Zirkulation und Klimavariabilität des tropischen Atlantiks = Circulation and climate variability in the tropical Atlantic ; Fahrtbericht / Cruise Report SO151 KLIIMAZIIRKEL (BMBF Projekt 03G0151A), Bridgetown - Recife, 1. - 27. November 2000.

Stramma, Lothar (2001) Zirkulation und Klimavariabilität des tropischen Atlantiks = Circulation and climate variability in the tropical Atlantic ; Fahrtbericht / Cruise Report SO151 KLIIMAZIIRKEL (BMBF Projekt 03G0151A), Bridgetown - Recife, 1. - 27. November 2000. . Institut für Meereskunde an der Universität Kiel, Kiel, 33 pp. DOI 10.3289/CR_SO_151.

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Abstract

RV "SONNE" cruise So151, during 1 to 27 November 2000 from Bridgetown, Barbados to Recife, Brazil was carried out by the Institut für Meereskunde Kiel within the contect of the international CLIVAR (Climate Variability and Predictability) projects. The work was a contribution of the german ocean-CLIVAR (Sub-project "tropical-subtropical interaction") program of Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF). One main aim of the sub-project is the investigation of the climate relevance of the shallow tropical-subtropical circulation cell in the equatorial Atlantic and its focus in the western boundary current off Brazil.
The main objectives beneath the CLIVAR related research in the upper ocean were investigations of the deep sea circulation. In the upper ocean the interaction between the tropical water circulation an the subtropical North Atlantic in the late phase of the northern summer was one particular objective. Some goals of it were the measurements of transports of warm water off the coast towards the Caribbean, the existence and structure of the equatorial Undercurrent as part of the northern hemispheric shallow thermohaline cell and its focus in the western boundary current. Objectives of the deep circulation are the spreading of North Atlantic Deep Water (NADW) at and across the equator, as well as the recirculation in the Guyana-Basin and the expected arrival of a strong pulse of Labrador Sea Water at the equator.
Measurements carried out were high resolution measurements of temperature, conductivity, pressure and oxygen by CTD casts, continuous current profiling in the upper 500 m of the water column using shipboard Acoustic Doppler Current Profiler (ADCP), top to bottom velocity profiles from an ADCP lowered with the CTD, freon distribution from the Niskin bottles and continuous surface temperature and salinity distributions, meteorological parameters and depth soundings. In addition 2 moorings were recovered and redeployed and 5 profiling floats were deployed.

The cruise was carried out in close co-operation with So152 (Prof. M. Rhein) and So153 (Prof. U. Send) who also carried out CLIVAR investigations. The sections perpendicular to the coast will be worked up together with the ones from So152 to investigate large scale water mass and circulation distributions.

Document Type: Report (Cruise Report)
Keywords: RV SONNE ; Cruise report ; SO151 ; KLIMAZIRKEL
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Open Access Journal?: Yes
DOI etc.: 10.3289/CR_SO_151
Projects: CLIVAR
Expeditions/Models/Experiments:
Date Deposited: 09 Dec 2014 08:17
Last Modified: 09 Dec 2014 08:37
URI: http://oceanrep.geomar.de/id/eprint/26361

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