Incorporating State-Dependent Temperature–Salinity Constraints in the Background Error Covariance of Variational Ocean Data Assimilation

@article{Ricci2005IncorporatingST,
  title={Incorporating State-Dependent Temperature–Salinity Constraints in the Background Error Covariance of Variational Ocean Data Assimilation},
  author={Sophie Ricci and Anthony T. Weaver and J{\'e}r{\^o}me Vialard and Philippe Rogel},
  journal={Monthly Weather Review},
  year={2005},
  volume={133},
  pages={317-338}
}
Abstract Several studies have illustrated how the univariate assimilation of temperature data can have a detrimental effect on the ocean-state variables (salinity, currents, etc.) not directly constrained by the data. In this paper, the authors describe how the salinity adjustment method proposed by Troccoli and Haines can be included as a multivariate temperature–salinity (T–S) constraint within a background-error covariance model for variational data assimilation. The method is applied to a… 
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References

SHOWING 1-10 OF 35 REFERENCES
Use of the Temperature Salinity Relation in a Data Assimilation Context
Abstract A data analysis using conductivity–temperature–depth (CTD) measurements in the western tropical Pacific is carried out to get an estimate of the timescale over which temperature–salinity
Salinity Adjustments in the Presence of Temperature Data Assimilation
Abstract This paper is an evaluation of the role of salinity in the framework of temperature data assimilation in a global ocean model that is used to initialize seasonal climate forecasts. It is
Retrospective Analysis of the Salinity Variability in the Western Tropical Pacific Ocean Using an Indirect Minimization Approach
Abstract Empirical orthogonal functions of the combined variability of temperature and salinity have been used as basis functions for the indirect reconstruction of salinity from observations of
Impact of sea level assimilation on salinity variability in the Western Equatorial Pacific
Abstract In the primitive equation model for the tropical Pacific at the National Centers for Environmental Prediction, subsurface temperature observations are assimilated. The addition of
Three- and Four-Dimensional Variational Assimilation with a General Circulation Model of the Tropical Pacific Ocean. Part II: Physical Validation
Abstract Three- and four-dimensional variational assimilation (3DVAR and 4DVAR) systems have been developed for the Ocean Parallelise (OPA) ocean general circulation model of the Laboratoire
Three- and Four-Dimensional Variational Assimilation with a General Circulation Model of the Tropical Pacific Ocean. Part I: Formulation, Internal Diagnostics, and Consistency Checks
Abstract Three- and four-dimensional variational assimilation (3DVAR and 4DVAR) systems have been developed for the Ocean Parallelise (OPA) ocean general circulation model (OGCM) of the Laboratoire
A Global Oceanic Data Assimilation System
Abstract A global oceanic four-dimensional data assimilation system has been developed for use in initializing coupled ocean–atmosphere general circulation models and many other applications. The
Using satellite-derived sea level and temperature profiles for determining the salinity variability. A new approach
We propose a new approach to estimate the vertical variability of the salinity field. The method is based on combined vertical modes of temperature T and salinity S and reconstructs salinity profiles
The Effect of Salinity on Tropical Ocean Models
Abstract The effect of horizontal salinity gradients on the tropical ocean circulation has not previously been evaluated. It is shown that there are noticeable differences between the dynamic height
A modeling study of salinity variability and its effects in the tropical Pacific Ocean during the 1993–1999 period
[1] This paper investigates the mechanisms of near-surface salinity variability in the tropical Pacific during the 1993–1999 period, including the 1997–1998 El Nino. The role of salinity in the
...
1
2
3
4
...