Ocean Reanalysis/analysis
ECMWF estimates the state of the global ocean via the operational system OCEAN5. The OCEAN5 system is a global eddy-permitting ocean-sea ice ensemble (5 members) reanalysis-analysis system. It comprises a Behind-Real-Time (BRT) component, that was used for production of Ocean ReAnalysis System 5 (ORAS5) and provides an estimate of the historical ocean state from 1979 to present (with a few days delay); and a Real-Time (RT) component, that provides the latest ocean conditions for NWP applications. A backward extension of ORAS5 is also available from 1958 onwards.
