Global to regional scale evaluation of adaptation measures to reduce the future water gap

Menno Straatsma; Peter Droogers; Johannes Hunink; Wilbert Berendrecht; Joost Buitink; Wouter Buytaert; Derek Karssenberg; Oliver Schmitz; Edwin H. Sutanudjaja; L. P.H. van Beek; Claudia Vitolo; Marc F.P. Bierkens

doi:10.1016/j.envsoft.2019.104578

Global to regional scale evaluation of adaptation measures to reduce the future water gap

Menno Straatsma^*, Peter Droogers, Johannes Hunink, Wilbert Berendrecht, Joost Buitink, Wouter Buytaert, Derek Karssenberg, Oliver Schmitz, Edwin H. Sutanudjaja, L. P.H. van Beek, Claudia Vitolo, Marc F.P. Bierkens

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The global water gap, water demand minus water supply, is expected to increase through 2100, negatively affecting agriculture, industry and households. Adaptation measures are necessary, but projections on their effectiveness and costs are currently unavailable. Here, we present an adaptation evaluation framework aimed at closing the water gap, which is applied offline at the global scale, and made available for regional decision making as a web service. It includes climate change and socioeconomic scenarios over the 21st century as drivers for global projections of water supply and demand. The transient water gap was calculated for 1604 water provinces globally and we determined the water gap reduction that could be achieved by three increasingly involved sets of adaptation measures. The median annual adaptation costs amount to 1.4–1.6% of the GDP per affected water province. The interactive web-based simulation allows users to include information that is not available at the global scale.

Original language	English
Article number	104578
Journal	Environmental Modelling and Software
Volume	124
DOIs	https://doi.org/10.1016/j.envsoft.2019.104578
Publication status	Published - 1 Feb 2020

Funding

The authors acknowledge the ISI-MIP intercomparison project for providing the bias-corrected meteorological data of five global circulation models. This project was partly funded by EIT's Climate-KIC program: for Water2Invest, reference number APIN0027 . This study’s calculations with PCR-GLOBWB were computed on the Dutch national supercomputer Cartesius, with the support of SURFsara. The two reviewers are gratefully acknowledged their time and high-quality feedback, which significantly improved the manuscript. Author contributions: MWS, PD, RvB, MB designed the research; MWS, WBe, JB, WBu, OS, PD, DK, ES, CV, RvB implemented parts of the model code; MWS, JB, JH analyzed the data; MWS, MB, DK wrote the paper; MWS, MB, JH, JB, PD wrote the supplemental information. Appendix A

Keywords

Adaptation options
Global hydrology
Investment costs
Water allocation
Web-based simulation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.envsoft.2019.104578

Global to regional scale evaluationFinal published version, 2.25 MB

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Straatsma, M., Droogers, P., Hunink, J., Berendrecht, W., Buitink, J., Buytaert, W., Karssenberg, D., Schmitz, O., Sutanudjaja, E. H., van Beek, L. P. H., Vitolo, C., & Bierkens, M. F. P. (2020). Global to regional scale evaluation of adaptation measures to reduce the future water gap. Environmental Modelling and Software, 124, Article 104578. https://doi.org/10.1016/j.envsoft.2019.104578

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Global to regional scale evaluation of adaptation measures to reduce the future water gap

Abstract

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Keywords

UN SDGs

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