Sensitivity of an idealized subtropical gyre to the eastern boundary conditions

The flow pattern of the North Atlantic Subtropical Gyre (NASG) is simulated using a highly idealised one-layer quasi-geostrophic wind-driven model. The novel feature of the model is the specification of the eastern boundary conditions. This is an upwelling favourable region with a quasi-permanent so...

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Bibliographic Details
Published in:Scientia Marina
Main Authors: Láiz, I., Sangrà, P., Pelegrí, J. L., Marrero-Díaz, A.
Format: Article in Journal/Newspaper
Language:English
Published: Consejo Superior de Investigaciones Científicas 2001
Subjects:
numerical modelling
subtropical gyre
eastern boundary conditions
Canary Current
North Atlantic
Online Access:https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/714
https://doi.org/10.3989/scimar.2001.65s1187
Description
Summary:The flow pattern of the North Atlantic Subtropical Gyre (NASG) is simulated using a highly idealised one-layer quasi-geostrophic wind-driven model. The novel feature of the model is the specification of the eastern boundary conditions. This is an upwelling favourable region with a quasi-permanent southward flowing coastal jet, which is fed by the eastern branch of the Canary Current. The corresponding boundary conditions are non-zero normal flux and constant potential vorticity, the latter being consistent with the generation of anticyclonic vorticity by the coastal jet. We examine the sensitivity of the model to the eastern boundary conditions and compare the results with recent observations for the region. No disponible

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