Thu Oct 08, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Li, Xiaolong, Kusche, Jürgen, Jin, Taoyong, Zhong, Yulong, and Gutknecht, Benjamin Daniel, 2026. A GRACE/–FO–Based Framework for Improved Reproduction of Water–Balance–Constrained Evapotranspiration Across Hydroclimatic Regimes. Earth and Space Science, 13(8):e2026EA005082, doi:10.1029/2026EA005082.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026ESS...1305082L,
author = {{Li}, Xiaolong and {Kusche}, J{\"u}rgen and {Jin}, Taoyong and {Zhong}, Yulong and {Gutknecht}, Benjamin Daniel},
title = "{A GRACE/-FO-Based Framework for Improved Reproduction of Water-Balance-Constrained Evapotranspiration Across Hydroclimatic Regimes}",
journal = {Earth and Space Science},
keywords = {GRACE, evapotranspiration, water budget, ENSO},
year = 2026,
month = aug,
volume = {13},
number = {8},
eid = {e2026EA005082},
pages = {e2026EA005082},
abstract = "{Diagnosing monthly evapotranspiration (ET) under water--balance
constraints is essential for understanding land--atmosphere
interactions and managing water resources under changing climate
conditions. Since 2002, the Gravity Recovery and Climate
Experiment (GRACE) and its successor GRACE Follow--On
(GRACE/--FO) missions have provided precise observations of
terrestrial water storage, enabling improved constraints on
large--scale water balance. Building on these advances, we
develop a GRACE/--FO--constrained diagnostic to framework to
reproduce monthly ET derived from water--balance
(ET$_{Budget}$). The framework that applies the one--parameter
Budyko formulation during dry (water--limited) months and the
two--parameter power--law formulation during wet (energy--
limited) months, with the aridity index distinguishing between
them. The framework is evaluated across 297 major river basins
using ET$_{Budget}$ as a reference and compared with
conventional Budyko--only approaches. Results show that,
relative to the Budyko--only approaches, the proposed framework
substantially reduces deviations from ET$_{Budget}$, especially
in 189 humid basins, while maintaining robust performance in 15
arid and 93 semi--arid regions. The proposed framework yields
mean annual ET and P--ET of 612.5 and 191.4 mm yr$^{-1}$ over
major river basins, respectively, showing no significant long--
term trends but distinct spatial patterns and contrasting
responses to the El Ni{\~n}o--Southern Oscillation phases. These
findings highlight the value of the proposed framework as a
diagnostic tool for improving the representation of monthly
water--balance ET across diverse hydroclimatic conditions.}",
doi = {10.1029/2026EA005082},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026E&SS...1305082L},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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