Numerical simulation and decomposition of kinetic energies in the Central Mediterranean Sea: insight on mesoscale circulation and energy conversion (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Numerical simulation and decomposition of kinetic energies in the Central Mediterranean Sea: insight on mesoscale circulation and energy conversion (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.5194/os-7-504-2011 (literal)

Alternative label

• Sorgente R., Olita A., Oddo P., Fazioli L., Ribotti A. (2011)
  Numerical simulation and decomposition of kinetic energies in the Central Mediterranean Sea: insight on mesoscale circulation and energy conversion
  in Ocean science (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Sorgente R., Olita A., Oddo P., Fazioli L., Ribotti A. (literal)

Pagina inizio

• 503 (literal)

Pagina fine

• 519 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 7 (literal)

Rivista

• Ocean science (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 17 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• IAMC INGV (literal)

Titolo

• Numerical simulation and decomposition of kinetic energies in the Central Mediterranean Sea: insight on mesoscale circulation and energy conversion (literal)

Abstract

• The spatial and temporal variability of eddy and mean kinetic energy of the Central Mediterranean region has been investigated, from January 2008 to December 2010, by mean of a numerical simulation mainly to quantify the mesoscale dynamics and their relationships with physical forcing. In order to understand the energy distribution pro- cesses, the baroclinic energy conversion has been analysed, suggesting hypotheses about the drivers of the mesoscale activity in this area. The ocean model used is based on the Princeton Ocean Model implemented at 1/32 o horizon- tal resolution. Surface momentum and buoyancy fluxes are interactively computed by mean of standard bulk formulae using predicted model Sea Surface Temperature and at-mospheric variables provided by the European Centre for Medium Range Weather Forecast operational analyses. At its lateral boundaries the model is one-way nested within the Mediterranean Forecasting System operational products. The model domain has been subdivided in four sub- regions: Sardinia channel and southern Tyrrhenian Sea, Sicily channel, eastern Tunisian shelf and Libyan Sea. Tem- poral evolution of eddy and mean kinetic energy has been analysed, on each of the four sub-regions, showing different behaviours. On annual scales and within the first 5 m depth, the eddy kinetic energy represents approximately the 60 % of the total kinetic energy over the whole domain, confirming the strong mesoscale nature of the surface current flows in this area. The analyses show that the model well reproduces the path and the temporal behaviour of the main known sub- basin circulation features. New mesoscale structures have been also identified, from numerical results and direct obser- vations, for the first time as the Pantelleria Vortex and the Medina Gyre. Correspondence to: R. Sorgente (roberto.sorgente@cnr.it) The classical kinetic energy decomposition (eddy and mean) allowed to depict and to quantify the permanent and fluctuating parts of the circulation in the region, and to dif- ferentiate the four sub-regions as function of relative and ab- solute strength of the mesoscale activity. Furthermore the Baroclinic Energy Conversion term shows that in the Sar- dinia Channel the mesoscale activity, due to baroclinic insta- bilities, is significantly larger than in the other sub-regions, while a negative sign of the energy conversion, meaning a transfer of energy from the Eddy Kinetic Energy to the Eddy Available Potential Energy, has been recorded only for the surface layers of the Sicily Channel during summer. (literal)

Prodotto di

• Ecologia delle aree marino costiere e di transizione: processi e funzioni (TA.P05.017.002) (Modulo)
• Institute for coastal marine environment (IAMC) (Istituto)
• Modelli numerici per lo studio degli ecosistemi marini planctonici pelagici e costieri (TA.P04.017.001) (Modulo)

Autore CNR

• ROBERTO SORGENTE (Persona)
• ALBERTO RIBOTTI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Numerical simulation and decomposition of kinetic energies in the Central Mediterranean Sea: insight on mesoscale circulation and energy conversion" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for coastal marine environment (IAMC) (Istituto)
• Ecologia delle aree marino costiere e di transizione: processi e funzioni (TA.P05.017.002) (Modulo)
• Modelli numerici per lo studio degli ecosistemi marini planctonici pelagici e costieri (TA.P04.017.001) (Modulo)

Autore CNR di

• ROBERTO SORGENTE (Persona)
• ALBERTO RIBOTTI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Ocean science (Rivista)

Insieme di parole chiave di

• Keywords of "Numerical simulation and decomposition of kinetic energies in the Central Mediterranean Sea: insight on mesoscale circulation and energy conversion" (Insieme di parole chiave)