Articles | Volume 26, issue 4
Hydrol. Earth Syst. Sci., 26, 923–940, 2022
https://doi.org/10.5194/hess-26-923-2022
Hydrol. Earth Syst. Sci., 26, 923–940, 2022
https://doi.org/10.5194/hess-26-923-2022

Research article 18 Feb 2022

Research article | 18 Feb 2022

Historical simulation of maize water footprints with a new global gridded crop model ACEA

Oleksandr Mialyk et al.

Data sets

GGCMI Phase 3 crop calendar J. Jägermeyr, C. Müller, S. Minoli, D. Ray, and S. Siebert https://doi.org/10.5281/ZENODO.5062513

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Short summary
As the global demand for crops is increasing, it is vital to understand spatial and temporal patterns of crop water footprints (WFs). Previous studies looked into spatial patterns but not into temporal ones. Here, we present a new process-based gridded crop model to simulate WFs and apply it for maize in 1986–2016. We show that despite the average unit WF reduction (−35 %), the global WF of maize production has increased (+50 %), which might harm ecosystems and human livelihoods in some regions.