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Impact of cooling on the water mass exchange of Agulhas rings in a high resolution ocean model

Impact of cooling on the water mass exchange of Agulhas rings in a high resolution ocean model
Impact of cooling on the water mass exchange of Agulhas rings in a high resolution ocean model
The leakage of water from three Agulhas rings has been studied in a high resolution global ocean model using a Lagrangian particle following technique. A bowl shaped ring boundary that reaches a radius of 140 km and a depth of 800 m separates regions of fast and slow leakage. The dilution of Agulhas ring water generally increases with depth, but a shallow secondary circulation enhances leakage in the upper 150 m. Strong surface cooling upsets the horizonal pressure gradient which is balanced by subinertial motions that act to form this shallow overturning cell.
0094-8276
L16312
Donners, J.
4c955edf-4ba2-4091-ab0f-9015f2407475
Drijfhout, S.S.
a5c76079-179b-490c-93fe-fc0391aacf13
Coward, A.C.
53b78140-2e65-476a-b287-e8384a65224b
Donners, J.
4c955edf-4ba2-4091-ab0f-9015f2407475
Drijfhout, S.S.
a5c76079-179b-490c-93fe-fc0391aacf13
Coward, A.C.
53b78140-2e65-476a-b287-e8384a65224b

Donners, J., Drijfhout, S.S. and Coward, A.C. (2004) Impact of cooling on the water mass exchange of Agulhas rings in a high resolution ocean model. Geophysical Research Letters, 31 (16), L16312. (doi:10.1029/2004GL020644).

Record type: Article

Abstract

The leakage of water from three Agulhas rings has been studied in a high resolution global ocean model using a Lagrangian particle following technique. A bowl shaped ring boundary that reaches a radius of 140 km and a depth of 800 m separates regions of fast and slow leakage. The dilution of Agulhas ring water generally increases with depth, but a shallow secondary circulation enhances leakage in the upper 150 m. Strong surface cooling upsets the horizonal pressure gradient which is balanced by subinertial motions that act to form this shallow overturning cell.

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More information

Published date: 2004
Organisations: Marine Systems Modelling, Physical Oceanography, National Oceanography Centre,Southampton

Identifiers

Local EPrints ID: 11156
URI: http://eprints.soton.ac.uk/id/eprint/11156
ISSN: 0094-8276
PURE UUID: 322c167d-f25e-4e70-9d2d-45ca36a7d20d

Catalogue record

Date deposited: 27 Oct 2004
Last modified: 15 Jul 2019 19:36

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