalent of a large coal-fired power station.
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Water-energy nexus challenges & opportunities in the Arabian Peninsula under climate change

Poster presented at the American Geophysical Union Fall Meeting, San Francisco, 12-16 December 2016

Author(s): Flores, F. ; Yates, D. ; Galaitsi, S. ; Binnington, T. ; Dougherty, B. ; Vinnaccia, M.; Glavan, J.C.
Date: December 2016

Research Area(s): Water Resources

This conference poster presents the results of a study of the water-energy nexus in countries in the Arabian Peninsula, using a coupled WEAP-LEAP model. Demand for water in the Gulf Cooperation Council countries relies mainly on fossil groundwater resources and desalination. Satisfying water demand requires a great deal of energy, as it requires treating and moving water along the supply chain from sources, through treatment processes, and ultimately to the consumer. As part of the Abu Dhabi Global Environmental Data Initiative (AGEDI) Local, National, and Regional Climate Change Programme, a study of the water-energy nexus of the countries in the Arabian Peninsula was implemented. For water, WEAP models both water demand – and its main drivers – and water supply, simulating policies, priorities and preferences. For energy, LEAP models both energy supply and demand, and is able to capture the impacts of low-carbon development strategies. A coupled WEAP-LEAP model was then used to evaluate the future performance of the energy-water system under climate change and policy scenarios. The models examined five policy scenarios of different futures of resource management to the year 2060.


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Exploring scientific information for policy making under deep uncertainty

Environmental Modelling & Software, 86, 232-247

Author(s): Forni, L. ; Galaitsi, S. ; Mehta, V. ; Escobar, M. ; Purkey, D. ; Depsky, N.; Lima, N.A.
Date: October 2016

Research Area(s): Water Resources

This paper describes the use of a Decision Space Visualization (DSV) that condenses model results to tackle complex water management challenges. It presents tools for discussing scientific results to decision-makers in two case studies, La Paz/El Alto, Bolivia, and Yuba County, California. Visualization output from the case studies combines spatiotemporal, multivariate and multirun/multiscenario information to produce information corresponding to the objectives and uncertainties described by key actors. These tools can manage complex data and distill scientific information into accessible formats.
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Lesotho: Tackling water insecurity in a changing climate

SEI and World Bank policy brief

Author(s): Huber-Lee, A. ; Galaitsi, S. ; Davis, M. ; Wishart, M.; Emenanjo, I.
Date: September 2016

Research Area(s): Water Resources ; Adaptation & Vulnerability

This policy brief summarizes the findings of an assessment that evaluated the performance of Lesotho's water management system and explored adaptation strategies across a range of potential future climate conditions. It finds that future climate change is likely to have important implications for water security. All the climate models indicate that average mean surface temperatures will rise, but precipitation projections vary greatly. Ensuring the continued sustainable development of Lesotho's water resources requires an integrated and strategic long-term approach to water resources and climate change adaptation.
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Lesotho Water Security and Climate Change Assessment

World Bank Group working paper

Author(s): Wishart, M. ; Huber-Lee, A. ; Joyce, B. ; Galaitsi, S. ; Emenanjo, I.; Liden, R.; Heumesser, C.; Engle, N.L.; Croneborg, L.; Yates, D.; et al.
Date: August 2016

Research Area(s): Water Resources ; Climate Mitigation Policy

This working paper presents the results of an assessment of Lesotho’s water resources management system that explored adaptation strategies across a range of potential future climate conditions.
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