Modeling a turbulence effect in formation of the Antarctic Circumpolar Current

International audience A simple model to determine a turbulence effect in formation of the Antarctic Circumpolar Current (ACC) is suggested. The model is founded on the theory of rotationally anisotropic turbulence and is set up as a generalization of the geostrophic description of the Antarctic Cir...

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Bibliographic Details
Main Authors: Heinloo, J., Toompuu, A.
Other Authors: Marine Systems Institute (MSI), Tallinn University of Technology (TTÜ)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2006
Subjects:
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
Antarctic
Southern Ocean
The Antarctic
Antarc*
Online Access:https://hal.science/hal-00318225
https://hal.science/hal-00318225/document
https://hal.science/hal-00318225/file/angeo-24-3191-2006.pdf
Description
Summary:International audience A simple model to determine a turbulence effect in formation of the Antarctic Circumpolar Current (ACC) is suggested. The model is founded on the theory of rotationally anisotropic turbulence and is set up as a generalization of the geostrophic description of the Antarctic Circumpolar Current (ACC). It predicts the turbulence effect as an additive correction to the flow velocity predicted by the geostrophic balance. The correction, calculated from the optimally analyzed hydrographic data in the Southern Ocean, results in an increased ACC total baroclinic volume transport and in a shift in the current velocity maximum to the south, if compared with the pure geostrophic estimate.

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