Mon Oct 13, F. Flechtner
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Shihora, Linus, Martin, Torge, Hans, Anna Christina, Hummels, Rebecca, Schindelegger, Michael, and Dobslaw, Henryk, 2025. Relating Atlantic meridional deep-water transport to ocean bottom pressure variations as a target for satellite gravimetry missions. Ocean Science, 21(4):1533–1548, doi:10.5194/os-21-1533-2025.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025OcSci..21.1533S,
author = {{Shihora}, Linus and {Martin}, Torge and {Hans}, Anna Christina and {Hummels}, Rebecca and {Schindelegger}, Michael and {Dobslaw}, Henryk},
title = "{Relating Atlantic meridional deep-water transport to ocean bottom pressure variations as a target for satellite gravimetry missions}",
journal = {Ocean Science},
year = 2025,
month = jul,
volume = {21},
number = {4},
pages = {1533-1548},
abstract = "{The Atlantic Meridional Overturning Circulation (AMOC) is a salient
feature of the climate system that is observed with respect to
its strength and variability using a wide range of offshore
installations and expensive sea-going expeditions. Satellite-
based measurements of mass changes in the Earth system, such as
from the Gravity Recovery and Climate Experiment (GRACE)
mission, may help monitor these transport variations at the
large scale, by measuring associated changes in ocean bottom
pressure (OBP) at the boundaries of the Atlantic remotely from
space. However, as these signals are mainly confined to the
continental slope and are small in magnitude, their detection
using gravimetry will likely require specialised approaches.
Here, we use the output of a fine-resolution (1/20{\textdegree})
regional ocean model to assess the connection between OBP
signals at the western boundary of the North and South Atlantic
to changes in the zonally integrated meridional deep-water
transport. We find that transport anomalies in the
{\ensuremath{\sim}} 1{\textendash}3 km depth range can be
reconstructed using OBP variations spatially averaged over the
continental slope, with correlations of 0.75 (0.72) for the
North (South) Atlantic and root-mean-square errors of
{\ensuremath{\sim}} 1 Sv (sverdrup; 106 m3s-1), on monthly to
inter-annual timescales. We further create a synthetic data set
containing OBP signals connected to meridional deep-water-
transport anomalies; these data can be included in dedicated
satellite gravimetry simulations to assess the AMOC detection
capabilities of future mission scenarios and to develop
specialised recovery strategies that are needed to track those
weak signatures in the time-variable gravity field.}",
doi = {10.5194/os-21-1533-2025},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025OcSci..21.1533S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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