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A multivariate ensemble Kalman filter (EnKF) is used to assimilate in-situ temperature and salinity observations and remotely sensed altimeter data into the Poseidon global Ocean General Circulation Model (OGCM).

The analysis field are compared to a univariate analysis of temperature and salinity using optimal interpolation (OI-TS).

Assimilated Variables

• EnKF Exp1: T, S, SSH
• EnKF Exp2: No SSH
• EnKF Exp3: No Argo S
• OI-T: T
• OI-TS: T, S
• OI-TSR2: T, S, new parameters
• OI-NOARGO2: No Argo S

Analysis	Pacific	Indian
Salinity Time-Series Sections		75E0N 75E10S
T,S,U Profiles
TS Contour Plot	West:  North  South Central:  North  South East:  North  South	Equatorial Central
Statistics: U Profiles
RMS: T,S,U Profiles

Hindcasts	March				July
	SST	SSH	SSS	HC	SST	SSH	SSS	HC
Time-Series
Time-Series at Lags
Anomaly Correlation