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Nesting operational forecasting models in the Eastern Mediterranean: active and slave mode

Nesting operational forecasting models in the Eastern Mediterranean: active and slave mode
Nesting operational forecasting models in the Eastern Mediterranean: active and slave mode
Modern ocean operational systems involve different groups and tools, in different regions and scales. Blending all these in a unique system with reliable forecasting capabilities is an important task. The efficiency of nesting procedures between different scale and resolution models are crucial in determining whether the dynamics at the different scales are well represented at each level or the nesting technique suppresses the dynamical features emerging from individual modelling components. In the present work, we investigate the role of the initialization of telescopically nested and with double horizontal resolution forecasting systems in the Eastern Mediterranean, comparing the results between weekly initialized experiments ("slave'' mode) and "free'' runs ("active'' mode) at the regional (Aegean-Levantine area) and shelf (Cyprus) scale. It is found that, although the main circulation pattern remains similar, the differences in the domain mean kinetic energy between the "slave'' and the "active'' experiments in the Aegean-Levantine region are large in both September 2004 and January 2005, with the "active'' being much more energetic, while in the Cyprus area differences are significantly smaller. The most pronounced differences in the circulation and sea surface temperature and salinity fields are observed in the Aegean Sea, during September 2004, related to the inflow and spreading of the Black Sea Water, and the Rhodes Gyre, during January 2005, related to small-scale eddy activity developed and surviving in the "active'' mode experiment that decreases the area of the gyre.
1812-0822
1225-1254
Sofianos, S.S.
efbd4dc9-1c4c-49f7-bc83-33930f54cf8f
Skliris, N.
07af7484-2e14-49aa-9cd3-1979ea9b064e
Mantziafou, A.
7a9e122a-bae0-457d-8102-89925e7f1a77
Lascaratos, A.
168181e0-1bce-4123-be04-853e59b69ed7
Zodiatis, G.
ad317639-8f2e-47ca-909c-b21217ce2629
Lardner, R.
814ff764-cf11-4fb1-8f47-8a2cf7db2994
Hayes, D.
8e6aca36-c1db-4dac-b6b8-89b4a4c5189b
Georgiou, G.
6141795d-706b-4157-9edd-5c159f335ffa
Sofianos, S.S.
efbd4dc9-1c4c-49f7-bc83-33930f54cf8f
Skliris, N.
07af7484-2e14-49aa-9cd3-1979ea9b064e
Mantziafou, A.
7a9e122a-bae0-457d-8102-89925e7f1a77
Lascaratos, A.
168181e0-1bce-4123-be04-853e59b69ed7
Zodiatis, G.
ad317639-8f2e-47ca-909c-b21217ce2629
Lardner, R.
814ff764-cf11-4fb1-8f47-8a2cf7db2994
Hayes, D.
8e6aca36-c1db-4dac-b6b8-89b4a4c5189b
Georgiou, G.
6141795d-706b-4157-9edd-5c159f335ffa

Sofianos, S.S., Skliris, N., Mantziafou, A., Lascaratos, A., Zodiatis, G., Lardner, R., Hayes, D. and Georgiou, G. (2006) Nesting operational forecasting models in the Eastern Mediterranean: active and slave mode. Ocean Science Discussions, 3 (4), 1225-1254. (doi:10.5194/osd-3-1225-2006).

Record type: Article

Abstract

Modern ocean operational systems involve different groups and tools, in different regions and scales. Blending all these in a unique system with reliable forecasting capabilities is an important task. The efficiency of nesting procedures between different scale and resolution models are crucial in determining whether the dynamics at the different scales are well represented at each level or the nesting technique suppresses the dynamical features emerging from individual modelling components. In the present work, we investigate the role of the initialization of telescopically nested and with double horizontal resolution forecasting systems in the Eastern Mediterranean, comparing the results between weekly initialized experiments ("slave'' mode) and "free'' runs ("active'' mode) at the regional (Aegean-Levantine area) and shelf (Cyprus) scale. It is found that, although the main circulation pattern remains similar, the differences in the domain mean kinetic energy between the "slave'' and the "active'' experiments in the Aegean-Levantine region are large in both September 2004 and January 2005, with the "active'' being much more energetic, while in the Cyprus area differences are significantly smaller. The most pronounced differences in the circulation and sea surface temperature and salinity fields are observed in the Aegean Sea, during September 2004, related to the inflow and spreading of the Black Sea Water, and the Rhodes Gyre, during January 2005, related to small-scale eddy activity developed and surviving in the "active'' mode experiment that decreases the area of the gyre.

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Published date: 2006
Organisations: Physical Oceanography

Identifiers

Local EPrints ID: 365231
URI: http://eprints.soton.ac.uk/id/eprint/365231
ISSN: 1812-0822
PURE UUID: 881f3b95-196b-4f5a-8926-dab9c483d8e7
ORCID for N. Skliris: ORCID iD orcid.org/0000-0002-2473-2586

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Date deposited: 28 May 2014 10:51
Last modified: 15 Mar 2024 03:39

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Contributors

Author: S.S. Sofianos
Author: N. Skliris ORCID iD
Author: A. Mantziafou
Author: A. Lascaratos
Author: G. Zodiatis
Author: R. Lardner
Author: D. Hayes
Author: G. Georgiou

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