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Author: Ranjan Parajuli
Publisher:
ISBN:
Category : Climatology
Languages : en
Pages : 184
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Book Description
This study investigated the impact of changing climate and growing population on water supply and demand in one of the most rapidly growing cities in the semi-arid regions of western US, Las Vegas Valley (LVV), Nevada. Future scenarios of supply and demand using climate and hydrological models of Coupled Model Intercomparison Project phase 3 (CMIP3) and a more recent CMIP5 have been evaluated and a comparison of their results has been made. A system dynamics model for LVV was developed with a period of study from 1989 to 2049. For the study area, climate and hydrological data projections for the future period (2013-2049) were obtained from the outputs of 16 Global Climate Models (GCMs) of CMIP3 model ensemble with 3 emission scenarios and that from 37 GCMs of CMIP5 model ensemble with 4 Representative concentration pathways. Population growth forecast by Center for Business and Economic Research (CBER) and prevalent conservation practices by Southern Nevada Water Authority (SNWA) were used for the model. The water availability scenario in the future for LVV in the form of Lake Mead elevation was assessed and the water demand was also predicted. This study found that mean lake elevation for the future period (2013-2049) can go as low as 21.8% lesser than that for the historical period (1989-2012). 59 of 97 projections of CMIP5 models against 27 of 48 projections of CMIP3 models indicated that the future mean lake elevation would be lower than the historical mean. Demand forecasts showed Southern Nevada Water Authority conservation goal for 2035 could be met under prevalent conservation practices. This study can be very useful for the water managers and planners to predict the future water budget, plan accordingly, and make decisions to achieve water sustainability. This study has been performed as a part of the Thriving Earth Exchange (TEX) program to assess the current vulnerability of LVV to drought, and the impact on supply and demand of water resources for the future climate scenarios.
Author: Ranjan Parajuli
Publisher:
ISBN:
Category : Climatology
Languages : en
Pages : 184
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Book Description
This study investigated the impact of changing climate and growing population on water supply and demand in one of the most rapidly growing cities in the semi-arid regions of western US, Las Vegas Valley (LVV), Nevada. Future scenarios of supply and demand using climate and hydrological models of Coupled Model Intercomparison Project phase 3 (CMIP3) and a more recent CMIP5 have been evaluated and a comparison of their results has been made. A system dynamics model for LVV was developed with a period of study from 1989 to 2049. For the study area, climate and hydrological data projections for the future period (2013-2049) were obtained from the outputs of 16 Global Climate Models (GCMs) of CMIP3 model ensemble with 3 emission scenarios and that from 37 GCMs of CMIP5 model ensemble with 4 Representative concentration pathways. Population growth forecast by Center for Business and Economic Research (CBER) and prevalent conservation practices by Southern Nevada Water Authority (SNWA) were used for the model. The water availability scenario in the future for LVV in the form of Lake Mead elevation was assessed and the water demand was also predicted. This study found that mean lake elevation for the future period (2013-2049) can go as low as 21.8% lesser than that for the historical period (1989-2012). 59 of 97 projections of CMIP5 models against 27 of 48 projections of CMIP3 models indicated that the future mean lake elevation would be lower than the historical mean. Demand forecasts showed Southern Nevada Water Authority conservation goal for 2035 could be met under prevalent conservation practices. This study can be very useful for the water managers and planners to predict the future water budget, plan accordingly, and make decisions to achieve water sustainability. This study has been performed as a part of the Thriving Earth Exchange (TEX) program to assess the current vulnerability of LVV to drought, and the impact on supply and demand of water resources for the future climate scenarios.
Author: Katharina Fricke
Publisher: Springer Science & Business Media
ISBN: 3319016105
Category : Science
Languages : en
Pages : 258
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Book Description
Located in a narrow grassland corridor between the semi-desert and a mountain range in Northwest China, the research area Urumqi Region is despite its semi-arid climate in a relatively favourable hydrological situation. The nearby mountains provide water for settlements and agriculture, making human development possible in the first place. Due to the development of agriculture, population and economy during the last sixty years and the increasing water consumption, a demand- and population-driven water scarcity exists today and is expected to aggravate. At the same time, the effects of climate change and land use transformations on the hydrological system and the water availability are uncertain. This study evaluates the recent and future situation by combining a hydrological water balance model for the simulation of the water supply based on scenarios of climate and land use change with a socio-economic model for projecting the future water demand including predicted growth of population and economy.
