Mon Feb 16, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Fang, Dong, Ran, Jiangjun, Han, Shin–Chan, Tangdamrongsub, Natthachet, and Yan, Zhengwen, 2026. On Optimal Parameterization for Mascon Solution of Surface Mass Changes From GRACE(–FO) Satellite Gravimetry. Earth and Space Science, 13(1):e2025EA004645, doi:10.1029/2025EA004645.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026ESS...1304645F,
author = {{Fang}, Dong and {Ran}, Jiangjun and {Han}, Shin-Chan and {Tangdamrongsub}, Natthachet and {Yan}, Zhengwen},
title = "{On Optimal Parameterization for Mascon Solution of Surface Mass Changes From GRACE(-FO) Satellite Gravimetry}",
journal = {Earth and Space Science},
keywords = {satellite gravity, time variable gravity, mascon solution, surface mass changes},
year = 2026,
month = jan,
volume = {13},
number = {1},
eid = {e2025EA004645},
pages = {e2025EA004645},
abstract = "{The Gravity Recovery and Climate Experiment (GRACE) and its successor,
GRACE-Follow On, play an important role in monitoring mass
transport across the Earth. Compared to spherical harmonic
solutions, mass concentration (mascon) solutions offer less
signal leakage and a ``higher'' spatial resolution. How the
shapes, sizes, and positions of mascon are parameterized
influences the accuracy of the solutions. In this study, we
derive a variable-sized mascon solution that enhances spatial
resolution in polar regions by considering orbital coverage of
satellites. To this end, we present a numerical simulation aimed
at evaluating the performance of different parameterizations in
the mascon solutions. We demonstrate that using variable-sized
mascons reduce parameterization error by up to 17\% and improve
goodness of fit by up to 34\%. The accuracy of signal recovery
improves by about 23\%, 34\%, and 42\% for basin scales,
respectively, in low-latitude, mid-latitude, and high-latitude
zones. When applied to the GRACE (-FO) data, we see the
optimized parameterization scheme reduces noise by up to 1.84 cm
in the surface mass change time series. Additionally, the
optimally parameterized mascon solution help to enhance signal
recovery in mid-to-high latitude regions. We discuss and
quantify benefits of variable-sized mason parameterizations for
surface mass change recovery and suggest the optimal scheme
based on the simulation and real data processing. Overall, the
optimized parameterization scheme will benefit finer-scale mass
change signal recovery for mascon solution.}",
doi = {10.1029/2025EA004645},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026E&SS...1304645F},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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Mon Feb 16, F. Flechtner