Mon Aug 24, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Ponte, Rui M., Silva, E. Nishchitha S., Wang, Ou, Fukumori, Ichiro, and Zhao, Mengnan, 2026. Improving ocean bottom pressure fields using space gravity data in state estimation. Ocean Science, 22(4):2179–2196, doi:10.5194/os-22-2179-2026.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026OcSci..22.2179P,
author = {{Ponte}, Rui M. and {Silva}, E. Nishchitha S. and {Wang}, Ou and {Fukumori}, Ichiro and {Zhao}, Mengnan},
title = "{Improving ocean bottom pressure fields using space gravity data in state estimation}",
journal = {Ocean Science},
year = 2026,
month = jul,
volume = {22},
number = {4},
pages = {2179-2196},
abstract = "{Ocean bottom pressure (pb) is critical for monitoring and understanding
ocean variability, yet global observations from GRACE and GRACE
Follow-On suffer from limited spatiotemporal coverage. State
estimation methods allow for the dynamical interpolation of
sparse data by optimally combining observations with models.
Here we examine the effects of assimilating GRACE data (local pb
anomalies and global mean), along with other datasets, on state
estimates produced by the project for Estimating the Circulation
and Climate of the Ocean (ECCO). The ECCO optimization leads to
large adjustments in pb fields at monthly and longer timescales.
A substantial part of those adjustments is directly induced by
GRACE constraints, with largest impacts occurring at high
latitudes. Additionally, the mean ocean mass constraint is
essential for mitigating large imbalances in freshwater fluxes
derived from atmospheric reanalyses (used as prior forcing) and
for producing a realistic barystatic sea level curve.
Interpretation of remaining ECCO and GRACE differences
highlights issues with non-oceanographic data signals. Our
findings indicate that GRACE data contain information
complementary to that available in other datasets, quantifying
their value for determining pb and associated circulation
fields.}",
doi = {10.5194/os-22-2179-2026},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026OcSci..22.2179P},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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