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Warm and cold water routes of an O.G.C.M. thermohaline conveyor belt

Warm and cold water routes of an O.G.C.M. thermohaline conveyor belt
Warm and cold water routes of an O.G.C.M. thermohaline conveyor belt
A global general circulation model analyzed with a Lagrangian methodology is used to describe and quantify the paths, transports, and characteristics of the “warm” waters forming the upper branch of the conveyor belt in the North Atlantic Ocean. The total transport for this branch turns out to be 17.8 Sv in the North Atlantic at 20°N: 11.8 Sv are composed of waters coming from the two classical origins, the Drake Passage and the Indonesian Throughflow, which contribute with 6.5 and 5.3 Sv respectively. The remaining 6 Sv find their origins partly in the passage between Antarctica and the Australian Continent (with 3.1 Sv) and partly in the Indo-Atlantic sector itself (i.e., with 2.9 Sv). The geographical structure of the different routes emphasizes the role of the Southern Ocean and large-scale current systems in water mass transformation and distribution.
0094-8276
311-314
Speich, Sabrina
b96aaa4e-9c98-4598-b29e-59efc8edff51
Blanke, Bruno
b223bcd4-5fcf-4d9b-bf36-f21675932e14
Madec, Gurvan
ffb28deb-4bbd-4a4c-914f-492f813e4864
Speich, Sabrina
b96aaa4e-9c98-4598-b29e-59efc8edff51
Blanke, Bruno
b223bcd4-5fcf-4d9b-bf36-f21675932e14
Madec, Gurvan
ffb28deb-4bbd-4a4c-914f-492f813e4864

Speich, Sabrina, Blanke, Bruno and Madec, Gurvan (2001) Warm and cold water routes of an O.G.C.M. thermohaline conveyor belt. Geophysical Research Letters, 28 (2), 311-314.

Record type: Article

Abstract

A global general circulation model analyzed with a Lagrangian methodology is used to describe and quantify the paths, transports, and characteristics of the “warm” waters forming the upper branch of the conveyor belt in the North Atlantic Ocean. The total transport for this branch turns out to be 17.8 Sv in the North Atlantic at 20°N: 11.8 Sv are composed of waters coming from the two classical origins, the Drake Passage and the Indonesian Throughflow, which contribute with 6.5 and 5.3 Sv respectively. The remaining 6 Sv find their origins partly in the passage between Antarctica and the Australian Continent (with 3.1 Sv) and partly in the Indo-Atlantic sector itself (i.e., with 2.9 Sv). The geographical structure of the different routes emphasizes the role of the Southern Ocean and large-scale current systems in water mass transformation and distribution.

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More information

Published date: 2001
Organisations: National Oceanography Centre,Southampton

Identifiers

Local EPrints ID: 64823
URI: http://eprints.soton.ac.uk/id/eprint/64823
ISSN: 0094-8276
PURE UUID: 3b451ff7-0ac3-4e19-8610-a47bc556b6e5

Catalogue record

Date deposited: 15 Jan 2009
Last modified: 27 Apr 2022 06:25

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Contributors

Author: Sabrina Speich
Author: Bruno Blanke
Author: Gurvan Madec

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