&. Arakawa and . Lamb, A potential enstrophy and energy conserving scheme for the shallow water equations, Monthly Weather Review, vol.109, pp.18-36, 1981.

R. Atlas, Atmospheric observations and experiments to asses their usefulness in data assimilation, Journal of Metrology Society of Japan, vol.75, issue.1B, pp.111-130, 1997.

J. Ballabrera-poy, P. Brasseur, and J. Verron, Dynamical evolution of the error statistics with the SEEK filter to assimilate altimetric data in eddyresolving ocean models, Q.J.R. Metals Society, vol.127, pp.233-253, 2001.
URL : https://hal.archives-ouvertes.fr/hal-00211729

B. Barnier, L. Siefrift, and P. Marchesiello, Thermal forcing for a global ocean circulation model using a three-year climatology of ECMWF analyses, Journal of Marine Systems, vol.6, pp.363-380, 1995.

B. Barnier, G. Madec, T. Penduff, J. M. Molines, A. M. Tréguier et al., Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy-permitting resolution, Ocean Dynamics, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00183611

B. Blanke and P. Delecluse, Variability of the tropical Atlantic Ocean simulated by a general circulation model with two different mixed-layer physics, Journal of Physical Oceanography, vol.23, pp.1363-1388, 1993.
URL : https://hal.archives-ouvertes.fr/hal-01143309

C. Boone, G. Larnicol, and E. Obligis, WP2000: Characteristics of SMOS/AQUARIUS level-3 product, 2005.

J. Boutin, P. Waldteufel, N. Martin, G. Caudal, and E. Dinnat, Surface salinity retrieved from SMOS measurements over the global ocean: Imprecisions due to sea surface roughness and temperature uncertainties, Journal of Atmospheric and Oceanic Technology, vol.21, pp.1432-1447, 2004.

J. Brankart, C. Testut, P. Brasseur, and J. Verron, Implementation of a multivariate data assimilation scheme for isopycnic coordinate ocean models: Application to a 1993-96 hindcast of the North Atlantic Ocean circulation, Journal of Geophysical Research, vol.108, p.3074, 2003.
URL : https://hal.archives-ouvertes.fr/hal-00212019

P. Brasseur, Ocean data assimilation using sequential methods based on the Kalman Filter, GODAE, an Integrated View of Oceanography: Ocean Weather Forecasting in the 21st Century, p.577, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00232778

P. Brasseur and J. Verron, The SEEK filter method for data assimilation in oceanography: A synthesis, Ocean Dynamics, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00220505

P. Brasseur, P. Bahurel, L. Bertino, F. Birol, J. M. Brankart et al., Data assimilation in operational ocean forecasting systems: The MERCATOR and MERSEA developments, Q.J.R. Metals Society, issue.22, pp.3561-3582, 2005.

N. S. Cooper, The effect of salinity on Tropical Ocean Models, Journal of Physical Oceanography, vol.18, pp.697-707, 1988.

T. Delcroix, M. J. Mcphaden, A. Dessier, and Y. Gouriou, Time and space scales for sea surface salinity in tropical oceans, Deep-Sea Research. Part, vol.1, pp.787-813, 2005.
URL : https://hal.archives-ouvertes.fr/hal-00280368

A. Dessier and J. Donguy, The sea-surface salinity in the tropical Atlantic between 10°S and 30°N, seasonal and interannual variations, Deep-Sea Research I, vol.41, pp.81-100, 1977.

F. Durand, L. Gourdeau, T. Delcroix, and J. Verron, Assimilation of Sea surface Salinity in a Tropical OGCM: A twin experiment approach, Journal of Geophysical Research, vol.107, issue.C12, p.8010, 2002.
URL : https://hal.archives-ouvertes.fr/hal-00230139

F. Durand, L. Gourdeau, T. Delcroix, and J. Verron, Can we improve the representation of modeled ocean mixed layer by assimilating surface-only satellite-derived data? A case study for the tropical Pacific during the 1997-1998 El Niño, Journal of Geophysical Research, vol.108, issue.C6, p.3200, 2003.

N. Ferry and G. Reverdin, Sea surface salinity interannual variability in the western tropical Atlantic: An ocean general circulation model study, Journal of Geophysical Research, vol.109, issue.C5, pp.148-0227, 2004.
URL : https://hal.archives-ouvertes.fr/hal-00161324

J. Font, Y. Kerr, and M. Berger, Measuring ocean salinity from space, vol.11, pp.17-19, 2000.

J. S. Godfrey and E. J. Lindstrom, The heat budget of the equatorial western Pacific surface mixed layer, Journal of Geophysical Research, vol.94, pp.8007-8017, 1989.

E. Greiner, The Mercator 1992-2002 PSY1v2 ocean reanalysis for tropical and North Atlantic, pp.13-18, 2006.

E. Greiner, M. Benkiran, E. Blayo, and G. Dibarboure, General Scientific Paper, vol.11, 1992.

I. V. Kamenkovich and E. Sarachik, On reducing errors in temperature and salinity in an ocean model forced by restoring boundary conditions, Journal of Physical Oceanography, vol.34, pp.1856-1869, 2004.

