Articles | Volume 22, issue 9
https://doi.org/10.5194/hess-22-4959-2018
https://doi.org/10.5194/hess-22-4959-2018
Research article
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27 Sep 2018
Research article | Highlight paper |  | 27 Sep 2018

Global 5 km resolution estimates of secondary evaporation including irrigation through satellite data assimilation

Albert I. J. M. van Dijk, Jaap Schellekens, Marta Yebra, Hylke E. Beck, Luigi J. Renzullo, Albrecht Weerts, and Gennadii Donchyts

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (19 May 2018) by Micha Werner
AR by Albert van Dijk on behalf of the Authors (13 Jun 2018)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (20 Jun 2018) by Micha Werner
RR by Anonymous Referee #2 (25 Jul 2018)
RR by Anonymous Referee #1 (13 Aug 2018)
ED: Publish as is (20 Aug 2018) by Micha Werner
AR by Albert van Dijk on behalf of the Authors (29 Aug 2018)
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Short summary
Evaporation from wetlands, lakes and irrigation areas needs to be measured to understand water scarcity. So far, this has only been possible for small regions. Here, we develop a solution that can be applied at a very high resolution globally by making use of satellite observations. Our results show that 16% of global water resources evaporate before reaching the ocean, mostly from surface water. Irrigation water use is less than 1% globally but is a very large water user in several dry basins.