Decadal variability of the Indian Ocean cross-equatorial exchange in SODA.

Schoenefeldt, Rena and Schott, Friedrich (2006) Decadal variability of the Indian Ocean cross-equatorial exchange in SODA. Open Access Geophysical Research Letters, 33 (L08602). DOI 10.1029/2006GL025891.

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The mean meridional circulation across the equator in the Indian Ocean is characterized by the shallow Cross-Equatorial Cell (CEC). At the western boundary, the Somali Current transports thermocline waters northward which then upwell, mostly off Northeast Africa. The upwelled waters are taking up heat and then exported back southward by southward near-surface Ekman and Sverdrup transports. The CEC is closed by subduction in the southeastern subtropics and includes contributions from the Indonesian Throughflow. In an analysis of output from the SODA assimilation, a decadal slowdown of the different branches of the CEC is demonstrated here.

Document Type: Article
Keywords: Decadal variability, Indian Ocean, cross-equatorial exchange, SODA
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2006GL025891
ISSN: 0094-8276
Projects: CLIVAR
Date Deposited: 03 Dec 2008 16:52
Last Modified: 27 Feb 2019 08:40

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