G. Lagerloef and T. Delcroix, Sea surface salinity: A regional case study for the tropical Pacific. Observing the Ocean in the 21st centuryAust, Bur. of Meteorolog, pp.137-148, 2001.

G. S. Lagerloef, Introduction to the special section: The role of surface salinity on upper ocean dynamics, air-sea interaction and climate, Journal of Geophysical Research, vol.107, issue.10, p.1029, 2002.

G. Madec, P. Delecluse, M. Imbart, and C. Levy, OPA 8.1 general circulation model reference manual. Notes de l'IPSL no, Parie: Université P. et M. Curie (91 pp), 1998.
URL : https://hal.archives-ouvertes.fr/hal-00154217

C. Maes, K. Kentaro, T. Delcroix, W. S. Kessler, M. Mcphaden et al., Observed correlation of surface salinity, temperature and barrier layer at the eastern edge of the western Pacific warm pool, Geophysical Research Letters, vol.33, p.6601, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00280367

S. Masson and P. Delecluse, Influence of the Amazon river runoff on the tropical Atlantic, Physics and Chemistry of the Earth, vol.26, pp.137-142, 2001.

R. Murtuggude and A. J. Busalacchi, Salinity effects in a tropical ocean model, Journal of Geophysical Research, vol.103, pp.3283-3300, 1998.

T. Penduff, P. Brasseur, C. Testut, B. Barnier, and J. Verron, Assimilation of sea-surface temperature and altimetric data in the South Atlantic Ocean: Impact on basin-scale properties, Journal of Marine Research, vol.60, pp.805-833, 2002.
URL : https://hal.archives-ouvertes.fr/hal-00182388

D. T. Pham, J. Verron, and M. C. Roubaud, Singular evolutive extended Kalman Filter with EOF initialization for data assimilation in oceanography, Journal of Marine Systems, vol.16, issue.3-4, pp.323-340, 1998.

S. Philipps, C. Boone, and E. Obligis, The role of averaging for improving sea surface salinity retrieval from the Soil Moisture and Surface Salinity (SMOS) satellite and impact of auxiliary data, Journal of Atmospheric and Oceanic Technology, 2005.

T. Reynaud, P. Legrand, H. Mercier, and B. Barnier, A new analysis of hydrographic data in the Atlantic and its application to an inverse modelling study, International WOCE Newsletter, p.32, 1998.

M. Rio and F. Hernandez, A mean dynamic topography computed over the world ocean from altimetry, in situ measurements, and a geoid model, Journal of Geophysical Research, vol.109, p.12032, 2004.

D. Roemmich, M. Morris, W. Young, and J. R. Donguy, Fresh equatorial jets, Journal of Physical Oceanography, vol.24, pp.540-558, 1994.

A. Sen, Y. Kim, D. Caruso, G. S. Lagerloef, R. Colomb et al., Aquarius/SAC-D mission overview, SPIE 13th International Symposium on Remote Sensing, pp.11-16, 2006.

W. H. Smith and D. T. Sandwell, Global sea floor topography from satellite altimetry and ship depth soundings, Science, vol.277, 1956.

D. Stammer, K. Ueyoshi, A. Köhl, W. L. Large, S. A. Josey et al., Estimating air-sea fluxes of heat, freshwater, and momentum through global ocean data assimilation, Journal of Geophysical Research, vol.109, p.5023, 2004.

C. E. Testut, P. Brasseur, J. M. Brankart, and J. Verron, 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, vol.291, issue.316, pp.40-41, 2003.
URL : https://hal.archives-ouvertes.fr/hal-00212078

J. Thiébault, E. Rogers, W. Wang, and B. Katz, A new high-resolution blended real-time global sea surface temperature analysis, Bulletin of the American Meteorological Society, vol.84, pp.645-656, 2003.

B. Tranchant, C. E. Testut, N. Ferry, F. Birol, and P. Brasseur, SAM2: The second generation of Mercator assimilation system, Proceeding of the 4th international Conference on EUROGOOS, pp.650-655, 2005.

A. Tréguier, T. Reynaud, T. Pichevin, B. Barnier, and J. Molines, The CLIPPER Project: High resolution modelling of the Atlantic, International WOCE Newsletter, 1999.

J. Vialard, P. Delecluse, and C. Menkes, A modelling study of salinity variability and its effects in the tropical Pacific Ocean during the 1993-1999 period, Journal of Geophysical Research, vol.107, issue.C12, p.8005, 2002.

C. J. Vörösmarty, B. Fekete, and B. A. Tucker, River Discharge Database, Version 1.0 (RivDIS v1.0), Volumes 0 through 6. A contribution to IHP-V Theme 1. Paris: Technical Documents in Hydrology Series, UNESCO, 1996.

X. Wang and Y. Chao, Simulated Sea Surface variability in the tropical Pacific, Geophysical Research Letters, vol.31, p.2302, 2004.

L. Yu, R. A. Weller, and B. Sun, Improving Latent and Sensible Heat Flux Estimates for the Atlantic Ocean (1988-99) by a Synthesis Approach, Journal of Geophysical Research, 2004.