Mon Feb 16, F. Flechtner
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Meyer, Jordan S. and Chambers, Don P., 2025. Monitoring Labrador Current Transport Variability With Satellite Gravity. Journal of Geophysical Research (Oceans), 130(12):e2025JC023291, doi:10.1029/2025JC023291.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025JGRC..13023291M,
author = {{Meyer}, Jordan S. and {Chambers}, Don P.},
title = "{Monitoring Labrador Current Transport Variability With Satellite Gravity}",
journal = {Journal of Geophysical Research (Oceans)},
keywords = {Labrador current, satellite gravity, AMOC},
year = 2025,
month = dec,
volume = {130},
number = {12},
eid = {e2025JC023291},
pages = {e2025JC023291},
abstract = "{The Labrador Current is a major pathway for export of North Atlantic
Deep Water across 53{\textdegree}N. While direct measurements of
the integrated transport of the current were made from 1997 to
2014 at the 53{\textdegree}N Moored Observatory and since 2014
as part of the Overturning in the Subpolar North Atlantic
Program (OSNAP), the calculations of integrated transport are
typically delayed by years due to the time to recover and
process moored instrumentation. Here, we examine a method to
compute variations in the transport from ocean bottom pressure
gradients determined from the GRACE and GRACE-FO satellite
missions since 2002, which will allow near-real-time monitoring.
After verifying the method using an ocean state estimate that
captures the mean and variable transport similar to the
observations, we calculate the variability using the satellite
observations. While there is a notable degradation at the end of
the GRACE mission after 2012, results from 2002 to 2011 are
consistent with interannual variations seen in the
53{\textdegree}N Moored Observatory and results from the GRACE
Follow-on mission (starting in 2018) are consistent with
observations made by the OSNAP array. Monthly differences are of
the order of 3─4 Sv compared to overall variability of
{\ensuremath{\pm}}6 Sv (one standard deviation). No
statistically significant trend since 2002 was found.}",
doi = {10.1029/2025JC023291},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025JGRC..13023291M},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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