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

Data sets

Argo float data and metadata from Global Data Assembly Centre (Argo GDAC) Argo

Deep Horizontal Turbulent Diffusivity F. Sévellec, A. C. D. Verdière, and N. Kolodziejczyk

Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors M. Tschudi, W. N. Meier, J. S. Stewart, C. Fowler, and J. Maslanik

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

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.