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Title: Balancing global water availability and use at basin scale in an integrated assessment model

Abstract

Water is essential for the world’s food supply, for energy production, including bioenergy and hydroelectric power, and for power system cooling. Water is already scarce in many regions of the world and could present a critical constraint as society attempts simultaneously to mitigate climate forcing and adapt to climate change, and to provide for a larger and more prosperous human population. Numerous studies have pointed to growing pressures on the world’s scarce fresh water resources from population and economic growth, and climate change. This study goes further. We use the Global Change Assessment Model to analyze interactions between population, economic growth, energy, land and water resources simultaneously in a dynamically evolving system where competing claims on water resources from all claimants—energy, land, and economy—are reconciled with water resource availability—from renewable water, non-renewable groundwater sources and desalinated water—across 14 geopolitical regions, 151 agriculture-ecological zones, and 235 major river basins. We find that previous estimates of global water withdrawal projections are overestimated. Model simulations show that it is more economical in some basins to alter agricultural and energy activities rather than utilize non-renewable groundwater or desalinated water. This study highlights the importance of accounting for water as a binding factor in agriculture,more » energy and land use decisions in IAMs and implications for global responses to water scarcity, particularly in the trade of agricultural commodities and land-use decisions.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1327112
Report Number(s):
PNNL-SA-112666
Journal ID: ISSN 0165-0009; KP1703030
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Climatic Change
Additional Journal Information:
Journal Volume: 136; Journal Issue: 2; Journal ID: ISSN 0165-0009
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
water supply; water demand; basin; scarcity; irrigation; water markets

Citation Formats

Kim, Son H., Hejazi, Mohamad, Liu, Lu, Calvin, Katherine, Clarke, Leon, Edmonds, Jae, Kyle, Page, Patel, Pralit, Wise, Marshall, and Davies, Evan. Balancing global water availability and use at basin scale in an integrated assessment model. United States: N. p., 2016. Web. doi:10.1007/s10584-016-1604-6.
Kim, Son H., Hejazi, Mohamad, Liu, Lu, Calvin, Katherine, Clarke, Leon, Edmonds, Jae, Kyle, Page, Patel, Pralit, Wise, Marshall, & Davies, Evan. Balancing global water availability and use at basin scale in an integrated assessment model. United States. doi:10.1007/s10584-016-1604-6.
Kim, Son H., Hejazi, Mohamad, Liu, Lu, Calvin, Katherine, Clarke, Leon, Edmonds, Jae, Kyle, Page, Patel, Pralit, Wise, Marshall, and Davies, Evan. Fri . "Balancing global water availability and use at basin scale in an integrated assessment model". United States. doi:10.1007/s10584-016-1604-6.
@article{osti_1327112,
title = {Balancing global water availability and use at basin scale in an integrated assessment model},
author = {Kim, Son H. and Hejazi, Mohamad and Liu, Lu and Calvin, Katherine and Clarke, Leon and Edmonds, Jae and Kyle, Page and Patel, Pralit and Wise, Marshall and Davies, Evan},
abstractNote = {Water is essential for the world’s food supply, for energy production, including bioenergy and hydroelectric power, and for power system cooling. Water is already scarce in many regions of the world and could present a critical constraint as society attempts simultaneously to mitigate climate forcing and adapt to climate change, and to provide for a larger and more prosperous human population. Numerous studies have pointed to growing pressures on the world’s scarce fresh water resources from population and economic growth, and climate change. This study goes further. We use the Global Change Assessment Model to analyze interactions between population, economic growth, energy, land and water resources simultaneously in a dynamically evolving system where competing claims on water resources from all claimants—energy, land, and economy—are reconciled with water resource availability—from renewable water, non-renewable groundwater sources and desalinated water—across 14 geopolitical regions, 151 agriculture-ecological zones, and 235 major river basins. We find that previous estimates of global water withdrawal projections are overestimated. Model simulations show that it is more economical in some basins to alter agricultural and energy activities rather than utilize non-renewable groundwater or desalinated water. This study highlights the importance of accounting for water as a binding factor in agriculture, energy and land use decisions in IAMs and implications for global responses to water scarcity, particularly in the trade of agricultural commodities and land-use decisions.},
doi = {10.1007/s10584-016-1604-6},
journal = {Climatic Change},
issn = {0165-0009},
number = 2,
volume = 136,
place = {United States},
year = {2016},
month = {1}
}

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