Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Yuan, Ze, Chen, Xiaohong, Huang, Lie, and Ye, Changxin, 2025. A Framework for Characterization of Drought Events at the Basin Scale Based on High-Resolution Terrestrial Water Storage Reconstruction. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 18:21718–21732, doi:10.1109/JSTARS.2025.3600026.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025IJSTA..1821718Y,
author = {{Yuan}, Ze and {Chen}, Xiaohong and {Huang}, Lie and {Ye}, Changxin},
title = "{A Framework for Characterization of Drought Events at the Basin Scale Based on High-Resolution Terrestrial Water Storage Reconstruction}",
journal = {IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing},
keywords = {Downscaling, drought events, gravity recovery and climate experiment (GRACE), Pearl River basin (PRB), terrestrial water storage (TWS)},
year = 2025,
month = jan,
volume = {18},
pages = {21718-21732},
abstract = "{Terrestrial water storage anomaly (TWSA) data derived from gravity
recovery and climate experiment (GRACE) satellite measurements
are constrained by their coarse spatial resolution (3) and
limited temporal coverage (since 2002), which reduce their
applicability for identifying drought events at the basin scale
(<90 000 km$^{2}$) and analyzing long-term drought evolution. In
this study, we propose a modeling framework that accounts for
the irregular temporal intervals of GRACE data to reconstruct
TWSA data from 1961 to 2022 at a 0.25grid resolution for the
construction of a high-resolution drought severity index (HRDSI)
to assess drought processes at the watershed scale. Application
in the Pearl River basin (PRB) of China shows that the HRDSI not
only effectively captures the evolution of major drought events
but also evaluates the trend of drought characteristics under
climate change. Since 2002, the severity of droughts in the PRB
has not significantly increased compared to the two previous
periods (19611981 and 19822001), with average drought severity
indices of 1.54, 1.48, and 1.52, respectively. However, drought
events have become more frequent, occurring four, four, and
eight times during the three periods, respectively. In addition,
drought recovery periods have become longer, with average
recovery rates of 0.75, 0.71, and 0.66 cm/month. Although the
HRDSI is similar to the Palmer Drought Severity Index, it offers
potential advantages in identifying short-term droughts and
those influenced by high-intensity human activities. The TWSA
reconstruction method proposed in this study is also applicable
for drought assessment in other watersheds.}",
doi = {10.1109/JSTARS.2025.3600026},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025IJSTA..1821718Y},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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Mon Oct 13, F. Flechtner