Bell, M.J., M.J. Martin, and N.K. Nichols. 2004. Assimilation of data into an ocean model with systematic errors near the equator. Quarterly Journal of the Royal Meteorological Society 130:873–893.
Bloom, S.C., L.L. Takacs, A.M. Da Silva, and D. Ledvina. 1996. Data assimilation using incremental analysis updates. Monthly Weather Review 124:1,256–1,271.
Brasseur, P. 2006. Ocean data assimilation using sequential methods based on the Kalman filter. From theory to practical implementations. Pp. 271–316 in Ocean Weather Forecasting: An Integrated View of Oceanography. E.P. Chassignet and J. Verron, eds, Springer.
Brasseur P., P. Bahurel, L. Bertino, F. Birol, J.-M. Brankart, N. Ferry, S. Losa, E. Rémy, J. Schröter, S. Skachko, and others. 2005. Data assimilation for marine monitoring and prediction: The Mercator operational assimilation systems and the MERSEA developments. Quarterly Journal of the Royal Meteorological Society 131:3,561–3,582.
Chelton, D.B., R.A. DeSzoeke, M.G. Schlax, K.E. Naggar, and N. Siwertz. 1998. Geographical variability of the first baroclinic Rossby radius of deformation. Journal of Physical Oceanography 28:433–460.
Cummings, J.A. 2005. Operational multivariate ocean data assimilation. Quarterly Journal of the Royal Meteorological Society 131:3,583–3,604.
Daley, R., and E. Barker. 2001. NAVDAS formulation and diagnostics. Monthly Weather Review 129:869–883.
Dombrowsky, E., L. Bertino, G.B. Brassington, E.P. Chassignet, F. Davidson, H.E. Hurlburt, M. Kamachi, T. Lee, M.J. Martin, S. Mei, and M. Tonani. 2009. GODAE systems in operation. Oceanography 22(3):80–95.
Evensen, G. 2006. Data Assimilation: The Ensemble Kalman Filter. Springer, 280 pp.
Fu, L.-L., I. Fukumori, and R.N. Miller. 1993. Fitting dynamic models to the Geosat sea level observations in the Tropical Pacific Ocean. Part II: A linear, wind-driven model. Journal of Physical Oceanography 23:2,162–2,181.
Fujii, Y. 2005. Preconditioned Optimizing Utility for Large-dimensional analyses (POpULar). Journal of Oceanography 61:167–181.
Fujii, Y., and M. Kamachi. 2003. Three-dimensional analysis of temperature and salinity in the equatorial Pacific using a variational method with vertical coupled temperature-salinity EOF modes. Journal of Geophysical Research 108(C9), 3297, doi:10.1029/2002JC001745.
Fujii, Y., S. Ishizaki, and M. Kamachi. 2005. Application of nonlinear constraints in a three-dimensional variational ocean analysis. Journal of Oceanography 61:655–662.
Fukumori, I. 2002. A partitioned Kalman filter and smoother. Monthly Weather Review 130:1,370–1,383.
Fukumori, I. 2006. What is data assimilation really solving, and how is the calculation actually done? Pp. 317–342 in Ocean Weather Forecasting: An Integrated View of Oceanography. E.P. Chassignet and J. Verron, eds, Springer.
Fukumori, I., and P. Malanotte-Rizzoli. 1995. An approximate Kalman filter for ocean data assimilation: An example with an idealized Gulf Stream model. Journal of Geophysical Research 100:6,777–6,793.
Fukumori, I., J. Benveniste, C. Wunsch, and D.B. Haidvogel. 1993. Assimilation of sea surface topography into an ocean circulation model using a steady-state smoother. Journal of Physical Oceanography 23:1,831–1,855.
Hurlburt, H.E., G.B. Brassington, Y. Drillet, M. Kamachi, M. Benkiran, R. Bourdallé-Badie, E.P. Chassignet, G.A. Jacobs, O. Le Galloudec, J.-M. Lellouche, and others. 2009. High-resolution global and basin-scale ocean analyses and forecasts. Oceanography 22(3):110–127.
Ingleby, B., and M. Huddleston. 2007. Quality control of ocean temperature and salinity profiles: Historical and real-time data. Journal of Marine Systems 65:158–175.
Kim, S.-B., T. Lee, and I. Fukumori. 2007. Mechanisms controlling the interannual variation of mixed layer temperature averaged over the NINO3 region. Journal of Climate 20:3,822–3,843.
Lea, D., J.-P. Drecourt, K. Haines, and M.J. Martin. 2008. Ocean altimeter assimilation with observational- and model-bias correction. Quarterly Journal of the Royal Meteorological Society 134:1,761–1,774.
Martin, M.J., A. Hines, and M.J. Bell. 2007. Data assimilation in the FOAM operational short-range ocean forecasting system: A description of the scheme and its impact. Quarterly Journal of the Royal Meteorological Society 133:981–995.
Oke, P.R., G.B. Brassington, D.A. Griffin, and A. Schiller. 2008. The Bluelink Ocean Data Assimilation System (BODAS). Ocean Modelling 21:46–70.
Stark, J.D., C.J. Donlon, M.J. Martin, and M.E. McCulloch. 2007. OSTIA: An operational, high resolution, real time, global sea surface temperature analysis system. Paper presented at Oceans ‘07 IEEE Conference, “Marine Challenges: Coastline to Deep Sea,” June 18–21, 2007, Aberdeen, Scotland.
Testut C.-E., P. Brasseur, J.M. Brankart, and J. Verron. 2003. Assimilation of sea-surface temperature and altimetric observations during 1992–1993 into an eddy-permitting primitive equation model of the North Atlantic Ocean. Journal of Marine Systems 40–41:291–316.
Tshimanga, J., S. Gratton, A.T. Weaver, and A. Sartenaer. 2008. Limited-memory preconditioners, with application to incremental four-dimensional variational data assimilation. Quarterly Journal of the Royal Meteorological Society 134:753–771.
Usui, N., H. Tsujino, H. Nakano, and Y. Fujii. 2008. Formation process of the Kuroshio large meander in 2004. Journal of Geophysical Research 113, C08047, doi:10.1029/2007JC004675.
Wang, O., I. Fukumori, T. Lee, and B. Cheng. 2004. On the cause of eastern equatorial Pacific Ocean T-S variations associated with El Niño. Geophysical Research Letters 31, L15309, doi:10.1029/2004GL020188.
Weaver, A.T., C. Deltel, E. Machu, S. Ricci, and N. Daget. 2005. A multivariate balance operator for variational ocean data assimilation. Quarterly Journal of the Royal Meteorological Society 131:3,605–3,625.
Wunsch, C. 2006. Discrete Inverse and State Estimation Problems: With Geophysical Fluid Applications. Cambridge University Press, New York, NY, 384 pp.