On the width of the equatorial deep jets.

Greatbatch, Richard John , Brandt, Peter , Claus, Martin , Didwischus, Sven-Helge and Fu, Yao (2012) On the width of the equatorial deep jets. Open Access Journal of Physical Oceanography, 42 . pp. 1729-1740. DOI 10.1175/JPO-D-11-0238.1.

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Abstract

The equatorial deep jets (EDJ) are a striking feature of the equatorial ocean circulation. In the Atlantic Ocean, the EDJ are associated with a vertical scale of between 300 and 700 m, a time scale of roughly 4.5 years and upward energy propagation to the surface. It has been found that the meridional width of the EDJ is roughly 1.5 times larger than expected based on their vertical scale. Here we use a shallow water model for a high order baroclinic vertical normal mode to argue that mixing of momentum along isopycnals can explain the enhanced width. A lateral eddy viscosity of 300 m2 s−1 10 is found to be sufficient to account for the width implied by observations.

Document Type: Article
Additional Information: WOS:000310183000008
Keywords: Equatorial deep jets; Atlantic Ocean, Baroclinic flows, Ocean dynamics, Waves, oceanic, Interannual variability, Tropical variabilty; INTERNAL WAVE INTERACTIONS; ATLANTIC-OCEAN; VARIABILITY; BASIN; MODES
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > SFB 754
OceanRep > SFB 754 > A4
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1175/JPO-D-11-0238.1
ISSN: 0022-3670
Projects: SFB754, Future Ocean
Expeditions/Models/Experiments:
Date Deposited: 11 Sep 2012 05:36
Last Modified: 23 Sep 2019 18:28
URI: http://oceanrep.geomar.de/id/eprint/14992

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