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  • 11
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    Unbekannt
    Scalability and Performance of MOM: High Resolution Simulations of the Atlantic Circulation (2003)
    World Scientifcic Publishing
    In:  [Paper] In: 10th Workshop on the Use of High Performance Cumputing in Meteorology: Realizing the TeraComputing, 04.-08.11.2002, Reading, UK . Realizing Teracomputing: Proceedings of the Tenth ECMWF Workshop on the Use of High Performance Computers in Meteorology; Reading, UK, 4 – 8 November 2002 ; pp. 257-267 .
    Details
    Publikationsdatum: 2019-09-06
    Beschreibung: In the framework of FLAME (Family of Linked Atlantic Model Experiments) an eddy-permitting model of the Atlantic Ocean was used to hindcast the uptake and spreading of anthropogenic trace gases, CO2 and CFC, during the last century. The code is based on the public domain software MOM (Modular Ocean Model) Version 2.1. Towards a parallel version the code was extended for shmem and MPI message passing to achieve portability to Cray-T3E and NEC SX systems. The performance of this production code on Cray-T3E as well as NEC-SX5 and SX6 systems is discussed. To underline the need for high-resolution modeling some physical model results are presented.
    Materialart: Conference or Workshop Item , PeerReviewed
    Format: text
    DOI: 10.1142/5280
    Standort Signatur Einschränkungen Verfügbarkeit
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    OceanRep: Artikel in Konferenzband
  • 12
    facet.materialart.
    Unbekannt
    Fresh Water Balance of the Gulf Stream System in a Regional Model Study (2002)
    Springer
    In:  Climate Dynamics, 18 . pp. 17-27.
    Details
    Publikationsdatum: 2016-09-13
    Beschreibung: We investigate the dependence of surface fresh water fluxes in the Gulf Stream and North Atlantic Current (NAC) area on the position of the stream axis which is not well represented in most ocean models. To correct this shortcoming, strong unrealistic surface fresh water fluxes have to be applied that lead to an incorrect salt balance of the current system. The unrealistic surface fluxes required by the oceanic component may force flux adjustments and may cause fictitious long-term variability in coupled climate models. To identify the important points in the correct representation of the salt balance of the Gulf Stream a regional model of the northwestern part of the subtropical gyre has been set up. Sensitivity studies are made where the westward flow north of the Gulf Stream and its properties are varied. Increasing westward volume transport leads to a southward migration of the Gulf Stream separation point along the American coast. The salinity of the inflow is essential for realistic surface fresh water fluxes and the water mass distribution. The subpolar-subtropical connection is important in two ways: The deep dense flow from the deep water mass formation areas sets up the cyclonic circulation cell north of the Gulf Stream. The surface and mid depth flow of fresh water collected at high northern latitudes is mixed into the Gulf Stream and compensates for the net evaporation at the surface.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s003820100164
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 13
    facet.materialart.
    Unbekannt
    Water mass formation from revised COADS data (1995)
    AMS (American Meteorological Society)
    In:  Journal of Physical Oceanography, 25 (10). pp. 2444-2457.
    Details
    Publikationsdatum: 2018-04-05
    Beschreibung: Surface heat and freshwater fluxes from the Comprehensive 0cean-Atmosphere Data Set are revised and used diagnostically to compute air-sea transformation rates on density, temperature, and salinity classes over the domain of the data. Maximum rates occur over the warmest water and over mode waters, which are the dominant result of air-sea interaction. Transformation in different is accordingly distinguished by temperature and salinity, just as water masses in different oceans are so distinguished. Over the entire domain, to about 30°S, approximately 80×106 m3 s−1 of warm cool water are transformed by air-sea fluxes, on annual average. Calculations for several seas in the North Atlantic, where deep water is thought to originate, we also presented.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1175/1520-0485(1995)025〈2444:WMFFRC〉2.0.CO;2
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 14
    facet.materialart.
    Unbekannt
    On the Mid-Depth Circulation in the Labrador and Irminger Seas (2001)
    AGU (American Geophysical Union)
    In:  Geophysical Research Letters, 28 . pp. 3433-3436.
    Details
    Publikationsdatum: 2018-02-14
    Beschreibung: A numerical circulation model with 1/6° resolution and an accurate topography formulation explains details of the observed circulation in the Irminger and Labrador Seas that were recently revealed by Lavender et al. [2000]. We show that the recirculation pattern is established through a locally wind induced flow controlled by the bottom topography and enhanced through remote baroclinic forcing by the dense plume of Denmark Strait overflow water. The basic circulation is a robust feature in a hierarchy of model setups. It exists in the purely barotropic case driven by steady winds and is even maintained when realistic daily forcing is added. The narrow recirculation zone is manifested by a sea level depression spanning from the Denmark Strait across the Irminger into the Labrador Sea.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1029/2001GL013192
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
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