Absolute geostrophic velocity 1/8°


Ssalto/Duacs multimission gridded geostrophic velocities anomalies deduced from the Absolute Dynamic Topography with the method of Arbic et al., 2012 outside [-5°;5°] in latitude and of Lagerloef et al., 1999 in the tropical zone.

Arbic B. K, R. B. Scott, D. B. Chelton, J. G. Richman and J. F. Shriver, 2012, Effects on stencil width on surface ocean geostrophic velocity and vorticity estimation from gridded satellite altimeter data, J. Geophys. Res., vol117, C03029, doi:10.1029/2011JC007367

Lagerloef, G.S.E., G.Mitchum, R.Lukas and P.Niiler, 1999: Tropical Pacific near-surface currents estimated from altimeter, wind and drifter data, J. Geophys. Res., 104, 23,313-23,326.

Use : Ssalto/Duacs gridded products are devoted to scientific applications: study of general circulation (ocean gyres, …), including operational oceanography (near-real time products).

Ssalto/Duacs User Handbook : (M)SLA and (M)ADT Near-Real Time and Delayed Time Products

Absolute geostrophic velocity; meridional component
Absolute geostrophic velocity; zonal component

Temporal coverage   
1993-01-01 / today

Geographical coverage
Latitude = -90/90; Longitude = -180/180

Vertical coverage

Spatial resolution
1/8 degree

Update frequency


Data access
NRT (last month, without any restart of the server)