Global 2° operational ocean system (PSY2G or miniPOG)

2° (55-222 Km).

31 levels.

SAM2V1 : the Mercator Assimilation System (SAM) 2 version 1 is an extended Kalman filter based on the SEEK formulation proposed by Pham et al. (1998). The control vector consists in the barotropic height and 3D temperature, salinity, zonal and meridional velocity fields. Forecast error covariance is modelled by a collection of 3D ocean state anomalies (a few hundreds) which evolve seasonaly. Observation errors are diagonal and have a spatial dependancy.

• Computer: NEC SX8R
• Computing time: on 5 processors, the restitution time is 30 minutes for a 7-day analysis (2H CPU).
• Output size: 200 Megabytes per week of analysis

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