Ocean Science
Ocean Science
OS
Articles | Volume 19, issue 4
Articles | Volume 19, issue 4
https://doi.org/10.5194/os-19-1083-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/os-19-1083-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 4
Research article
 | 
18 Jul 2023
Research article |  | 18 Jul 2023

The Weddell Gyre heat budget associated with the Warm Deep Water circulation derived from Argo floats

Krissy Anne Reeve, Torsten Kanzow, Olaf Boebel, Myriel Vredenborg, Volker Strass, and Rüdiger Gerdes

Supplement

https://doi.org/10.5194/os-19-1083-2023-supplement

Data sets

Argo float data and metadata from Global Data Assembly Centre (Argo GDAC) Argo https://doi.org/10.17882/42182

Deep Horizontal Turbulent Diffusivity F. Sévellec, A. C. D. Verdière, and N. Kolodziejczyk https://doi.org/10.17882/91335

Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors M. Tschudi, W. N. Meier, J. S. Stewart, C. Fowler, and J. Maslanik https://doi.org/10.5067/INAWUWO7QH7B

Geostrophic Stream function of the Weddell Gyre derived from Argo floats from 2002 to 2016, integrated for the upper 50–2000 dbar, link to data files in NetCDF format K. A. Reeve, O. Boebel, T. Kanzow, V. Strass, and R. Gerdes https://doi.org/10.1594/PANGAEA.960571

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Short summary
The Weddell Gyre is key for bottom water formation. Prior studies show warming of the whole water column, except for the gyre’s heat source, Warm Deep Water (WDW). We use Argo floats to estimate a heat budget within WDW. Heat advects into the southern limb and upwards from below throughout. Turbulent diffusion removes heat through the top and transports heat from the southern limb into the interior and southwards towards Antarctica. Turbulent diffusion imports heat across the northern boundary.
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