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  • AGU (American Geophysical Union)  (14)
  • Deutsche Forschungsgemeinschaft  (4)
  • Institut für Meereskunde Kiel  (4)
  • Marine Technology Society  (2)
  • 11
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    Institut für Meereskunde Kiel
    In:  Bundesministerium für Forschung und Technologie: Forschungsbericht, M 75-06 . Institut für Meereskunde Kiel, Kiel, Germany, 74 pp.
    Publication Date: 2020-02-18
    Type: Report , NonPeerReviewed
    Format: text
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  • 12
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    AGU (American Geophysical Union)
    In:  Journal of Geophysical Research: Oceans, 103 (C3). pp. 5419-5428.
    Publication Date: 2018-04-30
    Description: Recent hydrographic sections and high-quality historical data sets are used to determine geostrophic currents at subtropical latitudes in the western basin of the South Atlantic. Levels of no motion are determined from water mass information and a mass balance constraint to obtain the transport field of North Atlantic Deep Water (NADW) in this region. The incoming NADW transport of about 20 Sv from the north at 19 degrees S appears to be balanced by only one third of this transport leaving in the south and two thirds leaving to the east or northeast at the Mid-Atlantic Ridge. A simple model is proposed to determine the cause of the NADW branching. It is shown that potential vorticity preservation in the presence of topographic changes leads to a similar flow pattern as observed, with branching near the Vitoria-Trindade-Ridge and also an eastward turning of the southward western boundary current at about 28 degrees S, the latitude where a balance of planetary vorticity change and stretching can be expected.
    Type: Article , PeerReviewed
    Format: text
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  • 13
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    Deutsche Forschungsgemeinschaft
    In:  Meteor Forschungsergebnisse: Reihe A, Allgemeines, Physik und Chemie des Meeres, 14 . pp. 1-12.
    Publication Date: 2017-01-23
    Type: Article , PeerReviewed
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  • 14
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    AGU (American Geophysical Union)
    In:  Journal of Geophysical Research: Oceans, 94 (C4). pp. 4757-4762.
    Publication Date: 2019-02-27
    Description: A 4-year expendable bathythermograph data set (1984–1987) from the area between southern Brazil and the Antarctic Peninsula provides information on the interannual variability of front locations. Two boundaries of subtropical water at different depths are identified north and south of the Brazil Current-Falkland (Malvinas) Current confluence zone. The northern Subtropical Front is displaced over a large part of the Argentine Basin from one observational period to the other. The shallow southern Subtropical Front appears fixed to the Falkland Escarpment. The Polar Front and Subantarctic Front locations do not vary much, except for one case where a cold core eddy in the Polar Frontal Zone causes a large northward displacement of the Subantarctic Front.
    Type: Article , PeerReviewed
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  • 15
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    Institut für Meereskunde Kiel
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 101B . Institut für Meereskunde Kiel, Kiel, Germany, 16 pp.
    Publication Date: 2013-07-31
    Description: 2. Auflage
    Type: Report , NonPeerReviewed
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  • 16
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    Institut für Meereskunde Kiel
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 019 . Institut für Meereskunde Kiel, pp. 1-26, 26 pp.
    Publication Date: 2015-10-14
    Type: Report , NonPeerReviewed
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  • 17
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    Marine Technology Society
    In:  Transactions of the International Buoy Technology Symposium, 1964 . pp. 483-488.
    Publication Date: 2016-05-24
    Type: Article , NonPeerReviewed
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  • 18
    Publication Date: 2023-09-19
    Type: Report , NonPeerReviewed
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  • 19
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    AGU (American Geophysical Union)
    In:  Global Biogeochemical Cycles, 12 (3). pp. 479-499.
    Publication Date: 2018-03-15
    Description: The meridional oceanic transports of dissolved inorganic carbon and oxygen were calculated using six transoceanic sections occupied in the South Atlantic between 11 degrees S and 30 degrees S. The total dissolved inorganic carbon (TCO2) data were interpolated onto conductivity-temperature-depth data to obtain a high-resolution data set, and Ekman, depth-dependent and depth-independent components of the transport were estimated. Uncertainties in the depth-independent velocity distribution were reduced using an inverse model. The inorganic carbon transport between 11 degrees S and 30 degrees S was southward, decreased slightly toward the south, and was -2150 +/- 200 kmol s(-1) (-0.81 +/- 0.08 Gt C yr(-1)) at 20 degrees S. This estimate includes the contribution of net mass transport required to balance the salt transport through Bering Strait. Anthropogenic CO2 concentrations were estimated for the sections. The meridional transport of anthropogenic CO2 was northward, increased toward the north, and was 430 kmol s(-1) (0.16 Gt C yr(-1)) at 20 degrees S. The calculations imply net southward inorganic carbon transport of 2580 kmol s(-1) (1 Gt C yr(-1)) during preindustrial times. The slight contemporary convergence of inorganic carbon between 10 degrees S and 30 degrees S is balanced by storage of anthropogenic CO2 and a sea-to-air flux implying little local divergence of the organic carbon transport. During the preindustrial era, there was significant regional convergence of both inorganic carbon and oxygen, consistent with a sea-to-air gas flux driven by warming. The northward transport of anthropogenic CO2 carried by the meridional overturning circulation represents an important source for anthropogenic CO2 currently being stored within the North Atlantic Ocean.
    Type: Article , PeerReviewed
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  • 20
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    AGU (American Geophysical Union)
    In:  Geophysical Research Letters, 33 (L24609).
    Publication Date: 2018-02-19
    Description: The structure of the subtropical South Indian Ocean Countercurrent (SICC) is revealed by altimeter-derived absolute geostrophic surface velocities. It is a narrow, eastward-flowing current between 22° and 26°S confined to planetary wave trains which propagate westward through the Indian Ocean. Multi-year averaging identifies it as a well-defined current between Madagascar and 80°E, continuing with lower intensity between 90° and 100°E. It virtually coincides with the northern limit of Subtropical Underwater subduction. Geostrophic currents from hydrographic sections closely correspond to these surface patterns. Volume transports of the countercurrent down to 800 dbar are of order (107 m3 s−1). Evidence is provided for a narrow branch of the South Equatorial Current (SEC) approaching Madagascar near 18°S and feeding the southern East Madagascar Current (EMC) which appears to continue westward around the southern tip of Madagascar. It then partially retroflects and nourishes the SICC.
    Type: Article , PeerReviewed
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