1. Allen MR, Smith LA (1997) Optimal filtering in singular spectrum analysis. Phys Lett 234:419–428
2. Balmaseda MA, Mogensen K (2010) Evaluation of the ERA-INTERIM forcing fluxes from an ocean perspective. ECMWF ERA report series no. 6. http://www.ecmwf.int/publications/library/do/references/list/782009
3. Balmaseda MA, Weaver A (2006) Temperature, salinity, and sea level: climate variability from ocean reanalyses. Paper presented at the CLIVAR/GODAE meeting on ocean synthesis evaluation, August 31–September 1, 2006, ECMWF, Reading, UK. Meeting presentation available at: http://www.clivar.org/organization/gsop/synthesis/groups/Items3_4.ppt . Accessed 26 May 2009
4. Balmaseda M, Vidard A, Anderson D (2008) The ECMWF system 3 ocean analysis system. Mon Wea Rev 136:3018–3034
5. Balmaseda M, Mogensen K, Molteni F, Weaver A (2010) The NEMOVAR-COMBINE ocean re-analysis. COMBINE technical report no. 1. http://www.combine-project.eu/Technical-Reports.1668.0.html