Publication Date:
2017-04-04
Description:
In this paper results from the application of an ocean data assimilation (ODA) system, combining a
multivariate reduced-order optimal interpolator (OI) scheme with a global ocean general circulation model
(OGCM), are described. The present ODA system, designed to assimilate in situ temperature and salinity
observations, has been used to produce ocean reanalyses for the 1962–2001 period. The impact of assimilating
observed hydrographic data on the ocean mean state and temporal variability is evaluated. A special
focus of this work is on the ODA system skill in reproducing a realistic ocean salinity state. Results from
a hierarchy of different salinity reanalyses, using varying combinations of assimilated data and background
error covariance structures, are described. The impact of the space and time resolution of the background
error covariance parameterization on salinity is addressed.
Description:
This work
has been funded by the ENACT Project (Contract
EVK2-CT2001-00117) for A. Bellucci and P. Di Pietro,
and partially by the ENSEMBLES Project (Contract
GOCE-CT-2003-505539) for A. Bellucci.
Description:
Published
Description:
3785-3807
Description:
3.7. Dinamica del clima e dell'oceano
Description:
JCR Journal
Description:
reserved
Keywords:
ocean modelling
;
data assimilation
;
reanalysis
;
upper ocean variability
;
temperature
;
Salinity
;
03. Hydrosphere::03.01. General::03.01.04. Ocean data assimilation and reanalysis
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
