Fri Apr 10, F. Flechtner
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Wolkeba, Fitsume T., Mekonnen, Mesfin M., and Brauman, Kate A., 2026. Water scarcity indicator based on GRACE derived total water storage for fast water scarcity monitoring. Journal of Hydrology, 671:135280, doi:10.1016/j.jhydrol.2026.135280.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026JHyd..67135280W,
author = {{Wolkeba}, Fitsume T. and {Mekonnen}, Mesfin M. and {Brauman}, Kate A.},
title = "{Water scarcity indicator based on GRACE derived total water storage for fast water scarcity monitoring}",
journal = {Journal of Hydrology},
keywords = {Water scarcity, Remote sensing, GRACE, Global hydrological model, Water availability},
year = 2026,
month = may,
volume = {671},
eid = {135280},
pages = {135280},
abstract = "{Robust indicators of water scarcity, which affects billions of people
worldwide, are critical for management. This study introduces a
novel water scarcity indicator based on remote sensing data,
total water storage anomaly from the Gravity Recovery and
Climate Experiment (GRACE). The proposed indicator provides a
robust alternative to traditional blue-green water scarcity
assessments derived from global hydrological models (GHMs),
which are data-intensive to calculate and have substantial
uncertainty. It demonstrates strong alignment, both at grid and
basin scales, with seven established blue water scarcity
indicators. The new indicator shows no statistically significant
difference in estimating population (grid and basin MARE of
1.4\% and 2.3\%, respectively) and land areas (grid MARE and F1
score of 1.9\% and 0.66, respectively, and agreement on 53\% of
basins) under water scarcity when compared to a blue water
scarcity indicator that allocate 80\% of natural flow for
environmental requirements. By introducing a streamlined, remote
sensing-based metric that performs comparably to complex Global
Hydrological Models (GHMs), this research enables more efficient
and accessible global water scarcity assessments. A key
advantage of this approach is its holistic integration of all
water storage compartments, particularly soil moisture, into the
total availability calculation, offering a more comprehensive
view of the hydrological resources.}",
doi = {10.1016/j.jhydrol.2026.135280},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026JHyd..67135280W},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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