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• Sorted by Date • Sorted by Last Name of First Author •
Jeffree, Jemma, Hogg, Andrew McC., Morrison, Adele K., Solodoch, Aviv, Stewart, Andrew L., and McGirr, Rebecca, 2024. GRACE Satellite Observations of Antarctic Bottom Water Transport Variability. Journal of Geophysical Research (Oceans), 129(10):e2024JC020990, doi:10.1029/2024JC020990.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2024JGRC..12920990J,
author = {{Jeffree}, Jemma and {Hogg}, Andrew McC. and {Morrison}, Adele K. and {Solodoch}, Aviv and {Stewart}, Andrew L. and {McGirr}, Rebecca},
title = "{GRACE Satellite Observations of Antarctic Bottom Water Transport Variability}",
journal = {Journal of Geophysical Research (Oceans)},
keywords = {AABW, GRACE, ocean model, meridional overturning circulation},
year = 2024,
month = oct,
volume = {129},
number = {10},
eid = {e2024JC020990},
pages = {e2024JC020990},
abstract = "{Antarctic Bottom Water (AABW) formation and transport constitute a key
component of the global ocean circulation. Direct observations
suggest that AABW volumes and transport rates may be decreasing,
but these observations are too temporally or spatially sparse to
determine the cause. To address this problem, we develop a new
method to reconstruct AABW transport variability using data from
the GRACE (Gravity Recovery and Climate Experiment) satellite
mission. We use an ocean general circulation model to
investigate the relationship between ocean bottom pressure and
AABW: we calculate both of these quantities in the model, and
link them using a regularized linear regression. Our
reconstruction from modeled ocean bottom pressure can capture
65\%-90\% of modeled AABW transport variability, depending on
the ocean basin. When realistic observational uncertainty values
are added to the modeled ocean bottom pressure, the
reconstruction can still capture 30\%-80\% of AABW transport
variability. Using the same regression values, the
reconstruction skill is within the same range in a second,
independent, general circulation model. We conclude that our
reconstruction method is not unique to the model in which it was
developed and can be applied to GRACE satellite observations of
ocean bottom pressure. These advances allow us to create the
first global reconstruction of AABW transport variability over
the satellite era. Our reconstruction provides information on
the interannual variability of AABW transport, but more accurate
observations are needed to discern AABW transport trends.}",
doi = {10.1029/2024JC020990},
adsurl = {https://ui.adsabs.harvard.edu/abs/2024JGRC..12920990J},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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