VANIMEDAT project : Decadal and interdecadal sea-level variability in the Mediterranean sea and northeastern Atlantic ocean. A. Pascual 1 , M. Marcos 2 , S. Ruiz 1 , D. Gomis 1 , S. Monserrat 1 , E. Alvarez 3 , B. Pérez 3 , M. G. Sotillo 3 , G. Larnicol 4 , M. N. Tsimplis 2
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Decadal and interdecadal sea-level variability in the Mediterranean sea and northeastern Atlantic ocean
A. Pascual1, M. Marcos2, S. Ruiz1, D. Gomis1, S. Monserrat1, E. Alvarez3, B. Pérez3, M. G. Sotillo3, G. Larnicol4, M. N. Tsimplis2
e-mail: [email protected]
1 IMEDEA (CSIC-UIB), Balears, SPAIN,
2 NOC, National Oceanographic Center, Southampton, UK
3 Puertos del Estado, Madrid, SPAIN
4 CLS Space Oceanography Division, Toulouse, FRANCE
1. Objectives of VANIMEDAT project
3. Preliminary results
Study of decadal and interdecadal sea-level variability in the seas surrounding the Iberian peninsula. (Project funded by the Spanish Ministry of Science and Education)
a) Characterization of the spatial and temporal sea-level variability.
b) Quantification, at a regional scale, of the different mechanisms that drive sea-level variability.
c) Estimation of ocean mass increase.
MODEL INTERCOMPARISON (1993-2001)
Barotropic sea level variance from each model.
TIDE GAUGE VARIANCE REDUCTION (1993-2001)
2. Data and models
Ratio of variance reduction at tide gauges
([Var(TG-IB)-Var(TG-model)]/Var(TG-IB), in %, for all frequencies (left), LF (>20 days, centre) and HF (<20 days, right).
(IB/MOG2D/HAMSOM) is applied.
TIDE GAUGES VS ALTIMETRY (1993-2001)
(Top) Position of gauges (hourly data) used for the comparison with altimetry.
Left: Dubrovnik tide gauge (blue) and altimetry (red) time series corrected by HAMSOM (top) and MOG2D (bottom). Right: Ratio of variance reduction of the differences between altimetry and tide gauge
SEA LEVEL TRENDS FROM ALTIMETRY
Barotropic sea level models:HAMSOM
to be run in the framework of VANIMEDAT project.
mean = 5.63 mm/yr mean = 2.90 mm/yr
mean = 5.39 mm/yr mean = 5.48 mm/yr
4. Ongoing and future work
Configuration of the barotropic models.