References

Ocean Science

Ocean Sci.

1812-0792

Copernicus Publications

Göttingen, Germany

10.5194/os-5-461-2009

A nested Atlantic-Mediterranean Sea general circulation model for operational forecasting

Oddo

¹ Adani

¹ Pinardi

² Fratianni

¹ Tonani

¹ Pettenuzzo

Gruppo Nazionale di Oceanografia Operativa, Istituto Nazionale di Geofisica e Vulcanologia, Via Aldo Moro 44, 40128 Bologna, Italy

Centro Interdipartimentale per la Ricerca in Scienze Ambientali, Università di Bologna Ravenna, Italy

26 10 2009

5 4 461 473

2009

This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/

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A new numerical general circulation ocean model for the Mediterranean Sea has been implemented nested within an Atlantic general circulation model within the framework of the Marine Environment and Security for the European Area project (MERSEA, Desaubies, 2006). A 4-year twin experiment was carried out from January 2004 to December 2007 with two different models to evaluate the impact on the Mediterranean Sea circulation of open lateral boundary conditions in the Atlantic Ocean. One model considers a closed lateral boundary in a large Atlantic box and the other is nested in the same box in a global ocean circulation model. Impact was observed comparing the two simulations with independent observations: ARGO for temperature and salinity profiles and tide gauges and along-track satellite observations for the sea surface height. The improvement in the nested Atlantic-Mediterranean model with respect to the closed one is particularly evident in the salinity characteristics of the Modified Atlantic Water and in the Mediterranean sea level seasonal variability.

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