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  • BMBF / IFM-GEOMAR  (1)
  • Berlin, Heidelberg : Springer Berlin Heidelberg  (1)
  • ELSEVIER SCI LTD  (1)
  • 1
    Online Resource
    Online Resource
    Ocean Dynamics (2012)
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Details Availability
    Keywords: Geography ; Oceanography ; Physical geography ; Earth Sciences ; Geography ; Oceanography ; Physical geography ; Meeresströmung ; Meeresströmung
    Description / Table of Contents: Carsten Eden
    Type of Medium: Online Resource
    Pages: Online-Ressource (XXIV, 704p. 199 illus. in color, digital)
    ISBN: 9783642234507
    Series Statement: SpringerLink
    URL: https://doi.org/10.1007/978-3-642-23450-7
    URL: http://dx.doi.org/10.1007/978-3-642-23450-7
    URL: https://swbplus.bsz-bw.de/bsz36526914xcov.jpg
    URL: https://zbmath.org/?q=an:1296.86001
    DOI: 10.1007/978-3-642-23450-7
    RVK:
    RB 10414
    Language: English
    Note: Includes bibliographical references and index , pt. 1. Fundamental laws -- pt. 2. Common approximations -- pt. 3. Ocean waves -- pt. 4. Oceanic turbulence and eddies -- pt. 5. Aspects of ocean circulation theory -- pt. 6. Appendix.
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  • 2
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    The impact of advection schemes on restratifiction due to lateral shear and baroclinic instabilities (2015)
    ELSEVIER SCI LTD
    In:  EPIC3Ocean Modelling, ELSEVIER SCI LTD, 94, pp. 112-127, ISSN: 1463-5003
    Details
    Publication Date: 2017-01-27
    Description: This paper quantifies spurious dissipation and mixing of various advection schemes in idealised experiments of lateral shear and baroclinic instabilities in numerical simulations of a re-entrant Eady channel for configurations with large and small Rossby numbers. In addition, a two-dimensional barotropic shear instability test case is used to examine numerical dissipation of momentum advection in isolation, without any baroclinic effects. Effects of advection schemes on the evolution of background potential energy and the dynamics of the restratification process are analysed. The advection schemes for momentum and tracers are considered using several different methods including a recently developed local dissipation analysis. As highly accurate but computationally demanding schemes we apply WENO and MP5, and as more efficient lower-order total variation diminishing (TVD) schemes we use among others the SPL-max-View the MathML source13 and a third-order-upwind scheme. The analysis shows that the MP5 and SPL-max-View the MathML source13 schemes provide the most accurate results. Following our comprehensive analysis of computational costs, the MP5 scheme is approximately 2.3 times more expensive in our implementation. In contrast to the configuration with a small Rossby number, in which significant differences between schemes are apparent, the different advection schemes behave similarly for a larger Rossby number. Regions of high numerical dissipation are shown to be associated with low grid Reynolds numbers. The major outcome of the present study is that generally positive global numerical dissipation and positive background potential energy evolution delay the restratification process.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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    PAPER (OA)
  • 3
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    Nordatlantik I - 1.1 Die Bedeutung des Süßwasserhaushalts für die zukünftige Entwicklung der thermohalinen Zirkulation; 1.2 Rolle des äquatorialen Atlantiks als Schlüsselregion für Klimaschwankungen im atlantischen Raum; 2.2 Schwankungen der tiefen Randstromzirkulation am Ausgang des Labradorsee; 3.2 Schwankungen der thermohalinen Zirkulation in hoch auflösenden Modellen : Schlussbericht (2010)
    BMBF / IFM-GEOMAR
    In:  In: Der Nordatlantik als Teil des Erdsystems: vom System-Verständnis zur Analyse regionaler Auswirkungen : BMBF Verbundvorhaben als Beitrag zur nationalen und internationalen Erdsystemforschung ; Abschlußbericht Nordatlantik-Projekt. BMBF / IFM-GEOMAR, Kiel, Germany, pp. 1-15.
    Details
    Publication Date: 2019-04-18
    Description: Visible results were obtained by the working groups in Kiel on the first four aspects of the project, resulting in improvements of the quantitative knowledge of key processes and key regions in the Atlantic Ocean. New ocean and coupled ocean-atmosphere models were analyzed with regard to seasonal and decadal climate changes, as well as optimization techniques. In addition, the influence of circulation variability on oceanic CO2 uptake was investigated. Intense field studies were carried out successfully in two regions: The measurements obtained in the equatorial Atlantic serve as the basis for a better understanding of the role of the tropical Atlantic for climate fluctuations in the Atlantic in general, and also provide predictability indicators for seasonal forecasts. The second focal area of field work was the southern region of the Labrador Sea near 53°N where different components of the North Atlantic Deep Water merge to form the deep western boundary current (DWBC). Here a mooring array has been deployed for the past 13 years to monitor this branch of the thermohaline circulation exiting the Labrador Sea. In collaboration with other national and international large-scale observations (ship-based measurements, Argo floats, etc.) and modeling efforts, the field work carried out by the Kiel working groups provides a significant contribution toward a sustainable regional ocean-climate analysis system.
    Type: Book chapter , NonPeerReviewed
    Format: text
    DOI: 10.2314/GBV:639459536
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    OceanRep: Book chapter
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