Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Xiong, Yuhao, Feng, Wei, Chen, Jianli, Shen, Yingchun, Bai, Hongbing, Jiang, Zhongshan, and Zhong, Min, 2025. Refined GRACE/GFO-Derived Terrestrial Water Storage Anomaly in Middle East Recovered by ICA-Based Forward Modeling Approach. Water Resources Research, 61(7):e2024WR039837, doi:10.1029/2024WR039837.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025WRR....6139837X,
author = {{Xiong}, Yuhao and {Feng}, Wei and {Chen}, Jianli and {Shen}, Yingchun and {Bai}, Hongbing and {Jiang}, Zhongshan and {Zhong}, Min},
title = "{Refined GRACE/GFO-Derived Terrestrial Water Storage Anomaly in Middle East Recovered by ICA-Based Forward Modeling Approach}",
journal = {Water Resources Research},
keywords = {Middle East (ME), GRACE/GFO, terrestrial water storage anomaly (TWSA), signal attenuation, leakage error, independent component analysis-based forward modeling (IFM)},
year = 2025,
month = jul,
volume = {61},
number = {7},
eid = {e2024WR039837},
pages = {e2024WR039837},
abstract = "{The Gravity Recovery and Climate Experiment (GRACE) mission and its
successor, GRACE Follow-On (GFO), effectively monitor
terrestrial water storage anomaly (TWSA). However, their
constrained spatial resolution imposes limitations, with leakage
and attenuation potentially impacting the accuracy of regional
TWSA. While GRACE/GFO observations capture the ongoing TWSA
decline in the Middle East due to excessive groundwater
extraction, the nearby Caspian Sea's long-term water loss,
combined with the seasonal signals from the coastal sea,
complicate accurate TWSA estimation through signal attenuation
and leakage. To address these issues, we propose a combined
approach, that is, independent component analysis (ICA)-based
forward modeling (IFM), to discern and isolate the leakage
effect and improve the recovery of TWSA signal. We demonstrate
the impact of signal attenuation and leakage through simulation,
and validate the effectiveness of IFM. This method is also
confirmed through steric-corrected altimetry estimates in the
Caspian Sea, Red Sea, and Persian Gulf, and further validated in
Greenland and Victoria Lake. Our results show considerable
leakage in GRACE/GFO TWSA estimates for Saudi Arabia and Iran.
Leakage from the Red Sea and Persian Gulf introduces a 28.6\%
bias in Saudi Arabia's TWSA trend, while leakage from the
Caspian Sea results in a 36.4\% bias in Iran. After IFM
recovery, the TWSA decline rates for Saudi Arabia, Iraq, and
Iran are 11.48 {\ensuremath{\pm}} 0.32, 3.56 {\ensuremath{\pm}}
0.44, and 7.75 {\ensuremath{\pm}} 0.45 km$^{3}$/yr,
respectively. This study demonstrates the effectiveness of IFM
in deriving refined TWSA signal, providing valuable insights for
water resource management in arid regions.}",
doi = {10.1029/2024WR039837},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025WRR....6139837X},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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