Mon Feb 16, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Ditmar, Pavel, 2026. Estimation of regional ice mass trends in Greenland using a global inversion of level–2 satellite gravimetry data. Journal of Geodesy, 100(1):7, doi:10.1007/s00190-025-02028-3.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026JGeod.100....7D,
author = {{Ditmar}, Pavel},
title = "{Estimation of regional ice mass trends in Greenland using a global inversion of level-2 satellite gravimetry data}",
journal = {Journal of Geodesy},
keywords = {GRACE, GFO, Spherical harmonic coefficients, Stokes coefficients, Tikhonov regularization, Ice mass balance},
year = 2026,
month = jan,
volume = {100},
number = {1},
eid = {7},
pages = {7},
abstract = "{A methodology has been developed for an accurate estimation of mass
anomalies in the Earth system using level-2 data products from
satellite gravimetry GRACE and GRACE Follow-On (GFO) missions.
Its key elements are: (i) direct inversion of Spherical Harmonic
Coefficients (SHCs){\textemdash}or SHC trends{\textemdash}into a
global distribution of mass anomalies (or their trends); (ii)
Spatially-varying regularization that takes into account
available information about the behavior of mass anomalies; and
(iii) rigorous optimization of the data processing consistently
with the target estimates. The methodology is applied to
quantify the mass balance of the Greenland Ice Sheet and its
individual Drainage Systems (DSs) in Apr. 2002─Aug. 2023 on the
basis of GRACE/GFO monthly solutions from the Institute of
Geodesy at Graz University of Technology (ITSG). It is found
that the rate of the total mass loss in Greenland was
271{\ensuremath{\pm}}10 Gt/yr. It varied between
19{\ensuremath{\pm}}4 Gt/yr in northeast DS and
77{\ensuremath{\pm}}7 Gt/yr in southeast DS. In average, the
mass balance of individual DSs is estimated with an accuracy
better than 5 Gt/yr. As a consequence, the obtained estimates
show a sufficiently high signal-to-noise ratio (between 5 in the
northeast DS and 42 in the northwest DS). This opens the door,
among other, for using GRACE/GFO data for a comparison,
validation, and calibration of physical models describing mass
changes in Greenland, including its surface mass balance, at the
scale of individual DSs.}",
doi = {10.1007/s00190-025-02028-3},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026JGeod.100....7D},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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