Articles | Volume 22, issue 9
Hydrol. Earth Syst. Sci., 22, 4959–4980, 2018
https://doi.org/10.5194/hess-22-4959-2018

Special issue: Integration of Earth observations and models for global water...

Hydrol. Earth Syst. Sci., 22, 4959–4980, 2018
https://doi.org/10.5194/hess-22-4959-2018

Research article 27 Sep 2018

Research article | 27 Sep 2018

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

Albert I. J. M. van Dijk et al.

Data sets

ANU Water and Landscape Dynamics - Global data Albert Van Dijk https://doi.org/10.4225/41/5934fbef70319

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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.