One of the GMAO's objectives is to use the EnKF in its routine seasonal-to-interannual ensemble forecasting procedure to process SSH and temperature observations with the OGCM prior to coupling with the NSIPP-1 AGCM. An ensemble of coupled-model forecasts can thus be initialized with the final state of each ensemble member at the end of the EnKF run. The procedure is discussed in this talk, with focus on hindcasts of the 2002 El Nino event. The impact on the coupled-model-hindcast skill of assimilating (1) in situ temperature profiles from the TAO array and from expendable bathythermographs and (2) remotely sensed SSH anomalies from the TOPEX/Poseidon altimeter is discussed. The skill of the EnKF assimilation system with simultaneous processing of the temperature and SSH data is contrasted to (1) that of a EnKF system with sole processing of the temperature data, (2) to that of processing the SSH data only, also with the EnKF, and (3) to that of the temperature OI system which is used in the Office's current routine forecasting procedure and is expected to be soon replaced with the multivariate EnKF.