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| Titel |
A nested circulation model for the North Aegean Sea |
| VerfasserIn |
V. Kourafalou, K. Tsiaras |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 3, no. 1 ; Nr. 3, no. 1 (2007-01-24), S.1-16 |
| Datensatznummer |
250000762
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| Publikation (Nr.) |
 copernicus.org/os-3-1-2007.pdf |
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| Zusammenfassung |
A multi-nested approach has been employed for numerical simulations in the
northern part of the Aegean Sea in the framework of the MFSTEP
(Mediterranean Forecast System: Toward Environmental Predictions) project.
The high resolution (~1.6 km) hydrodynamic model of the North Aegean
Sea (NAS) has been nested within a coarser model of the Eastern
Mediterranean (resolution ~3.6 km) which is also nested within a basin
scale model for the Mediterranean Sea (resolution of ~7 km). The high
resolution of the NAS model allows the representation of topographic details
that have never been reproduced in modelling studies of the region. Such
details can enhance the simulation of coastal features, but can also
influence basin-scale processes, such as the pathways of waters of Black Sea
origin inflowing at the Dardanelles Straits and bifurcating through island
passages.
We employ comparisons of the North Aegean and Eastern Mediterranean models
in terms of computed flow fields and distribution of hydrodynamic
properties, to evaluate the nesting procedure, the initialization
requirements and the ability of a nested model to perform reliable short
term simulations that employ high resolution atmospheric forcing, when
initialized from a coarser OGCM.
We show that the topographic details of the high resolution, nested NAS
model affect the distribution of the Dardanelles plume and the evolution of
coastal currents, while the imposed high frequency, high resolution
atmospheric forcing allows for the formation of an overall energetic flow
field after a few days of spin-up period. Increased resolution and smaller
coastal depth in the NAS simulations influence the flow through island
passages and straits. A longer initialization procedure results in the
establishment of stronger currents and better-developed buoyant plumes. |
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