1 Evaluation of two global HYCOM 1/12º hindcasts in the Mediterranean Sea Cedric Sommen 1 In collaboration with Alexandra Bozec 2 and Eric Chassignet 2 1 The French Military Academy of Saint-Cyr, Guer, France 2 Center for Ocean-Atmospheric Prediction Studies, Tallahassee, FL / 25
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1 Evaluation of two global HYCOM 1/12º hindcasts in the Mediterranean Sea Cedric Sommen 1 In collaboration with Alexandra Bozec 2 and Eric Chassignet 2.
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Evaluation of two global HYCOM 1/12º hindcasts in the
Mediterranean Sea
Cedric Sommen1
In collaboration with Alexandra Bozec2 and Eric Chassignet2
1 The French Military Academy of Saint-Cyr, Guer, France
2 Center for Ocean-Atmospheric Prediction Studies, Tallahassee, FL/ 25
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OutlineOutline
• The Mediterranean Sea• Presentation of the HYCOM global ocean
prediction system• Experimental set-up• Circulation• Temperature and Salinity• Transport• Comparison with ARGO profile• Summary
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The Mediterranean SeaThe Mediterranean Sea
The Mediterranean Sea is a mid-latitude marginal sea connected to the Atlantic Ocean by the Gibraltar Strait. It has the particularity to produce dense (warm and salty) water that spreads into the Atlantic Ocean and thus can potentially have an impact on the global thermohaline circulation (Mauritzen and McCartney, 2001).
The main goal of this study is to determine if the 1/12º Hybrid Coordinate Ocean Model (HYCOM) global configuration is able to reproduce the main features of the Mediterranean circulation and its outflow in the Atlantic Ocean. In particular, we
evaluate the ability of two hindcast simulations on the period June 2007 to September 2008
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EXPERIMENTAL SET-UPEXPERIMENTAL SET-UP
• Hindcast 1– Spin-up with climatological atmospheric reanalysis ERA15 1979-
1993. – Hindcast with 3-hourly 0.5º NOGAPS from Nov 2003-present. – Vertical projection of observed SSH using Cooper and Haines