On the outflow of dense water from the weddell and ross Seas in OCCAM model

We describe the seasonal and interannual variability of volume transports in the Weddell and Ross Seas using the 1/12◦ 20-yr simulation of the OCCAM global ocean general circulation model. The average simulated full-depth cumulative volume transports were 28.5 ± 2.9 Sv (1 Sv ≡ 106 m3 s −1 ) and 13.4...

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Bibliographic Details
Published in:Ocean Science
Main Authors: Pereira, Rodrigo Kerr Duarte, Heywood, Karen, Mata, Mauricio Magalhães, Garcia, Carlos Alberto Eiras
Format: Article in Journal/Newspaper
Language:English
Published: 2012
Subjects:
Antarctic
Weddell
Weddell Sea
Antarc*
Online Access:http://repositorio.furg.br/handle/1/5867
https://doi.org/10.5194/os-8-369-2012
Description
Summary:We describe the seasonal and interannual variability of volume transports in the Weddell and Ross Seas using the 1/12◦ 20-yr simulation of the OCCAM global ocean general circulation model. The average simulated full-depth cumulative volume transports were 28.5 ± 2.9 Sv (1 Sv ≡ 106 m3 s −1 ) and 13.4 ± 5.2 Sv, across the main export regions of the Weddell and Ross Seas, respectively. The values of mean outflow of Antarctic Bottom Water (AABW) (defined by neutral density γ n ≥ 28.27 kg m−3 ) from the Weddell and Ross Seas of 10.6 ± 3.1 Sv and 0.5 ± 0.7 Sv, respectively, agree with the range reported in historical observational studies. The export of Weddell Sea dense water in OCCAM is primarily determined by the strength of the Weddell Gyre. Variability in AABW export is predominantly at periods of ∼1 yr and 2–4 yr.

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