Publication Abstracts

Couldrey et al. 2013

Couldrey, M.P., L. Jullion, A.C. Naveira Garabato, C. Rye, L. Herráiz-Borreguero, P.J. Brown, M.P. Meredith, and K.L. Speer, 2013: Remotely induced warming of Antarctic Bottom Water in the eastern Weddell gyre. Geophys. Res. Lett., 40, no. 11, 2755-2760, doi:10.1002/grl.50526.

Four repeat hydrographic sections across the eastern Weddell gyre at 30°E reveal a warming (by ∼0.1°C) and lightening (by °0.02-0.03 kg/m3) of the Antarctic Bottom Water (AABW) entering the gyre from the Indian sector of the Southern Ocean between the mid-1990s and late 2000s. Historical hydrographic and altimetric measurements in the region suggest that the most likely explanation for the change is increased entrainment of warmer mid-depth Circumpolar Deep Water by cascading shelf water plumes close to Cape Darnley, where the Indian-sourced AABW entering the Weddell gyre from the east is ventilated. This change in entrainment is associated with a concurrent southward shift of the Antarctic Circumpolar Current's (ACC) southern boundary in the region. This mechanism of AABW warming may affect wherever the ACC flows close to Antarctica.

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BibTeX Citation

@article{co03210t,
  author={Couldrey, M. P. and Jullion, L. and Naveira Garabato, A. C. and Rye, C. and Herráiz-Borreguero, L. and Brown, P. J. and Meredith, M. P. and Speer, K. L.},
  title={Remotely induced warming of Antarctic Bottom Water in the eastern Weddell gyre},
  year={2013},
  journal={Geophys. Res. Lett.},
  volume={40},
  number={11},
  pages={2755--2760},
  doi={10.1002/grl.50526},
}

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RIS Citation

TY  - JOUR
ID  - co03210t
AU  - Couldrey, M. P.
AU  - Jullion, L.
AU  - Naveira Garabato, A. C.
AU  - Rye, C.
AU  - Herráiz-Borreguero, L.
AU  - Brown, P. J.
AU  - Meredith, M. P.
AU  - Speer, K. L.
PY  - 2013
TI  - Remotely induced warming of Antarctic Bottom Water in the eastern Weddell gyre
JA  - Geophys. Res. Lett.
VL  - 40
IS  - 11
SP  - 2755
EP  - 2760
DO  - 10.1002/grl.50526
ER  -

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