CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
unknown
The mid-depth circulation of the northwestern tropical Atlantic observed by floats
Authors
Boebel
Boebel
+45 more
Bower
Colin
Curry
David Fratantoni
Eden
Fratantoni
Getzlaff
Goni
Gouriou
Jochum
Johns
Johns
Johns
Kirchner
Lankhorst
Machín
Marshall
Matthias Lankhorst
Michel Ollitrault
Ollitrault
Paillet
Philip Richardson
Rhein
Rhein
Rhein
Richardson
Richardson
Richardson
Rossby
Rossby
Schmid
Schmid
Schott
Schott
Schott
Send
Speer
Steinfeldt
Stramma
Stramma
Stramma
Stramma
Talley
Uwe Send
Walter Zenk
Publication date
1 January 2009
Publisher
'Elsevier BV'
Doi
Cite
Abstract
Author Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part I: Oceanographic Research Papers 56 (2009): 1615-1632, doi:10.1016/j.dsr.2009.06.002.A comprehensive analysis of velocity data from subsurface floats in the northwestern tropical Atlantic at two depth layers is presented: one representing the Antarctic Intermediate Water (AAIW, pressure range 600–1050 dbar), the other the upper North Atlantic Deep Water (uNADW, pressure range 1200–2050 dbar). New data from three independent research programs are combined with previously available data to achieve blanket coverage in space for the AAIW layer, while coverage in the uNADW remains more intermittent. Results from the AAIW mainly confirm previous studies on the mean flow, namely the equatorial zonal and the boundary currents, but clarify details on pathways, mostly by virtue of the spatial data coverage that sets float observations apart from e. g. shipborne or mooring observations. Mean transports in each of five zonal equatorial current bands is found to be between 2.7 and 4.5 Sv. Pathways carrying AAIW northward beyond the North Brazil Undercurrent are clearly visible in the mean velocity field, in particular a northward transport of 3.7 Sv across 16° N between the Antilles islands and the Mid- Atlantic Ridge. New maps of Lagrangian eddy kinetic energy and integral time scales are presented to quantify mesoscale activity. For the uNADW, mean flow and mesoscale properties are discussed as data availability allows. Trajectories in the uNADWeast of the Lesser Antilles reveal interactions between the Deep Western Boundary Current (DWBC) and the basin interior, which can explain recent hydrographic observations of changes in composition of DWBC water along its southward flow.MOVE was funded by the Bundesministerium fu¨r Bildung und Forschung (grants 03F0246A and 03F0377B) as well as by the Deutsche Forschungsgemeinschaft (grant SE815/21), NBC by the National Science Foundation through grants OCE 97-29765 and OCE 01-36477, and SAMBA was fully supported by Ifremer
Similar works
Full text
Open in the Core reader
Download PDF
Available Versions
Crossref
See this paper in CORE
Go to the repository landing page
Download from data provider
Last time updated on 11/12/2019
HAL-Université de Bretagne Occidentale
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-00501642v1
Last time updated on 12/11/2016
OceanRep
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:oceanrep.geomar.de:7326
Last time updated on 16/07/2013
ArchiMer - Institutional Archive of Ifremer
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:archimer.ifremer.fr:6815
Last time updated on 05/08/2013
Woods Hole Open Access Server
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:darchive.mblwhoilibrary.or...
Last time updated on 08/06/2012