Mon Oct 13, F. Flechtner
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Solovey, Tatiana, Sliwinska-Bronowicz, Justyna, Janica, Rafa&lstrok, and Brzezinska, Agnieszka, 2025. Assessment of the Effectiveness of GRACE Observations in Monitoring Groundwater Storage in Poland. Water Resources Research, 61(8):e2024WR038888, doi:10.1029/2024WR038888.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025WRR....6138888S,
author = {{Solovey}, Tatiana and {{\'S}liwi{\'n}ska-Bronowicz}, Justyna and {Janica}, Rafa{\l} and {Brzezi{\'n}ska}, Agnieszka},
title = "{Assessment of the Effectiveness of GRACE Observations in Monitoring Groundwater Storage in Poland}",
journal = {Water Resources Research},
keywords = {GRACE, groundwater, terrestrial water storage},
year = 2025,
month = aug,
volume = {61},
number = {8},
eid = {e2024WR038888},
pages = {e2024WR038888},
abstract = "{The Gravity Recovery and Climate Experiment (GRACE/GRACE-FO) mission
have been providing global data on terrestrial water storage
(TWS) for over 20 years. This study aimed to assess the
effectiveness of GRACE/GRACE-FO observations for monitoring
groundwater storage (GWS) in Poland. We proposed new method for
estimating GWS by incorporating hydrodynamic zoning. Our
approach utilized hydrodynamically conditioned relationships
between in situ GWS, GRACE/GRACE-FO-derived TWS, and modeled TWS
to derive spatial patterns for the separate estimation of
satellite-based GWS within distinct hydrodynamic zones. The GWS
was evaluated by comparing it with in situ groundwater
measurements from national monitoring points. We showed that for
a proper evaluation of the satellite-based GWS using in situ
observations, it is necessary to select monitoring points that
adequately represent aquifer systems with rapid water exchange.
We analyzed the impact of measurement point location on the
agreement between satellite-based and in situ GWS, taking into
account the physiographic region, and hydrodynamic zone. We
found highest agreement between satellite-based and in situ
estimates of GWS in aquifer systems with rapid water exchange.
In discharge zones, satellite-based GWS changes aligned well
with TWS-GRACE data in terms of the amplitudes and phases of the
seasonal signal as well as for long-term trends. We demonstrated
the existence of long-term negative trends in GWS changes across
the entire country (up to ‑2.45 mm equivalent water height/year
in the southeast region of Poland). These trends have been
significantly influenced by climate change and the resulting
predominance of evapotranspiration over precipitation.}",
doi = {10.1029/2024WR038888},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025WRR....6138888S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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