Variability of the tropical Atlantic in 1986-1987 as observed by Geosat and in situ data

Launched in March 1985, the US Navy altimetric satellite GEOSAT gives the opportunity to the oceanographers to study the sea level variations with a high spatial and temporal resolution. We used 18 cycles of GEOSAT data from November 1986 until August 1987 to obtain the sea level variability in the Tropical Atlantic first results are in genet with those obtained through historical hydrographic data and evidence an interannual event concerning the equatorial upwelling which seems to be also present in simultaneous in situ data. (Résumé d'auteur