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  • Articles  (4)
  • Geosciences  (3)
  • Chemistry and Pharmacology  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Mixing and convection in the Greenland Sea from a tracer-release experiment (1999)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 401 (1999), S. 902-904 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Convective vertical mixing in restricted areas of the subpolar oceans, such as the Greenland Sea, is thought to be the process responsible for forming much of the dense water of the ocean interior. Deep-water formation varies substantially on annual and decadal timescales, and responds to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/44807
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The South Atlantic in the Fine-Resolution Antarctic Model (1994)
    Springer
    Annales geophysicae 12 (1994), S. 826-839 
    Details
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The geographical area covered by the Fine-Resolution Antarctic Model (FRAM) includes that part of the South Atlantic south of 24○S. A description of the dynamics and thermodynamics of this region of the model is presented. Both the mean and eddy fields in the model are in good agreement with reality, although the magnitude of the transients is somewhat reduced. The heat flux is northward and in broad agreement with many other estimates. Agulhas eddies are formed by the model and propagate westward into the Atlantic providing a mechanism for fluxing heat from the Indian Ocean. The confluence of the Brazil and Falkland currents produces a strong front and a large amount of mesoscale activity. In the less stratified regions to the south, topographic steering of the Antarctic circumpolar current is important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-994-0826-5
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Optimisation of a parallel ocean general circulation model (1997)
    Springer
    Annales geophysicae 15 (1997), S. 1369-1377 
    Details
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract This paper presents the development of a general-purpose parallel ocean circulation model, for use on a wide range of computer platforms, from traditional scalar machines to workstation clusters and massively parallel processors. Parallelism is provided, as a modular option, via high-level message-passing routines, thus hiding the technical intricacies from the user. An initial implementation highlights that the parallel efficiency of the model is adversely affected by a number of factors, for which optimisations are discussed and implemented. The resulting ocean code is portable and, in particular, allows science to be achieved on local workstations that could otherwise only be undertaken on state-of-the-art supercomputers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-997-1369-3
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  • 4
    Electronic Resource
    Electronic Resource
    Passive tracers in a general circulation model of the Southern Ocean (1999)
    Springer
    Annales geophysicae 17 (1999), S. 971-982 
    Details
    ISSN: 0992-7689
    Keywords: Oceanography: general (numerical modeling; water masses) ; Oceanography: physical (general circulation)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Passive tracers are used in an off-line version of the United Kingdom Fine Resolution Antarctic Model (FRAM) to highlight features of the circulation and provide information on the inter-ocean exchange of water masses. The use of passive tracers allows a picture to be built up of the deep circulation which is not readily apparent from examination of the veloCity or density fields. Comparison of observations with FRAM results gives good agreement for many features of the Southern Ocean circulation. Tracer distributions are consistent with the concept of a global “conveyor belt” with a return path via the Agulhas retroflection region for the replenishment of North Atlantic Deep Water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-0971-y
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