Articles | Volume 15, issue 3
Research article
20 Jun 2019
Research article |  | 20 Jun 2019

The ECMWF operational ensemble reanalysis–analysis system for ocean and sea ice: a description of the system and assessment

Hao Zuo, Magdalena Alonso Balmaseda, Steffen Tietsche, Kristian Mogensen, and Michael Mayer


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Short summary
OCEAN5 is the fifth generation of the ocean and sea-ice analysis system at ECMWF. It was used for production of historical ocean and sea-ice states from 1979 onwards and is also used for generating real-time ocean and sea-ice states responsible for initializing the operational ECMWF weather forecasting system. This is a valuable data set with broad applications. A description of the OCEAN5 system and an assessment of the historical data set have been documented in this reference paper.