Mon Dec 15, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Blank, Daniel, Eicker, Annette, Reager, John T., and Güntner, Andreas, 2025. Revisiting Sub-Surface Drought Cascades With Daily Satellite Observations of Soil Moisture and Terrestrial Water Storage. Water Resources Research, 61(8):e2024WR039321, doi:10.1029/2024WR039321.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025WRR....6139321B,
author = {{Blank}, Daniel and {Eicker}, Annette and {Reager}, John T. and {G{\"u}ntner}, Andreas},
title = "{Revisiting Sub-Surface Drought Cascades With Daily Satellite Observations of Soil Moisture and Terrestrial Water Storage}",
journal = {Water Resources Research},
keywords = {drought cascades, soil moisture, GRACE, remote sensing, water storage},
year = 2025,
month = aug,
volume = {61},
number = {8},
eid = {e2024WR039321},
pages = {e2024WR039321},
abstract = "{The increasing frequency, intensity, and duration of extreme heat and
drought events in a warming climate make it crucial to
understand the relationship between surface and subsurface water
storage dynamics during these events. Changes in water storage
can be studied globally using satellite observations. Microwave
remote sensing observes the upper few centimeters of the soil,
while satellite gravimetry detects changes in the entire column
of terrestrial water storage. We use daily data of the Gravity
Recovery and Climate Experiment (GRACE) and GRACE Follow-On
(GRACE-FO), satellite-based surface soil moisture data and root
zone products from Soil Moisture Ocean Salinity, Soil Moisture
Active Passive, and European Space Agency Climate Change
Initiative on a harmonized 1${}^{\circ}$ global grid to study
the evolution of water storage deficits across different soil
layers. The joint analysis of the three types of data provides
valuable insight into the hydrological dynamics in different
soil depths and subsurface water storage compartments. To
identify different dynamics, we compute the rate of change from
de-seasonalized water storage anomaly time series to assess how
quickly the system accumulates storage deficits during drought
conditions and recovers from them for different integration
depths in the subsurface. The results indicate characteristic
patterns of the temporal dynamics of drought recovery with fast
fluctuations and short recovery times for surface soil moisture,
a prolonged behavior in the root-zone, and an even slower
response in the entire water column. This highlights that the
cascading propagation of drought dynamics from the surface to
the subsurface can be quantified by remote sensing data with
daily resolution at the global scale.}",
doi = {10.1029/2024WR039321},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025WRR....6139321B},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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Mon Dec 15, F. Flechtner