Global water resources affected by human interventions and climate change

Ingjerd Haddeland, Jens Heinke, Hester Biemans, Stephanie Eisner, Martina Flörke, Naota Hanasaki, Markus Konzmann, Fulco Ludwig, Yoshimitsu Masaki, Jacob Schewe, Tobias Stacke, Zachary D. Tessler, Yoshihide Wada, Dominik Wisser

Research output: Contribution to journalArticlepeer-review

931 Scopus citations

Abstract

Humans directly change the dynamics of the water cycle through dams constructed for water storage, and through water withdrawals for industrial, agricultural, or domestic purposes. Climate change is expected to additionally affect water supply and demand. Here, analyses of climate change and direct human impacts on the terrestrial water cycle are presented and compared using a multimodel approach. Seven global hydrological models have been forced with multiple climate projections, and with and without taking into account impacts of human interventions such as dams and water withdrawals on the hydrological cycle. Model results are analyzed for different levels of global warming, allowing for analyses in line with temperature targets for climate change mitigation. The results indicate that direct human impacts on the water cycle in some regions, e.g., parts of Asia and in the western United States, are of the same order of magnitude, or even exceed impacts to be expected for moderate levels of global warming (+2 K). Despite some spread in model projections, irrigation water consumption is generally projected to increase with higher global mean temperatures. Irrigation water scarcity is particularly large in parts of southern and eastern Asia, and is expected to become even larger in the future.
Original languageEnglish (US)
Pages (from-to)3251-3256
Number of pages6
JournalPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume111
Issue number9
DOIs
StatePublished - Mar 4 2014
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-18

ASJC Scopus subject areas

  • General

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