Mon Oct 13, F. Flechtner
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Zhang, Yang, Liang, Xinfeng, Chambers, Don P., and Huang, Minghai, 2025. Assessing Deep and Abyssal Ocean Heat Content Changes With a Dynamically Consistent Ocean State Estimate. Journal of Geophysical Research (Oceans), 130(3):2024JC020925, doi:10.1029/2024JC020925.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025JGRC..13020925Z,
author = {{Zhang}, Yang and {Liang}, Xinfeng and {Chambers}, Don P. and {Huang}, Minghai},
title = "{Assessing Deep and Abyssal Ocean Heat Content Changes With a Dynamically Consistent Ocean State Estimate}",
journal = {Journal of Geophysical Research (Oceans)},
year = 2025,
month = mar,
volume = {130},
number = {3},
pages = {2024JC020925},
abstract = "{Because of the sparseness of existing observations, our understanding of
deep (2,000{\textendash}4,000 m) and abyssal (>4,000 m) ocean
heat content (OHC) changes remains limited. Previous studies
utilizing repeated hydrographic section measurements identified
a global warming trend in these layers. However, studies based
on a widely used ocean state estimate ECCO v4 (Estimating the
Circulation and Climate of the Ocean, version 4) show a
contradictory cooling trend in the deep and abyssal Pacific and
Indian Oceans. To examine if the sparseness of hydrographic
measurements results in this contrasting conclusion, we
conducted a sampling experiment with ECCO v4. Our results show
that the signs of the OHC trends in the deep and abyssal oceans
from the full spatial-temporal data and the sampled data are
generally consistent. The largest uncertainties mainly occur in
regions where the deep ocean is dominated by newly formed deep-
water masses or where hydrographic sections are extremely
sparse, such as the Northwest Atlantic Ocean and the Southern
Ocean. Our findings also indicate that the discrepancies between
ECCO v4 and observations in deep and abyssal OHC changes are not
likely a sampling issue, and further studies are needed to
determine the reasons.}",
doi = {10.1029/2024JC020925},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025JGRC..13020925Z},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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