Thu Oct 08, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Tang, Miao, Han, Shin–Chan, Yeo, In–Young, Khaki, Mehdi, Papanikolaou, Thomas Loudis, and Yang, Xinghai, 2026. Global satellite gravity data products for prompt detection of short–term Mass Change (MC). Earth System Science Data, 18(9):6589–6611, doi:10.5194/essd-18-6589-2026.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026ESSD...18.6589T,
author = {{Tang}, Miao and {Han}, Shin-Chan and {Yeo}, In-Young and {Khaki}, Mehdi and {Papanikolaou}, Thomas Loudis and {Yang}, Xinghai},
title = "{Global satellite gravity data products for prompt detection of short-term Mass Change (MC)}",
journal = {Earth System Science Data},
year = 2026,
month = sep,
volume = {18},
number = {9},
pages = {6589-6611},
abstract = "{We present the globally available dataset of Line-of-sight Gravity
Differences (LGD) as a new data product to fill the long-
standing gap of investigating sub-monthly surface mass change
from the satellite gravimetry along-track perspective. The
dataset is generated directly from Gravity Recovery and Climate
Experiment Follow-on (GRACE-FO) Level-1B intersatellite ranging
observations, positioned conceptually between Level-1B
measurements and Level-2 monthly gravity field solutions.
Provided as along-track time series, LGD delivers instantaneous
gravity change at satellite altitude, thus ensuring the fidelity
of measurements by avoiding the complex preprocessing,
regularization, and filtering applied to monthly products. The
instantaneous LGD measurements enable monitoring of sub-monthly
terrestrial water storage variability and provide accurate
information on timing and magnitude of water mass changes.
GRACE-FO's ground track allows LGD retrievals every 5--6 d in
most low and mid latitude regions, while the revisit interval
becomes shorter toward higher latitudes. Our LGD data products
also contain climatology in the form of along-track gravity
variations. We demonstrate its potential through case studies,
including along-track diagnosis of flash drought evolution in
the southeastern United States and the characterization of sub-
monthly hydrological extremes in global hotspots. Results show
that the LGD dataset has the potential to resolve the critical
timing (e.g., onset and peak) of hydrological extremes, which is
unattainable from monthly products. The LGD dataset is available
at 10.5281/zenodo.17766177 (Tang et al., 2025a), which is
expected to pave the way for advances in sub-monthly
hydrological monitoring and can serve as a unique constraint for
hydrological and geophysical models, opening new opportunities
for Earth system sciences.}",
doi = {10.5194/essd-18-6589-2026},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026ESSD...18.6589T},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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