Impact of ARGO temperature and salinity measurements in the new ECMWF ocean analysis system, with focus on the interaction with altimeter data.
Magdalena A. Balmaseda(1) , Arthur Vidard(1) , and David L.T. Anderson(1)
Reading RG2 9AX,
The impact of temperature data from ARGO floats in the ECWMF
ocean analysis system was addressed in a previous study (Vidard et al 2005).
No evaluation was made of the salinity information, since by the time of the
study the ECMWF system did not have the capability of assimilating salinity.
Besides the time period for the impact of ARGO in this study was restricted
Recently, the operational ocean analysis system at ECMWF has been substantially
upgraded, and both salinity data and sea level anomalies from
altimeter are now assimilated together with subsurface temperature data.
The new system is used to assess the impact of both temperature and salinity
measurements from ARGO by conducting observing system experiments (OSEs)
during the period 2000-2005. The potential synergy between ARGO and altimeter
information is specifically addressed in the experimental design.