Author: C. Fai Fung
Publisher: John Wiley & Sons
ISBN: 1444348175
Category : Science
Languages : en
Pages : 215
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Book Description
The quantitative assessment of the impact of climate change on water availability and water resources management requires knowledge of climate, hydro(geo)logical and water resources models, and particularly the relationships between each of them. This book brings together world experts on each of these aspects, distilling each complex topic into concise and easy to understand chapters, in which both the uses and limitations of modelling are explored. The book concludes with a set of case studies using real-life examples to illustrate the steps required and the problems that can be faced in assessing the potential impacts of climate change on water resource systems. For students, scientists, engineers and decision-makers alike, this book provides an invaluable and critical look at the information that is provided by climate models, and the ways it is used in modelling water systems. A key focus is the exploration of how uncertainties may accrue at each stage of an impacts assessment, and the reliability of the resulting information. The book is a practical guide to understanding the opportunities and pitfalls in the quantitative assessment of climate change impacts and adaptation in the water resource sector.
Author: R. Bruce Billings
Publisher: American Water Works Association
ISBN: 1613000707
Category : Municipal water supply
Languages : en
Pages : 367
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Book Description
Author: Trevor C. Hughes
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 58
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Book Description
Author: Elizabeth Allen
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 13
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Book Description
This publication introduces policy makers and natural resource managers to the use of scenarios in environmental modeling. Managers increasingly recognize that the climate is changing and that those changes pose a threat that must be understood in more detail and incorporated into planning decisions at all scales. High quality information about likely environmental change impacts is critically important to help decision-makers address risks in an adaptive manner. To provide concrete examples of the types of scenarios that may be considered in making management decisions, we draw from the 2016 Columbia River Basin Long-Term Water Supply and Demand Forecast, which the Washington Department of Ecology publishes every five years to assist stakeholders in planning for future water resource conditions. There are many different approaches to developing and testing scenarios to inform decision-making. When decision-makers understand how scenarios are developed and how models are run, they can better use model outputs to inform their management decisions.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309046777
Category : Science
Languages : en
Pages : 359
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Book Description
The question of whether the earth's climate is changing in some significant human-induced way remains a matter of much debate. But the fact that climate is variable over time is well known. These two elements of climatic uncertainty affect water resources planning and management in the American West. Managing Water Resources in the West Under Conditions of Climate Uncertainty examines the scientific basis for predictions of climate change, the implications of climate uncertainty for water resources management, and the management options available for responding to climate variability and potential climate change.
Author: Peter H. Raven
Publisher: John Wiley & Sons
ISBN: 0470945702
Category : Nature
Languages : en
Pages : 1166
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Book Description
"Raven's 8th edition of Environment offers more detailed content than the Visualizing text for a better understanding and integration of the core environmental systems and to view and analyze the role those systems play. Shorter, but still comprehensive coverage focuses on ethical decision making and key local environmental science issues, requiring readers to think critically about the course material outside of the classroom. Other features include brief text in the comprehensive segment; extensive chapter pedagogy to help reinforce the systems approach; more opportunities to think critically about the how systems intersect and fit together; and new data interpretation questions at the end of each chapter"--
Author: Kathleen A. Miller
Publisher: American Water Works Association
ISBN: 1583214666
Category : Business & Economics
Languages : en
Pages : 92
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Book Description
The purpose of this project was to produce a succinct, educational report (Primer) for use by the drinking water utility industry outlining the current state of scientific understanding regarding the potential impacts of global climate change on water utilities, water supply, demand, and relevant water quality. Utilizing input from industry and science participants, the report includes a summary of the relevant science that explains the linkages between climate change and the hydrologic cycle and outlines what is known and unknown about future changes in regional hydrologic conditions. The report also discusses planning and response strategies. Contains CD with the full searchable Primer, with extensive links to additional reference materials; color pages throughout.
Author: V. Gardiner
Publisher: CRC Press
ISBN: 1482275600
Category : Architecture
Languages : en
Pages : 148
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Book Description
This book is an outcome of the workshop on water demand forecasting in 1985. It summarises the 'state-of-the-art' in water demand forecasting, and identifies some of its links with environmental issues. The book discusses some of the issues raised in more detail and provides case studies.
