We present a first result for the global mean geostrophic currents derived from a merged solution of altimetric satellites (T/P, Jason 1/2, ERS-1/2, GEOSAT) and the geoid estimated from the first 61-day cycle of the GOCE mission. This result is compared with that obtained based on a GRACE-induced mean geoid, as well as with mean circulation patterns estimated from ocean in-situ data from drifters and from model simulated data by the Global Circulation Model ECCO. The results show that with only one cycle (the first release)of GOCE data, the resolution of the geostrophic currents from a satellite only Mean Dynamic Topography (MDT) is remarkably improved, reaching amplitudes much closer to in-situ data than those coming from a GRACE-induced MDT, and from ECCO model.
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