1. Anderson , D. L. T. T. Stockdale M. Balmaseda L. Ferranti F. Vitart F. Molteni F. Doblas-Reyes K. Mogensen A. Vidard 2007 Development of the ECMWF Seasonal Forecast System 3 ECMWF Tech. Memo. 503 Reading, U. K. Available at www.ecmwf.int
2. A multivariate treatment of bias for sequential data assimilation: Application to the tropical oceans;Balmaseda;Q. J. R. Meteorol. Soc.,2007
3. Balmaseda , M. A. A. Vidard D. Anderson 2007 The ECMWF System-3 ocean analysis system, ECMWF Tech. Memo. 508 Reading, U. K. Available from http://www.ecmwf.int/publications/library/ecpublications/_pdf/tm/501-600/tm508.pdf
4. From swallow floats to Argo-The development of neutrally buoyant floats;Gould;Deep Sea Res., Part II,2005
5. Salinity assimilation using S(T) relationships;Haines;Mon. Weather Rev.,2006