Water Sector Assumptions for the Shared Socioeconomic Pathways in an Integrated Modeling Framework

Graham, Neal T.; Davies, Evan G.  R.; Hejazi, Mohamad I.; Calvin, Katherine; Kim, Son H.; Helinski, Lauren; Miralles-Wilhelm, Fernando R.; Clarke, Leon; Kyle, Gordon Page; Patel, Pralit; Wise, Marshall A.; Vernon, Chris R.

doi:10.1029/2018WR023452

Title: Water Sector Assumptions for the Shared Socioeconomic Pathways in an Integrated Modeling Framework

Journal Article · Fri Aug 10 00:00:00 EDT 2018 · Water Resources Research

DOI:https://doi.org/10.1029/2018WR023452· OSTI ID:1561113

^[1];

^[2]; Hejazi, Mohamad I. ^[3];

^[3]; Kim, Son H. ^[4]; Helinski, Lauren ^[5]; Miralles-Wilhelm, Fernando R. ^[1]; Clarke, Leon ^[4];

^[4]; Patel, Pralit ^[4]; Wise, Marshall A. ^[4];

^[4]

Univ. of Maryland, College Park, MD (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Univ. of Alberta, Edmonton, AB (Canada)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Maryland, College Park, MD (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Univ. of Maryland, College Park, MD (United States)

Abstract The Shared Socioeconomic Pathways (SSPs) were developed without explicit assumptions for the future of the water sector; therefore, projections of future water demands based on the SSPs often lack a treatment of water technology assumptions that is consistent with the SSP storylines. This study has developed a set of qualitative and quantitative assumptions for future water sector technological advancements in the agricultural, electricity, manufacturing, and municipal sectors within the SSPs and then applied the resulting scenarios to an integrated assessment model to permit analysis of future water demand in a water‐constrained world. These scenarios are then compared to another set that excludes the adoption of water‐efficient technologies. Water demand impacts of individual SSP assumption categories are analyzed to determine scenario‐by‐scenario changes. By 2100, global annual water demands range from 3,560 to 6,600 km ³ . The results show that (1) technological change in the water sector can act to reduce water demand in a water limited world by up to 32% in 2100 in the SSP scenarios, (2) the most sustainable scenario produces end‐of‐century water withdrawals lower than 2010 values, (3) low‐income regions will likely be one of the largest drivers of future water demands and exhibit the greatest sensitivity to highly‐efficient water technologies, and (4) nonwater sector SSP assumptions have significant and differing impacts on demands across SSP scenarios that act to alter global water demands.

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Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: AC05-76RL01830

OSTI ID:: 1561113

Alternate ID(s):: OSTI ID: 1470791

Report Number(s):: PNNL-SA-126476

Journal Information:: Water Resources Research, Vol. 54, Issue 9; ISSN 0043-1397

Publisher:: American Geophysical Union (AGU)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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